Privacy
Cookies are credentials. A session cookie is often enough to log in as you. So the only honest way to build this tool is for the data never to leave your device — and for that to be something you can verify rather than something you have to believe.
Last updated:
The conversion happens in your browser
Every parser and serialiser on this site is JavaScript that runs on your machine. When you paste cookies and press Convert, no request is made. There is no API, no server-side processing and no queue.
The page is not allowed to phone home
The site is served with a Content-Security-Policy whose connect-src directive is set to none. That means the browser itself blocks this page from making any network request — fetch, XHR, WebSocket or beacon — regardless of what the code tries to do. Open DevTools, switch to the Network tab, and convert something: you will see nothing.
No analytics, no cookies of our own
There is no Google Analytics, no Yandex Metrica, no tag manager and no third-party script of any kind. The only cookie this site sets is cclang, which remembers the language you picked so you are not redirected by geolocation on your next visit. It contains one of three values: en, ru or zh.
What the server logs
The web server keeps standard access logs — IP address, timestamp, requested path, user agent — which is what any web server does and what is needed to keep it running. Those logs record that a page was requested. They cannot record what you pasted into it, because that never reaches the server.
Language and geolocation
Your approximate country is derived from your IP address by the web server, using an offline database, purely to redirect a first visit to the matching language. No location data is stored and nothing is sent to a third-party geolocation service.
Still, be sensible
If you are pasting live session cookies for an account that matters, close the tab when you are done, and remember that anything you copy sits in your clipboard afterwards. Treat exported cookie files the way you would treat a password file.
Not affiliated with Anthropic
This is an independent open tool. It is not made by, endorsed by, or connected to Anthropic PBC in any way. Claude is a trademark of Anthropic PBC, used here only to refer to it.