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Website evidence · pilot dataset

Does theguardian.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.

Open evidence JSON ↗

All 11 source records are included in the JSON. 2 older runs have no recorded timestamp; missing provenance stays unknown. 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 websites

Visitor setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-22T16:44:32.432358Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleLatest news, sport and opinion from the Guardian

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls

Frame: https://www.theguardian.com/us

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

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 68 requests
Captured scripts
3
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

  • assets.guim.co.uk
  • i.guim.co.uk
Other recorded API calls 1
  • document.cookie.read1 calls
Source record and integrity
Original source
results/headful/theguardian-com-20261022T164432.json
Original file SHA-256
33ab83188cb320ffa1741839403cd5f1d2d42fae58eb3c36a68a8b3220b75a68

Run ID: headful-33ab83188cb3. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (3)

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned
Navigation failed — no usable scan result

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/theguardian-com.json
Original file SHA-256
e9ab39fda955b85677f29e8c06bc56d8f25914df9ccce68cf7f6225a2296eab0

Run ID: headful-e9ab39fda955. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
2026-10-19T06:14:12.879734Z
Browser / scanner
156.0.8078.4 / 0.3

Captured titleLatest news, sport and opinion from the Guardian

CanvasDraws text and reads canvas output.2 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • https://assets.guim.co.uk/commercial/[redacted-id]/graun.standalone.commercial.jsline 1 · col 22046
canvas.getContext1 calls

Frame: https://www.theguardian.com/us

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

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 73 requests
Captured scripts
13
Instrumented frames
2
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

  • assets.guim.co.uk
  • i.guim.co.uk
Other recorded API calls 1
  • document.cookie.read21 calls
Source record and integrity
Original source
results/headful/theguardian-com-20261019T061412.json
Original file SHA-256
079c9870d4fb07e6a68432a838276fed554beb2f32de79c1ef5168acc484318e

Run ID: headful-079c9870d4fb. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Scanner error

Scanner error

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Scanner error
Page context
Page not measured
Scan time
2026-10-22T16:44:31.702618Z
Browser / scanner
156.0.8078.4 / 0.4
Scanner error — no usable scan result

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/theguardian-com-20261022T164431.json
Original file SHA-256
7751a42de7ee56abe92f2fc1fbd4f8dc32d1ecfd0e19e62becb6fa3b3857c8b3

Run ID: headful-7751a42de7ee. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-23T01:04:09.098759Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleLatest news, sport and opinion from the Guardian

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls

Frame: https://www.theguardian.com/us

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

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 59 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

  • assets.guim.co.uk
  • i.guim.co.uk
Other recorded API calls 1
  • document.cookie.read1 calls
Source record and integrity
Original source
results/headless/theguardian-com-20261023T010409.json
Original file SHA-256
45df4242926a06589c79d6e263959be6e42a6b9e9d6d9ef73b8dbec7ff645b85

Run ID: research-45df4242926a. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (6)

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned

Captured titleLatest news, sport and opinion from the Guardian

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.2 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

navigator.platform4 calls
  • https://assets.guim.co.uk/assets/3834.client.web.bde416f068a5e293b798.jsline 1 · col 5414
  • https://assets.guim.co.uk/assets/3834.client.web.bde416f068a5e293b798.jsline 1 · col 5471
navigator.userAgent17 calls
  • https://assets.guim.co.uk/assets/2181.client.web.7f9b5b004f9ba7206458.jsline 1 · col 4502
  • https://assets.guim.co.uk/commercial/[redacted-id]/graun.266.commercial.jsline 1 · col 42692
  • https://assets.guim.co.uk/commercial/[redacted-id]/graun.consented-advertising.commercial.jsline 1 · col 1060
  • https://sourcepoint.theguardian.com/unified/wrapperMessagingWithoutDetection.jsline 1 · col 5575
  • https://sourcepoint.theguardian.com/unified/wrapperMessagingWithoutDetection.jsline 1 · col 80868
Providers, script signatures, and DNS 2 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

  • Google Adssecurepubads.g.doubleclick.net, www.googleadservices.com, www3.doubleclick.net
  • Permutive (audience platform)cdn.permutive.app
Network and worker observations 129 requests
Captured scripts
0
Instrumented frames
Not recorded
Google Ads observed
Yes
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

  • api.intentiq.com
  • assets.guim.co.uk
  • c.amazon-adsystem.com
  • cdn.adsafeprotected.com
  • cdn.brandmetrics.com
  • cdn.confiant-integrations.net
  • cdn.id5-sync.com
  • cdn.permutive.app
  • cdn.privacy-mgmt.com
  • contributions.guardianapis.com
  • i.guim.co.uk
  • id5-sync.com
  • sb.scorecardresearch.com
  • securepubads.g.doubleclick.net
  • www.googleadservices.com
  • www3.doubleclick.net
Other recorded API calls 2
  • document.cookie.read76 calls
  • document.cookie.write25 calls
Source record and integrity
Original source
results/headless/theguardian-com.json
Original file SHA-256
275c67b1a8886adadc5ea1bf5924bc1f64323e58a265366ada2f8df1887ef40a

The research mode is inferred from the archive folder because this legacy record has no mode field.

Run ID: research-275c67b1a888. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
2026-10-19T05:56:58.658207Z
Browser / scanner
156.0.8078.4 / 0.3

Captured titleLatest news, sport and opinion from the Guardian

CanvasDraws text and reads canvas output.2 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • https://assets.guim.co.uk/commercial/[redacted-id]/graun.standalone.commercial.jsline 1 · col 22046
canvas.getContext1 calls

Frame: https://www.theguardian.com/us

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

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 73 requests
Captured scripts
4
Instrumented frames
2
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

  • assets.guim.co.uk
  • i.guim.co.uk
Other recorded API calls 1
  • document.cookie.read13 calls
Source record and integrity
Original source
results/headless/theguardian-com-20261019T055658.json
Original file SHA-256
f11d215d5e9fe3bbec993603573005745d6dfa0d85cfd197ce7014f18c32bbe5

Run ID: research-f11d215d5e9f. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T19:09:05.284708Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

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/theguardian-com-20261022T190905.json
Original file SHA-256
edd30d312ed763bcfefeb3763a28e06eb33017bf552794be6b09351aeaa8e4c3

Run ID: research-edd30d312ed7. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-23T00:06:45.527197Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

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/theguardian-com-20261023T000645.json
Original file SHA-256
8fc41a78adffb11ad92994524765e3329e8a6eb4afe4c517072235d2c566903f

Run ID: research-8fc41a78adff. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-23T00:30:26.763571Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

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/theguardian-com-20261023T003026.json
Original file SHA-256
4bd70023388d9e8a9b4536ef3a537105a7ac0e93789ee87ab40663fb491c8ea4

Run ID: research-4bd70023388d. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-23T00:41:53.347556Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

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/theguardian-com-20261023T004153.json
Original file SHA-256
4bcd50b2383c98dd68bfac9a986c85b58c8e379fbacf1b20a93d174bc611cd53

Run ID: research-4bcd50b2383c. 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 →