head to head · open source
fingerprintjs vs SingleFile
fingerprintjs has 28,466 GitHub stars, 2,621 forks, 19 open issues and last shipped yesterday. SingleFile has 22,411 stars, 1,410 forks, 101 open issues and last shipped yesterday. fingerprintjs leads on adoption by 27% (28,466 vs 22,411 stars). fingerprintjs is written in TypeScript under MIT; SingleFile is written in JavaScript under AGPL-3.0. fingerprintjs has attracted 9% as many forks as stars, SingleFile 6%. fingerprintjs was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| fingerprintjs | SingleFile | |
|---|---|---|
| GitHub stars | ★ 28K | ★ 22K |
| License | MIT | AGPL-3.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.6K | ⑂ 1.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fingerprintjs if
- You weight community size — 28K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick SingleFile if
- You want the SingleFile feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and SingleFile fits your workflow better
About fingerprintjs
FingerprintJS is an open source, client side browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them, aimed at web developers and engineering teams that need to recognise returning browsers without depending on cookies or local storage.
read the full fingerprintjs overview →
About SingleFile
SingleFile is a web extension, and also a command line tool, that saves a complete web page into a single HTML file. It is written in JavaScript and released under the AGPL 3.0 license, and it lives in the browser extension ecosystem, with builds published for Chrome, Firefox (desktop and mobile), Microsoft Edge, Safari, Vivaldi, Brave, Waterfox, Yandex browser, and Opera. The project has been developed for roughly sixteen years and is distributed through the extension stores of Firefox, Chrome, Safari, and Microsoft Edge, as well as through manual installation from the project archive.
read the full SingleFile overview →
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Frequently asked questions
Is fingerprintjs or SingleFile more popular?
fingerprintjs has 28,466 GitHub stars and SingleFile has 22,411. fingerprintjs has the larger community by that measure.
Are fingerprintjs and SingleFile free?
Both are open source. fingerprintjs is licensed under MIT and SingleFile under AGPL-3.0. Neither carries a licence fee.
What is the difference between fingerprintjs and SingleFile?
fingerprintjs is written in TypeScript and SingleFile in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, fingerprintjs or SingleFile?
Choose fingerprintjs if you want the larger community (28,466 stars) or its MIT licence terms. Choose SingleFile if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.