Site Behavior LabSee what a site does, not just what it says.

Curated public corpus · Site history

duolingo.com

duolingo.com recorded 26 fewer third-party requests in the visit configured for Brave-list blocking.

This timeline contains reviewed reports published into the curated public corpus. A live rescan remains a standalone share report until a later corpus publication includes it.

Latest controlled visit

duolingo.com recorded 26 fewer third-party requests in the visit configured for Brave-list blocking.

Brave-list blocking comparison · Aug 17, 2026 · desktop

Third-party requests
135
Third-party tracking-service requests
15
Third-party cookies
2

Comparable visits

Observed differences across comparable visits

  • Aug 17, 2026no change in third-party requests, no change in third-party tracking-service requests compared with Aug 10, 2026
  • Jul 21, 2026no change in third-party requests, no change in third-party tracking-service requests compared with Jul 21, 2026
  • Jul 6, 2026-2 third-party requests, no change in third-party tracking-service requests compared with Jun 25, 2026

This v1 history holds the route, scanner method, browser, device, conditions, catalog, Brave-list source and list count constant. It does not hold the filter-list snapshot date constant: a changed snapshot can support raw and catalogued-service differences, but never a Shields or detector delta, so a difference here is not evidence that blocking behaviour changed. Differences can still reflect site experiments, ad rotation, caching or bot detection.

Evidence timeline

10 reports

Third-party requests in successful, complete passive visits, oldest to newest. The full mixed evidence timeline remains below.

The trend line covers this site's 3 most recent reports from one measurement cohort. 6 other reports were measured under different methodology generations, different schema revisions and different producers, plus 2 others, so they are listed below rather than joined to one line.

  1. Aug 17, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 26 fewer third-party requests in the visit configured for Brave-list blocking.135 third-party requests · 15 third-party tracking-service requests · schema 1
  2. Aug 14, 2026 · GPC comparison · desktopduolingo.com contacted catalogued Google and Meta domains during this visit.137 third-party requests · 16 third-party tracking-service requests · schema 2.r2
  3. Aug 10, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 26 fewer third-party requests in the visit configured for Brave-list blocking.135 third-party requests · 15 third-party tracking-service requests · schema 1
  4. Aug 7, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 26 fewer third-party requests in the visit configured for Brave-list blocking.135 third-party requests · 15 third-party tracking-service requests · schema 1
  5. Jul 27, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 27 fewer third-party requests in the visit configured for Brave-list blocking.136 third-party requests · 16 third-party tracking-service requests · schema 1
  6. Jul 21, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 7 fewer third-party requests in the visit configured for Brave-list blocking.116 third-party requests · 1 third-party tracking-service requests · schema 1
  7. Jul 21, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 7 fewer third-party requests in the visit configured for Brave-list blocking.116 third-party requests · 1 third-party tracking-service requests · schema 1
  8. Jul 6, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 11 fewer third-party requests in the visit configured for Brave-list blocking.124 third-party requests · 4 third-party tracking-service requests · schema 1
  9. Jul 2, 2026 · consent comparison attempt (no control activated) · desktopduolingo.com contacted catalogued Google domains during this visit.124 third-party requests · 4 third-party tracking-service requests · schema 1
  10. Jun 25, 2026 · Brave-list blocking comparison · desktopduolingo.com recorded 13 fewer third-party requests in the visit configured for Brave-list blocking.126 third-party requests · 4 third-party tracking-service requests · schema 1