Website evidence · pilot dataset
Does udemy.com fingerprint you?
No monitored fingerprinting signals observed in the latest measured scans.
No monitored signal family met its threshold in the latest measured scans. This limited visit does not establish that the site never fingerprints visitors. Earlier runs remain available below.
All 10 source records are included in the JSON. Scan timestamps and versions are shown as recorded. The tabs show the latest usable homepage measurement for each setup. Later failed attempts remain in the history. Scan scope and methodology ↗
Inside the scan
← All websitesVisitor setup
Not observed
0 of 5 signal families observed
- Measurement
- Measured · Partial load
- Page context
- Page document
- Scan time
- 2026-10-22T16:51:42.123990Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Captured titleUdemy: Online Courses for Skills, Careers & AI
CanvasDraws text and reads canvas output.
Observed requires a text-drawing API and a canvas readback API. Guide ↗
canvas.getContext1 callsFrame: https://www.udemy.com/
- Inline caller recorded
WebGLQueries the graphics environment.
Observed requires at least three distinct WebGL probing APIs. Guide ↗
No matching API call was captured.
AudioRenders or reads audio samples.
Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗
No matching API call was captured.
FontsMeasures text repeatedly.
Observed requires at least ten text-measurement calls. Guide ↗
No matching API call was captured.
DeviceReads browser and display properties.
Observed requires at least three distinct browser, screen, or window properties. Guide ↗
No matching API call was captured.
Providers, script signatures, and DNS 0 provider labels
Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.
No provider or DNS evidence in this record.
Network and worker observations 56 requests
- Captured scripts
- 5
- Instrumented frames
- 1
- Google Ads observed
- No
- Transmission evidence
- Not validated
Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.
Third-party hosts
cdn.cookielaw.orgcms-images.udemycdn.comfrontends.udemycdn.coms.udemycdn.comsnippet.maze.co
Source record and integrity
- Original source
results/headful/udemy-com-20261022T165142.json- Original file SHA-256
7aa370b80a7a0adb8cac4bd02e681f0f5d570d57cf587beb9c77e963ff925a62
Run ID: headful-7aa370b80a7a. The JSON contains sanitized observations, not the original private scan payload.
Other scan attempts (2)
Visitor setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-21T23:24:05.805063Z
- Browser / scanner
- 156.0.8078.4 / 0.3
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headful/udemy-com-20261021T232405.json- Original file SHA-256
38bab91f808a33df3201939691ec78c0a9c0297d3e0bfd6836c05ec74b47b5ba
Run ID: headful-38bab91f808a. The JSON contains sanitized observations, not the original private scan payload.
Visitor setup
Scanner error
Scanner error
- Measurement
- Scanner error
- Page context
- Page not measured
- Scan time
- 2026-10-22T16:51:41.364358Z
- Browser / scanner
- 156.0.8078.4 / 0.4
The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.
Source record and integrity
- Original source
results/headful/udemy-com-20261022T165141.json- Original file SHA-256
01b52371d050db0f6b6db808bd409fae1016acdf410dd4bf4453ad36b86b003a
Run ID: headful-01b52371d050. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Not observed
0 of 5 signal families observed
- Measurement
- Measured · Partial load
- Page context
- Page document
- Scan time
- 2026-10-23T01:13:43.769689Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Captured titleUdemy: Online Courses for Skills, Careers & AI
CanvasDraws text and reads canvas output.
Observed requires a text-drawing API and a canvas readback API. Guide ↗
canvas.getContext1 callsFrame: https://www.udemy.com/
- Inline caller recorded
WebGLQueries the graphics environment.
Observed requires at least three distinct WebGL probing APIs. Guide ↗
No matching API call was captured.
AudioRenders or reads audio samples.
Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗
No matching API call was captured.
FontsMeasures text repeatedly.
Observed requires at least ten text-measurement calls. Guide ↗
No matching API call was captured.
DeviceReads browser and display properties.
Observed requires at least three distinct browser, screen, or window properties. Guide ↗
No matching API call was captured.
Providers, script signatures, and DNS 0 provider labels
Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.
No provider or DNS evidence in this record.
Network and worker observations 48 requests
- Captured scripts
- 0
- Instrumented frames
- 1
- Google Ads observed
- No
- Transmission evidence
- Not validated
Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.
Third-party hosts
cdn.cookielaw.orgcms-images.udemycdn.comfrontends.udemycdn.coms.udemycdn.comsnippet.maze.co
Source record and integrity
- Original source
results/headless/udemy-com-20261023T011343.json- Original file SHA-256
a4cb2981aeabfbcb8ae805d20ad3947d4fc121ad612e5a9a5b2e41cad7ee887d
Run ID: research-a4cb2981aeab. The JSON contains sanitized observations, not the original private scan payload.
Other scan attempts (6)
Research setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-21T21:31:57.719334Z
- Browser / scanner
- 156.0.8078.4 / 0.3
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headless/udemy-com-20261021T213157.json- Original file SHA-256
7fffd1ce5092ba773b2582df6a0af068c72f22bb6da6fc536ff6c33dfd8d7193
Run ID: research-7fffd1ce5092. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-22T19:14:39.770690Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headless/udemy-com-20261022T191439.json- Original file SHA-256
6b93d71540e27a7ce5132b836392a554dc2d536aed6d6872e263e7f0b2258909
Run ID: research-6b93d71540e2. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-23T00:09:53.904267Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headless/udemy-com-20261023T000953.json- Original file SHA-256
5ac0d15961eec115bb448d60bc595b3febe6e3ee63aa1bdddf39f518ea745ac1
Run ID: research-5ac0d15961ee. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-23T00:33:18.355801Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headless/udemy-com-20261023T003318.json- Original file SHA-256
5222a588734857e967932f7c7d37ce767bca6a8a8d6e9b6bde9d309d62ebc3ce
Run ID: research-5222a5887348. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Scanner error
Scanner error
- Measurement
- Scanner error
- Page context
- Page not measured
- Scan time
- 2026-10-23T00:44:28.907394Z
- Browser / scanner
- 156.0.8078.4 / 0.4
The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.
Source record and integrity
- Original source
results/headless/udemy-com-20261023T004428.json- Original file SHA-256
aaa88e18f684b158a5a59fd0a596dfc6969682beda22fb1ef44cd148d81c6121
Run ID: research-aaa88e18f684. The JSON contains sanitized observations, not the original private scan payload.
Research setup
Navigation failed
Navigation failed
- Measurement
- Navigation failed
- Page context
- Page not measured
- Scan time
- 2026-10-23T00:44:29.008785Z
- Browser / scanner
- 156.0.8078.4 / 0.4
Navigation or page loading failed in this browser setup. The record does not establish why it failed.
Source record and integrity
- Original source
results/headless/udemy-com-20261023T004429.json- Original file SHA-256
a09eccc052756baac8d1beca78ab461c27fd7c430dd3865fd1e7a5cbcfa836e8
Run ID: research-a09eccc05275. The JSON contains sanitized observations, not the original private scan payload.
Queries, request bodies, cookies, extracted values, raw errors, and session payloads are excluded before publication. The source digest identifies the original private record.
Read the sanitized JSON →