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Index/Topics/Browser APIs

Browser APIs

Browser APIs used for fingerprinting, such as canvas and WebGL rendering, font enumeration, and audio APIs.

Fact-Checks

2 results
Jan 16, 2026
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What specific fingerprinting techniques (canvas, WebGL, audio, fonts, IP) does DuckDuckGo blocklist target?

DuckDuckGo’s tracker blocklists and Tracker Radar aim to identify and stop trackers that “use browser APIs” or “use fingerprinting” as third parties, and the company says it both blocks many fingerpri...

Jan 30, 2026

What technical methods does DuckDuckGo Tracker Radar use to detect and classify trackers?

’s detects and classifies using an automated, open-source crawling and analysis pipeline: a Puppeteer-based collector captures third-party requests and page behavior, and a detector pipeline processes...