Baseline visit v2 schema (r2)

duolingo.com

https://www.duolingo.com/

Aug 14, 2026, 7:05 PM UTC

complete; recorded by the scanner

View site historyScan this site againReport an evidence problem

Comparison Reportv2 schema (r2)

duolingo.com

https://www.duolingo.com/
SharePDF + evidence

What this actually means

duolingo.com contacted catalogued Google and Meta domains during this visit.

3 distinct catalogued tracking-service entities recorded responses across 18 cross-site domains. A catalog match identifies the service domain, not why the request occurred or what it carried. It also looks like keyboard-input listeners were registered through a call chain that included a cross-site script.

3tracking-service entities
137cross-site requests
1third-party cookie record
Observed in two automated visits: evidence to check, not a verdict.
Post on X

Plain-Language Findings

What this visit means

Unfamiliar terms are defined in the glossary
playwright-chromium

Worth checking

Bottom line: this visit has review-worthy signals

The scan observed signals a non-expert should not have to decode from raw request tables.

The cards below translate the evidence into plain language; severity reflects fixed reference thresholds, not measured population percentiles. The request log, domain table, and methodology remain below for verification.

152 requests observed in one controlled visit.

Worth checking

29 of 149 requests the engine evaluated matched Brave Shields filter lists

29 requests matched the default filter lists of Brave Shields, the ad and tracker blocker built into the Brave browser, while loading normally.

Computed with Brave's own ad-block engine and default filter lists in classification mode: matched requests were not blocked by the scanner and remain in this report's observed request counts. Matching shows what Shields would target on this visit's traffic; an actual Shields visit blocks these and also prevents their follow-on requests, so this number is neither a measured block count nor the total effect.

The hand-curated service catalog separately matched 16 request rows in this visit.Show matched requests

Context

This GPC comparison supports no comparable delta

The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.

The raw request logs of both visits remain below for transparency, but the diff between them supports no claim about what the compared condition changed.

1 disqualifying condition named by the report's claim policy.

Worth checking

Consent tooling and requests to tracking-service entities appeared before any choice

duolingo.com sent a request to OneTrust, a consent management platform (the tooling that shows cookie banners), and the request log included 3 distinct catalogued tracking-related services before the scanner made any consent choice; 3 companies answered.

A request to the platform's loader proves the page attempted to fetch consent tooling; an observed response supports delivery, but neither fact proves a banner was visibly shown to this scanner. Banner display can vary by region and visit context. The scanner never clicks a banner in this mode, so this report records requests made before the scanner made a consent choice. It does not determine whether any request required consent or whether the site's behavior complied with applicable law. More tracking-service entities or requests may appear after "Accept" than this report captures, so the counts here are lower bounds for users who consent.

Consent platform detected via a request to cdn.cookielaw.org.

Context

Tracking companies the privacy policy does not appear to name

Media.net was sent requests during this visit, but the policy text matched none of the names this scan knows that company by.

Policies often disclose vendor categories rather than company names, so an unnamed vendor is a transparency gap worth reviewing, not automatically a violation. Named in the policy: Google and Meta.

Policy at https://www.duolingo.com/privacy; 0 checkable statements matched; 2 of 3 observed tracking companies named in the policy.

Worth checking

Catalogued service domains recorded responses during this visit

Google, Meta and Media.net appeared in the request log.

A catalog match identifies a maintainer-reviewed service/domain mapping; it does not establish why an individual request occurred, what it carried, or whether profiling happened. Functional catalog labels include analytics / tag management, advertising and social / advertising pixel. This scan could not identify 4 of the 18 third-party hosts recorded here, so it cannot say who operates them. That is a limit of identity coverage, not evidence about the site.

137 cross-site requests across 18 third-party hosts.Modest distinct tracking-service entities count.Show third-party requests

Context

Requests were dispatched to catalogued major-platform domains

This visit dispatched requests to catalogued domains for Google and Meta.

The domain matches identify services, not the requests' purpose, payload, or whether any profile linking occurred.

15 requests to these platforms.Show catalog-matched requests

Nothing observed

Google Analytics present, no remarketing signal

Google Analytics was observed, but no DoubleClick remarketing sync appeared in this visit.

Standard analytics collection was observed, without the stats.g.doubleclick.net advertising sync.

Google Analytics host observed; no stats.g.doubleclick.net request.Show catalog-matched requests

Context

Third-party cookies were present

1 third-party cookie showed up during the visit.

The scanner observed cookie metadata whose domain crossed the scanned site's registrable-domain boundary. This report does not retain cookie values or partition keys, so it does not establish whether a cookie was a persistent identifier or could recognize a visitor across sites.

17 cookies total in this report.Modest third-party cookies count.

Context

Input-monitoring signal involving a third-party script

Listener coverage that could observe typing-related input events was registered through call chains that included a third-party script.

This is a behavioral instrumentation signal from listener registration, stack-attributed script origins, and known-vendor requests: it shows the page was instrumented to observe interaction, not that anything was transmitted. Stack attribution records the script origins present in the bounded registration call chain; a cross-site origin in that chain does not by itself establish that the cross-site script registered the listener, because first-party code can register its own listeners through a helper served from elsewhere. A different registrable domain is also not by itself a different operator: sites commonly serve their own scripts from a separate asset domain, so the card says third party only when the catalog or reviewed ownership attributes an origin to another organization. On scanners that run the active keystroke-capture probe, actual transmission is tested separately (a synthetic value is typed, never real input, and no typed values are collected); treat this card as a review prompt rather than proof.

100 interaction-listener registrations with https://*.tupsrv.com/, https://cdn.cookielaw.org/ and https://*.facebook.net/, plus 3 others in the registration call chain and 36 input-listener registrations with https://*.tupsrv.com/, https://cdn.cookielaw.org/ and https://d35aaqx5ub95lt.cloudfront.net/, plus 2 others in the registration call chain

Nothing observed

No fingerprint-like API calls observed

The scan did not observe the instrumented high-entropy browser APIs.

This is an observation layer, not proof that fingerprinting is impossible.

0 API families recorded.

GPC Comparison

GPC off and GPC on: two visits, no comparable metric delta

GPC off: 10,645msGPC on: 10,668ms
No metric deltas are comparable across these two visits, so none are shown.
  • Request, cookie, and storage deltas (each visit's own evidence still renders below): The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.
  • Catalog-matched request and entity deltas (each visit's own evidence still renders below): The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.
  • Other detector and causal-path deltas (each visit's own evidence still renders below): The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.
  • The Shields-number delta (each visit's own evidence still renders below): The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.
  • Fingerprinting deltas (each visit's own evidence still renders below): At least one visit did not complete the fingerprint measurement, so no exact cross-visit delta is shown.
  • Ad-pixel deltas (each visit's own evidence still renders below): At least one visit did not complete the pixel measurement, so no exact cross-visit delta is shown.

Measurement limits

4 conditions affect how this evidence reads

Both visits

  • Each visit in this report is one automated, headless Chromium visit from a fixed en-US / UTC profile, with no scrolling, clicking, or consent interaction. Sites can behave differently for real users, browsers, regions, accounts, or network locations.
  • Counts are a lower bound: trackers that load only after interaction or consent are not observed; Service Workers are blocked, and Web Worker or WebSocket traffic may be incomplete. Service labels use a US-biased hand-curated catalog, so regional services may be under-labeled. Cookie and storage figures are an end-of-visit snapshot, with storage keys read from the top frame only.
  • The page did not reach network idle before the scan window ended.
  • Read the site's privacy policy (https://www.duolingo.com/privacy) and compared its text against this visit's observed behavior. Policy checks are an automated text match with the matched sentences quoted, not a legal reading.

How to use this report

Read the findings and measurement limits first, then inspect the evidence for each recorded visit. Comparisons include both visits, even where a difference cannot be interpreted.

Keep this PDF with its evidence package: the source JSON, correction context, export receipt and SHA256SUMS. The package preserves source bytes and the correction context at export time. Hashes check file consistency; they do not establish independent measurement accuracy or a signed attestation.

Correction context SHA-256: 1a6acc2ad1147c0255b04d14d2748f411159a9516f818959dd3054be53ed216c

Renderer revision: 3c18992e02534f33c825f7c2e51dd534d3ccab0d

GPC off — evidence

2026-08-14T19:05:57.879Z · complete; recorded by the scanner

Retained observations from this visit. Missing measurements do not establish absence of activity.

Request attribution map

Which actor each third-party request is attributed to, from the initiator the browser reported. Attribution, not causation: an initiator may itself have been told what to fetch, and requests with no reported initiator are not distinguished from ones fetched from several. Asterisks mark subdomain labels hidden for privacy.
Attributed requests
134
Not attributable
3
Third-party requests
137

No unique actor could be assigned to 3 of these requests. That includes requests for which the browser reported no usable initiator, and repeated URLs seen with conflicting initiators. This report does not distinguish those causes, so they are counted together rather than drawn.

137 third-party requests: 134 attributed to a single recorded actor, 3 not attributable.

Select a relationship to see its detail and open the rows behind it.

Showing the 12 highest-volume attribution paths of 25 recorded paths. The per-domain counts above cover only the paths drawn here; open the report JSON for the full set.

By the numbers

Recorded counts and evidence availability from this one visit. The findings above interpret them.
Requests152137 third-party
Matched Shields lists29verified over 149 requests the engine evaluated
Third-party domains183 distinct catalogued service entities
Cookies171 third-party
Storage keys55 keys privacy-filtered; values omitted
Fingerprint API calls00 API families
Interaction listenersInputthird-party listener coverage; transmission tested separately
GPC signalVerified offheader and JavaScript readback agreed
Duration10.6s7:05:57 PM UTC

Request composition & timeline

First-party requests 15
Other third-party requests 121
Catalog-matched third-party requests 16

152 requests were recorded from 57 ms to 2,210 ms. Open the request log for exact timing and request details.

0 ms2,210 ms

Recorded visit structure

Visit phases & state changes

3 phases

Request counts are retained request rows whose start fell in each phase. A phase with no retained rows does not prove that no traffic occurred; some phase traffic can be intentionally excluded from the public request log.

PhaseSpan from run startRecorded requestsThird-partyCatalog-matched requestsCookie recordsStorage records
Initial page loadP0 · passive-load0 to 9,053 ms (9,053 ms)1521371617 present5 present
Active input probeP1 · active-probe9,053 to 9,110 ms (57 ms)No retained rowsNo retained rowsNo retained rows0 retained0 retained
Privacy-policy analysisP2 · policy-analysis9,191 to 10,645 ms (1,454 ms)No retained rowsNo retained rowsNo retained rows0 retained0 retained

Cookie & storage snapshot ledger

22 change records

Changes are inferred from privacy-filtered snapshots at phase boundaries, not instrumented browser write events. Cookie values are never recorded; storage values are omitted and only byte counts remain.

  1. P0 · Initial page loadPresent at first snapshot
    test_cookieThird-party cookie · persistent
  2. P0 · Initial page loadPresent at first snapshot
    Cookie 2 · name hidden for privacyFirst-party cookie · persistent
  3. P0 · Initial page loadPresent at first snapshot
    Cookie 3 · name hidden for privacyFirst-party cookie · persistent
  4. P0 · Initial page loadPresent at first snapshot
    Cookie 4 · name hidden for privacyFirst-party cookie · persistent
  5. P0 · Initial page loadPresent at first snapshot
    Cookie 5 · name hidden for privacyFirst-party cookie · persistent
  6. P0 · Initial page loadPresent at first snapshot
    Cookie 6 · name hidden for privacyFirst-party cookie · persistent
  7. P0 · Initial page loadPresent at first snapshot
    Cookie 7 · name hidden for privacyFirst-party cookie · persistent
  8. P0 · Initial page loadPresent at first snapshot
    Cookie 8 · name hidden for privacyFirst-party cookie · persistent
  9. P0 · Initial page loadPresent at first snapshot
    OptanonConsentFirst-party cookie · persistent
  10. P0 · Initial page loadPresent at first snapshot
    Cookie 10 · name hidden for privacyFirst-party cookie · persistent
  11. P0 · Initial page loadPresent at first snapshot
    _gcl_auFirst-party cookie · persistent
  12. P0 · Initial page loadPresent at first snapshot
    _gaFirst-party cookie · persistent
  13. P0 · Initial page loadPresent at first snapshot
    _gidFirst-party cookie · persistent
  14. P0 · Initial page loadPresent at first snapshot
    Cookie 14 · name hidden for privacyFirst-party cookie · persistent
  15. P0 · Initial page loadPresent at first snapshot
    _fbpFirst-party cookie · persistent
  16. P0 · Initial page loadPresent at first snapshot
    Cookie 16 · name hidden for privacyFirst-party cookie · session
  17. P0 · Initial page loadPresent at first snapshot
    Cookie 17 · name hidden for privacyFirst-party cookie · persistent
  18. P0 · Initial page loadPresent at first snapshot
    Storage key 1 · name hidden for privacylocalStorage · observed size 5 bytes
  19. P0 · Initial page loadPresent at first snapshot
    Storage key 2 · name hidden for privacylocalStorage · observed size 277 bytes
  20. P0 · Initial page loadPresent at first snapshot
    Storage key 3 · name hidden for privacylocalStorage · observed size 13 bytes
  21. P0 · Initial page loadPresent at first snapshot
    Storage key 4 · name hidden for privacylocalStorage · observed size 2,362 bytes
  22. P0 · Initial page loadPresent at first snapshot
    Storage key 5 · name hidden for privacysessionStorage · observed size 10 bytes

16 change records hide unreviewed names or keys because they can contain identifiers.

Domain evidence

20 recorded domains
DomainRoleRequestsCatalog matchResource types
www.googletagmanager.comservice5Google: analytics / tag managementscript, image
*.*.doubleclick.netservice3Google: advertisingping, script, fetch
www.google-analytics.comservice2Google: analytics / tag managementscript, xhr
*.facebook.netservice2Meta: social / advertising pixelscript
analytics.google.comservice1Google: analytics / tag managementfetch
ad.doubleclick.netservice1Google: advertisingfetch
www.googleadservices.comservice1Google: advertisingfetch
*.media.netservice1Media.net: advertisingimage
d35aaqx5ub95lt.cloudfront.netthird-party96No catalog matchscript, stylesheet, font, fetch, image
cdn.cookielaw.orgthird-party6No catalog matchscript, xhr, fetch
www.gstatic.comthird-party5No catalog matchscript, stylesheet, image, other
www.recaptcha.netthird-party3No catalog matchscript, document
*.tupsrv.comthird-party3No catalog matchscript, image
www.google.comthird-party3No catalog matchfetch, image
accounts.google.comthird-party2No catalog matchscript, stylesheet
*.onetrust.comthird-party1No catalog matchxhr
analytics.tupsrv.comthird-party1No catalog matchscript
*.gstatic.comthird-party1No catalog matchfont
*.duolingo.comfirst-party9No catalog matchfetch, xhr
www.duolingo.comfirst-party6No catalog matchdocument, fetch

Request log

152 recorded requests

In hosts and URLs, * and … mark details hidden for privacy.

Request references name this visit's retained JSON rows in order (B = baseline, V = variant, S = single). R0001 is the first request row.

RefTimePhaseStatusTypeDomainProvenanceURL
B:R000157msP0200documentwww.duolingo.comNot attributedhttps://www.duolingo.com/
B:R0002410msP0200scriptcdn.cookielaw.orginitiated by www.duolingo.comhttps://cdn.cookielaw.org/…
B:R0003411msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0004411msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0005411msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0006532msP0200xhrcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
B:R0007533msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0008534msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0009534msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0010535msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0011535msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0012535msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0013535msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0014536msP0200scriptwww.recaptcha.netinitiated by www.duolingo.comhttps://www.recaptcha.net/…?…
B:R0015592msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0016592msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0017667msP0200xhr*.onetrust.cominitiated by cdn.cookielaw.orghttps://*.onetrust.com/…
B:R0018967msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0019968msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0020969msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0021969msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0022969msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0023970msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0024970msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0025970msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0026970msP0200scriptwww.googletagmanager.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.googletagmanager.com/…?id
B:R0027972msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0028972msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0029973msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0030973msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0031974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0032974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0033974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0034974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0035974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0036974msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0037975msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0038975msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0039975msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0040975msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0041975msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0042975msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0043975msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0044975msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0045975msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0046975msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0047979msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0048979msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0049980msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0050980msP0200scriptaccounts.google.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://accounts.google.com/…
B:R0051980msP0404fetch*.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://*.duolingo.com/…
B:R0052980msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
B:R0053980msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
B:R0054981msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R0055981msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0056981msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0057981msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0058981msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0059982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0060982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0061982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0062982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0063982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0064982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0065982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0066982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0067982msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0068983msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0069983msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0070983msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0071983msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0072984msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0073984msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0074985msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0075985msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0076985msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0077986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0078986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0079986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0080986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0081986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0082986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0083986msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0084987msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0085987msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0086987msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0087987msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0088991msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0089992msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0090992msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0091993msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0092993msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0093993msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0094993msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0095994msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0096994msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0097994msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0098994msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0099995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0100995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0101995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0102995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0103995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0104995msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0105996msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0106996msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R0107996msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R0108996msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R0109996msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/api/…
B:R0110996msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R0111996msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R0112996msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R01131,000msP0404fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
B:R01141,003msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R01151,003msP0404fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
B:R01161,003msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
B:R01171,009msP0200scriptcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
B:R01181,012msP0200scriptwww.gstatic.comNot attributedhttps://www.gstatic.com/…
B:R01191,408msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
B:R01201,471msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
B:R01211,472msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
B:R01221,481msP0200scriptwww.googletagmanager.cominitiated by www.googletagmanager.comhttps://www.googletagmanager.com/…?id&…
B:R01231,482msP0200scriptwww.googletagmanager.cominitiated by www.googletagmanager.comhttps://www.googletagmanager.com/…?id&…
B:R01241,483msP0200scriptwww.google-analytics.cominitiated by www.googletagmanager.comhttps://www.google-analytics.com/…
B:R01251,483msP0200script*.facebook.netinitiated by www.googletagmanager.comhttps://*.facebook.net/…
B:R01261,483msP0200script*.tupsrv.cominitiated by www.googletagmanager.comhttps://*.tupsrv.com/…?…
B:R01271,539msP0200documentwww.recaptcha.netinitiated by www.gstatic.comhttps://www.recaptcha.net/…?…&hl&v&size&cb
B:R01281,570msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
B:R01291,641msP0204fetchanalytics.google.cominitiated by www.googletagmanager.comhttps://analytics.google.com/…?v&tid&…&cid
B:R01301,641msP0204ping*.*.doubleclick.netinitiated by www.googletagmanager.comhttps://*.*.doubleclick.net/…?v&…&tid&cid
B:R01311,641msP0204imagewww.googletagmanager.cominitiated by www.duolingo.comhttps://www.googletagmanager.com/…?id&v&t&…
B:R01321,648msP0200stylesheetwww.gstatic.cominitiated by www.recaptcha.nethttps://www.gstatic.com/…
B:R01331,650msP0200scriptwww.gstatic.comNot attributedhttps://www.gstatic.com/…
B:R01341,711msP0200scriptwww.googletagmanager.cominitiated by www.googletagmanager.comhttps://www.googletagmanager.com/…?id&…
B:R01351,712msP0200script*.*.doubleclick.netinitiated by www.googletagmanager.comhttps://*.*.doubleclick.net/…?…
B:R01361,712msP0200fetchwww.google.cominitiated by www.googletagmanager.comhttps://www.google.com/…?…
B:R01371,712msP0200fetchwww.google.cominitiated by www.googletagmanager.comhttps://www.google.com/…?…&tid
B:R01381,712msP0204fetchad.doubleclick.netinitiated by www.googletagmanager.comhttps://ad.doubleclick.net/…?…
B:R01391,735msP0200xhrwww.google-analytics.cominitiated by www.google-analytics.comhttps://www.google-analytics.com/…?v&…&t&cid&tid
B:R01401,780msP0200script*.facebook.netinitiated by *.facebook.nethttps://*.facebook.net/…?v&…
B:R01411,785msP0204scriptanalytics.tupsrv.cominitiated by *.tupsrv.comhttps://analytics.tupsrv.com/…?…
B:R01421,785msP0302image*.tupsrv.cominitiated by www.duolingo.comhttps://*.tupsrv.com/…?…
B:R01431,895msP0200fetchwww.googleadservices.cominitiated by www.googletagmanager.comhttps://www.googleadservices.com/…?…
B:R01441,896msP0302image*.media.netinitiated by www.duolingo.comhttps://*.media.net/…?…&type
B:R01451,900msP0200imagewww.google.cominitiated by www.duolingo.comhttps://www.google.com/…?…&cid
B:R01462,005msP0200scriptwww.recaptcha.netinitiated by www.recaptcha.nethttps://www.recaptcha.net/…?hl&v
B:R01472,013msP0200imagewww.gstatic.cominitiated by www.gstatic.comhttps://www.gstatic.com/…
B:R01482,014msP0200font*.gstatic.cominitiated by www.recaptcha.nethttps://*.gstatic.com/…
B:R01492,054msP0200otherwww.gstatic.comNot attributedhttps://www.gstatic.com/…
B:R01502,119msP0204image*.tupsrv.cominitiated by www.duolingo.comhttps://*.tupsrv.com/…?…
B:R01512,132msP0n/afetch*.*.doubleclick.netinitiated by www.googletagmanager.comhttps://*.*.doubleclick.net/…?…
B:R01522,210msP0200stylesheetaccounts.google.cominitiated by accounts.google.comhttps://accounts.google.com/…

GPC on — evidence

2026-08-14T19:06:08.536Z · complete; recorded by the scanner

Retained observations from this visit. Missing measurements do not establish absence of activity.

Request attribution map

Which actor each third-party request is attributed to, from the initiator the browser reported. Attribution, not causation: an initiator may itself have been told what to fetch, and requests with no reported initiator are not distinguished from ones fetched from several. Asterisks mark subdomain labels hidden for privacy.
Attributed requests
113
Not attributable
3
Third-party requests
116

No unique actor could be assigned to 3 of these requests. That includes requests for which the browser reported no usable initiator, and repeated URLs seen with conflicting initiators. This report does not distinguish those causes, so they are counted together rather than drawn.

116 third-party requests: 113 attributed to a single recorded actor, 3 not attributable.

Select a relationship to see its detail and open the rows behind it.

Showing the 12 highest-volume attribution paths of 14 recorded paths. The per-domain counts above cover only the paths drawn here; open the report JSON for the full set.

By the numbers

Recorded counts and evidence availability from this one visit. The findings above interpret them.
Requests131116 third-party
Matched Shields lists11verified over 130 requests the engine evaluated
Third-party domains81 distinct catalogued service entity
Cookies100 third-party
Storage keys11 key privacy-filtered; values omitted
Fingerprint API calls00 API families
Interaction listenersInputthird-party listener coverage; transmission tested separately
GPC signalVerified onheader and JavaScript readback agreed
Duration10.7s7:06:08 PM UTC

Request composition & timeline

First-party requests 15
Other third-party requests 115
Catalog-matched third-party requests 1

131 requests were recorded from 82 ms to 2,096 ms. Open the request log for exact timing and request details.

0 ms2,096 ms

Recorded visit structure

Visit phases & state changes

3 phases

Request counts are retained request rows whose start fell in each phase. A phase with no retained rows does not prove that no traffic occurred; some phase traffic can be intentionally excluded from the public request log.

PhaseSpan from run startRecorded requestsThird-partyCatalog-matched requestsCookie recordsStorage records
Initial page loadP0 · passive-load0 to 9,082 ms (9,082 ms)131116110 present1 present
Active input probeP1 · active-probe9,082 to 9,136 ms (54 ms)No retained rowsNo retained rowsNo retained rows0 retained0 retained
Privacy-policy analysisP2 · policy-analysis9,219 to 10,668 ms (1,449 ms)No retained rowsNo retained rowsNo retained rows0 retained0 retained

Cookie & storage snapshot ledger

11 change records

Changes are inferred from privacy-filtered snapshots at phase boundaries, not instrumented browser write events. Cookie values are never recorded; storage values are omitted and only byte counts remain.

  1. P0 · Initial page loadPresent at first snapshot
    Cookie 1 · name hidden for privacyFirst-party cookie · persistent
  2. P0 · Initial page loadPresent at first snapshot
    Cookie 2 · name hidden for privacyFirst-party cookie · persistent
  3. P0 · Initial page loadPresent at first snapshot
    Cookie 3 · name hidden for privacyFirst-party cookie · persistent
  4. P0 · Initial page loadPresent at first snapshot
    Cookie 4 · name hidden for privacyFirst-party cookie · persistent
  5. P0 · Initial page loadPresent at first snapshot
    Cookie 5 · name hidden for privacyFirst-party cookie · persistent
  6. P0 · Initial page loadPresent at first snapshot
    Cookie 6 · name hidden for privacyFirst-party cookie · persistent
  7. P0 · Initial page loadPresent at first snapshot
    Cookie 7 · name hidden for privacyFirst-party cookie · persistent
  8. P0 · Initial page loadPresent at first snapshot
    OptanonConsentFirst-party cookie · persistent
  9. P0 · Initial page loadPresent at first snapshot
    Cookie 9 · name hidden for privacyFirst-party cookie · session
  10. P0 · Initial page loadPresent at first snapshot
    Cookie 10 · name hidden for privacyFirst-party cookie · persistent
  11. P0 · Initial page loadPresent at first snapshot
    Storage key 1 · name hidden for privacylocalStorage · observed size 2,362 bytes

10 change records hide unreviewed names or keys because they can contain identifiers.

Domain evidence

10 recorded domains
DomainRoleRequestsCatalog matchResource types
www.googletagmanager.comservice1Google: analytics / tag managementscript
d35aaqx5ub95lt.cloudfront.netthird-party96No catalog matchscript, stylesheet, font, fetch, image
cdn.cookielaw.orgthird-party7No catalog matchscript, xhr, fetch
www.gstatic.comthird-party5No catalog matchscript, stylesheet, image, other
www.recaptcha.netthird-party3No catalog matchscript, document
accounts.google.comthird-party2No catalog matchscript, stylesheet
*.onetrust.comthird-party1No catalog matchxhr
*.gstatic.comthird-party1No catalog matchfont
*.duolingo.comfirst-party9No catalog matchfetch, xhr
www.duolingo.comfirst-party6No catalog matchdocument, fetch

Request log

131 recorded requests

In hosts and URLs, * and … mark details hidden for privacy.

Request references name this visit's retained JSON rows in order (B = baseline, V = variant, S = single). R0001 is the first request row.

RefTimePhaseStatusTypeDomainProvenanceURL
V:R000182msP0200documentwww.duolingo.comNot attributedhttps://www.duolingo.com/
V:R0002455msP0200scriptcdn.cookielaw.orginitiated by www.duolingo.comhttps://cdn.cookielaw.org/…
V:R0003456msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0004456msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0005456msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0006583msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0007592msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0008595msP0200xhrcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
V:R0009598msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0010599msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0011599msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0012599msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0013600msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0014600msP0200scriptwww.recaptcha.netinitiated by www.duolingo.comhttps://www.recaptcha.net/…?…
V:R0015602msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0016602msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R0017719msP0200xhr*.onetrust.cominitiated by cdn.cookielaw.orghttps://*.onetrust.com/…
V:R00181,004msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00191,005msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00201,006msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00211,006msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00221,006msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00231,007msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00241,009msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00251,009msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00261,009msP0200scriptwww.googletagmanager.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.googletagmanager.com/…?id
V:R00271,010msP0200fontd35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00281,010msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00291,010msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00301,010msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00311,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00321,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00331,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00341,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00351,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00361,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00371,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00381,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00391,011msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00401,012msP0200fetchd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00411,012msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00421,012msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00431,012msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00441,015msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00451,015msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00461,015msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00471,016msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00481,016msP0200stylesheetd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00491,016msP0200scriptd35aaqx5ub95lt.cloudfront.netinitiated by d35aaqx5ub95lt.cloudfront.nethttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00501,016msP0200scriptaccounts.google.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://accounts.google.com/…
V:R00511,017msP0404fetch*.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://*.duolingo.com/…
V:R00521,017msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
V:R00531,017msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
V:R00541,017msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R00551,017msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00561,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00571,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00581,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00591,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00601,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00611,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00621,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00631,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00641,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00651,018msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00661,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00671,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00681,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00691,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00701,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00711,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00721,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00731,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00741,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00751,019msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00761,020msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00771,026msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00781,027msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00791,028msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00801,028msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00811,028msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00821,028msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00831,029msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00841,029msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00851,029msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00861,029msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00871,029msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00881,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00891,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00901,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00911,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00921,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00931,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00941,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00951,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00961,030msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00971,031msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00981,031msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R00991,031msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01001,031msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01011,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01021,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01031,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01041,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01051,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01061,032msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01071,033msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01081,033msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01091,033msP0200fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/api/…
V:R01101,033msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01111,033msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01121,033msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01131,038msP0404fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
V:R01141,039msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01151,042msP0404fetchwww.duolingo.cominitiated by d35aaqx5ub95lt.cloudfront.nethttps://www.duolingo.com/…
V:R01161,043msP0200imaged35aaqx5ub95lt.cloudfront.netinitiated by www.duolingo.comhttps://d35aaqx5ub95lt.cloudfront.net/…
V:R01171,045msP0200scriptcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
V:R01181,049msP0200scriptwww.gstatic.comNot attributedhttps://www.gstatic.com/…
V:R01191,429msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
V:R01201,489msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
V:R01211,490msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…
V:R01221,545msP0200documentwww.recaptcha.netinitiated by www.gstatic.comhttps://www.recaptcha.net/…?…&hl&v&size&cb
V:R01231,569msP0200fetchcdn.cookielaw.orginitiated by cdn.cookielaw.orghttps://cdn.cookielaw.org/…/static/…
V:R01241,570msP0200xhr*.duolingo.comNot attributedhttps://*.duolingo.com/…
V:R01251,608msP0200stylesheetwww.gstatic.cominitiated by www.recaptcha.nethttps://www.gstatic.com/…
V:R01261,609msP0200scriptwww.gstatic.comNot attributedhttps://www.gstatic.com/…
V:R01271,947msP0200scriptwww.recaptcha.netinitiated by www.recaptcha.nethttps://www.recaptcha.net/…?hl&v
V:R01281,956msP0200imagewww.gstatic.cominitiated by www.gstatic.comhttps://www.gstatic.com/…
V:R01291,956msP0200font*.gstatic.cominitiated by www.recaptcha.nethttps://*.gstatic.com/…
V:R01302,087msP0200otherwww.gstatic.comNot attributedhttps://www.gstatic.com/…
V:R01312,096msP0200stylesheetaccounts.google.cominitiated by accounts.google.comhttps://accounts.google.com/…

This versioned report is currently retained in the public corpus. Follow the currently retained site history, repeat the same public route when it is available, or request a transparent evidence correction.

Integrity and provenance

Evidence receipt

Open report JSONOpen provenance sidecarPrintable versionDownload PDF + evidenceOpen PDF
Report ID
20260814-d5e38e47a350161570ecba7b69d6f777
Site
duolingo.com
Latest visit
Schema
v2 schema (r2)
Verify recorded provenance

Baseline visit

Started
Run quality
complete; recorded by the scanner
Scanner
playwright-chromium
Browser
151.0.7922.34
Redaction
version 4
Methodology
shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2+phase-kernel-v2+boundary-state-v1+consent-r2-v4+resource-budget-v1+proxy-traffic-v1+service-worker-block-v1+detector-accountability-v1+service-role-taxonomy-v1
Detector registry
node-detectors-v4100de91713270067dff4f5ecebeea61d330982c7a5aa33395bae3dd604adedd2
Tracker catalog digest
e94970de235fc80254de8ed99b94316a252e52aa1c2e748c8fbfc3c093b908f4
Brave-list instrument
engine adblock-rust-0.13.20f52cc524a8999a1022279aca74003ece9720f267bc678430727b7312d43f0ac
Normalization
redaction-v4+allowlists-v3:269f631f04090ce582644ee3cf0e5c5b6bb425dc4929bc283607b808bc9322a9+public-string-policy-v3:6c78c05523e1f16c88264d0144af33587bd6dc11e04d337a6af2d58190639266+tldts@7.4.10+node-evidence-policy-v1+r2-http-status-compat-v1

Variant visit

Started
Run quality
complete; recorded by the scanner
Scanner
playwright-chromium
Browser
151.0.7922.34
Redaction
version 4
Methodology
shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2+phase-kernel-v2+boundary-state-v1+consent-r2-v4+resource-budget-v1+proxy-traffic-v1+service-worker-block-v1+detector-accountability-v1+service-role-taxonomy-v1
Detector registry
node-detectors-v4100de91713270067dff4f5ecebeea61d330982c7a5aa33395bae3dd604adedd2
Tracker catalog digest
e94970de235fc80254de8ed99b94316a252e52aa1c2e748c8fbfc3c093b908f4
Brave-list instrument
engine adblock-rust-0.13.20f52cc524a8999a1022279aca74003ece9720f267bc678430727b7312d43f0ac
Normalization
redaction-v4+allowlists-v3:269f631f04090ce582644ee3cf0e5c5b6bb425dc4929bc283607b808bc9322a9+public-string-policy-v3:6c78c05523e1f16c88264d0144af33587bd6dc11e04d337a6af2d58190639266+tldts@7.4.10+node-evidence-policy-v1+r2-http-status-compat-v1

Recorded provenance is self-reported measurement metadata, not a cryptographic attestation. The public versioned report JSON contains the retained public evidence; see the methodology for interpretation and retention limits.

This report covers what the scanner measures, not everything a site can do. 16 browser surfaces are not instrumented at all (Every page except the one that was scanned; Anything that only loads after scrolling or interaction; Why a request happened, as a causal chain; and 13 others), 3 capabilities are declined by policy, and 3 are outside what any single visit can see. Their absence from this report is not evidence that they did not occur. Read the published coverage boundary.

Detector accuracy is unmeasured. No calibration study currently publishes a precision or recall for the detectors on this page, so a detector match here is a recorded observation, not a calibrated classification. How detector accuracy is measured.

Approved use boundary: This report is investigative evidence that requires independent corroboration. It is not a standalone legal determination and not the sole exhibit in a legal proceeding. Recorded in this project's release manifest on .

Reports record one automated visit per condition; visits may be incomplete. Results describe these visits, not everything a site can do.