{"slug": "creepjs", "name": "CreepJS", "category": "browsers", "category_name": "Browsers and extensions", "description": "", "recommenders": 3, "commenters": 7, "warners": 0, "score": 3.909, "rising": 1.67, "first": "2025-11-22", "latest": "2026-10-12", "why": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic", "why_is_quote": true, "has_verdict": false, "sentiment": {"recommend": 4, "neutral": 4, "compare": 0, "warn": 0}, "spark": [0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2], "listed": true, "loved": [], "caveat": "", "short_quote": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic", "kind": "", "icon": false, "domain": null, "github_repo": "github.com/abrahamjuliot/creepjs", "official_url": "https://github.com/abrahamjuliot/creepjs", "pricing": "", "aliases": ["CreepJS"], "verdict": null, "praise": [{"label": "", "summary": "", "quotes": [{"id": 800848304, "item_id": 50053019, "url": "https://news.ycombinator.com/item?id=50053019", "by": "3RTB297", "date": "2026-10-12", "version": null, "stance": "recommend", "quote": "Worked extremely well", "excerpt": "18 months ago Google publicly stated they were going to start using browser fingerprint data to track users, a reversal of their 2019 policy on it because it was considered too invasive. https://www.malwarebytes.com/blog/news/2025/02/google-now-allows-digital-fingerprinting-of-its-users There's a fingerprint demo on github called JSCreep (https://abrahamjuliot.github.io/creepjs/) that used to keep your fingerprint pr", "context": "", "use_case": "", "switched_from": "", "story": "Fingerprints are the new cookies"}, {"id": 800820864, "item_id": 50051304, "url": "https://news.ycombinator.com/item?id=50051304", "by": "ranger_danger", "date": "2026-10-12", "version": null, "stance": "recommend", "quote": "https://abrahamjuliot.github.io/creepjs/", "excerpt": "> Wow, that is a seriously impressive demo https://abrahamjuliot.github.io/creepjs/", "context": "", "use_case": "", "switched_from": "", "story": "Fingerprints are the new cookies"}, {"id": 761045424, "item_id": 47565339, "url": "https://news.ycombinator.com/item?id=47565339", "by": "alexspring", "date": "2026-03-29", "version": null, "stance": "recommend", "quote": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic", "excerpt": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic. A normal user will often appear 31% or lower 'like headless score', mobile is a bit different. You'll still have trouble against sophisticated infra: https://x.com/_alexspring/status/2037968450753335617", "context": "", "use_case": "bot detection", "switched_from": "", "story": "The bot situation on the internet is worse than you could imagine"}, {"id": 740407681, "item_id": 46275480, "url": "https://news.ycombinator.com/item?id=46275480", "by": "alexspring", "date": "2025-12-15", "version": null, "stance": "recommend", "quote": "is a combination of IP filtering (https://spur.us/) and Fingerprinting", "excerpt": "The only way you can block these \"AI\" scrapers is a combination of IP filtering (https://spur.us/) and Fingerprinting (https://abrahamjuliot.github.io/creepjs/). Things like browserbase are easy to block with this. It's a losing battle though, personally moved entirely to real environments for https://browser.cash/developers", "context": "", "use_case": "Browser fingerprinting", "switched_from": "", "story": "Stop crawling my HTML \u2013 use the API"}]}], "caveats": [], "who": [], "tags": [], "use_cases": ["browser fingerprint test", "browser fingerprinting demo", "bot detection", "browser fingerprinting"], "compared": [{"slug": "mullvad-browser", "name": "Mullvad Browser", "co": 2, "switched_from": 0, "switched_to": 0}], "makers": [], "threads": [{"url": "https://news.ycombinator.com/item?id=50048642", "title": "Fingerprints are the new cookies", "mentions": 2}, {"url": "https://news.ycombinator.com/item?id=49057175", "title": "Kill The Cookie Banner", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=48067119", "title": "Google Broke reCAPTCHA for De-Googled Android Users", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=48062178", "title": "A web page that shows you everything the browser told it without asking", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=47564469", "title": "The bot situation on the internet is worse than you could imagine", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=46265579", "title": "Stop crawling my HTML \u2013 use the API", "mentions": 1}], "sentiment_by_month": {"2025-11": {"neutral": 1}, "2025-12": {"recommend": 1}, "2026-01": {}, "2026-02": {}, "2026-03": {"recommend": 1}, "2026-04": {}, "2026-05": {"neutral": 2}, "2026-06": {}, "2026-07": {"neutral": 1}, "2026-08": {}, "2026-09": {}, "2026-10": {"recommend": 2}}, "versions": [], "version_unnamed": 0, "family_ref": null, "runs_on": null, "lines": [], "quotes": [{"id": 800848304, "item_id": 50053019, "url": "https://news.ycombinator.com/item?id=50053019", "by": "3RTB297", "date": "2026-10-12", "version": null, "stance": "recommend", "quote": "Worked extremely well", "excerpt": "18 months ago Google publicly stated they were going to start using browser fingerprint data to track users, a reversal of their 2019 policy on it because it was considered too invasive. https://www.malwarebytes.com/blog/news/2025/02/google-now-allows-digital-fingerprinting-of-its-users There's a fingerprint demo on github called JSCreep (https://abrahamjuliot.github.io/creepjs/) that used to keep your fingerprint pr", "context": "", "use_case": "", "switched_from": "", "story": "Fingerprints are the new cookies"}, {"id": 800820864, "item_id": 50051304, "url": "https://news.ycombinator.com/item?id=50051304", "by": "ranger_danger", "date": "2026-10-12", "version": null, "stance": "recommend", "quote": "https://abrahamjuliot.github.io/creepjs/", "excerpt": "> Wow, that is a seriously impressive demo https://abrahamjuliot.github.io/creepjs/", "context": "", "use_case": "", "switched_from": "", "story": "Fingerprints are the new cookies"}, {"id": 784954480, "item_id": 49059655, "url": "https://news.ycombinator.com/item?id=49059655", "by": "aspbee555", "date": "2026-07-26", "version": null, "stance": "neutral", "quote": "https://creepjs.org/checker", "excerpt": "changing IP is not really enough for privacy, there is many ways to fingerprint your machine/browser and uniquely identify you across networks https://creepjs.org/checker", "context": "", "use_case": "Browser fingerprint test", "switched_from": "", "story": "Kill The Cookie Banner"}, {"id": 769420320, "item_id": 48088770, "url": "https://news.ycombinator.com/item?id=48088770", "by": "himata4113", "date": "2026-05-10", "version": null, "stance": "neutral", "quote": "https://abrahamjuliot.github.io/creepjs/ took this and made it PoW", "excerpt": "https://abrahamjuliot.github.io/creepjs/ took this and made it PoW", "context": "", "use_case": "", "switched_from": "", "story": "Google Broke reCAPTCHA for De-Googled Android Users"}, {"id": 769183024, "item_id": 48073939, "url": "https://news.ycombinator.com/item?id=48073939", "by": "jwally", "date": "2026-05-09", "version": null, "stance": "neutral", "quote": "This also exists:", "excerpt": "This also exists: https://abrahamjuliot.github.io/creepjs/ TBH, its never anything super exotic (though it helps) but simple stupid basic things like cookies that does 70% of the work here. Also, your IP address at home is _really_stable_. If I can give you a sticky cookie (cookies, indexdb, localstorage), a half-assed fingerprint, and tie it to your IP-address, and know you're not on a cell-tower; this is probably g", "context": "", "use_case": "Browser fingerprinting demo", "switched_from": "", "story": "A web page that shows you everything the browser told it without asking"}, {"id": 761045424, "item_id": 47565339, "url": "https://news.ycombinator.com/item?id=47565339", "by": "alexspring", "date": "2026-03-29", "version": null, "stance": "recommend", "quote": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic", "excerpt": "You can build some great anti-bot mechanisms with simple https://github.com/abrahamjuliot/creepjs logic. A normal user will often appear 31% or lower 'like headless score', mobile is a bit different. You'll still have trouble against sophisticated infra: https://x.com/_alexspring/status/2037968450753335617", "context": "", "use_case": "bot detection", "switched_from": "", "story": "The bot situation on the internet is worse than you could imagine"}, {"id": 740407681, "item_id": 46275480, "url": "https://news.ycombinator.com/item?id=46275480", "by": "alexspring", "date": "2025-12-15", "version": null, "stance": "recommend", "quote": "is a combination of IP filtering (https://spur.us/) and Fingerprinting", "excerpt": "The only way you can block these \"AI\" scrapers is a combination of IP filtering (https://spur.us/) and Fingerprinting (https://abrahamjuliot.github.io/creepjs/). Things like browserbase are easy to block with this. It's a losing battle though, personally moved entirely to real environments for https://browser.cash/developers", "context": "", "use_case": "Browser fingerprinting", "switched_from": "", "story": "Stop crawling my HTML \u2013 use the API"}, {"id": 736291504, "item_id": 46018219, "url": "https://news.ycombinator.com/item?id=46018219", "by": "nobody42", "date": "2025-11-22", "version": null, "stance": "neutral", "quote": "You could test with this", "excerpt": "You could test with this: https://github.com/abrahamjuliot/creepjs Does it store the data? Unknown. The best browser for protection is https://mullvad.net/en/browser because it makes the connection uniform, to better blend in.", "context": "", "use_case": "", "switched_from": "", "story": "The privacy nightmare of browser fingerprinting"}]}