ThumbmarkJS
World's fastest growing browser fingerprinting library
...With over 1 million monthly NPM downloads it is the worlds fastest growing browser fingerprinting library - currently processing roughly 1 billion identifications per month.
Using signals like canvas, audio, fonts, and WebGL, ThumbmarkJS generates a stable, persistent fingerprint with ~80% uniqueness that works across sessions, even in private/incognito browsing or after a cleared cache. Install client-side only via CDN or npm, or connect the optional hosted API to boost uniqueness to ~99%.