Cookie Toolkit
Used to fill the domain field when the cookie has none
How to use — import cookies into your browser
1
Install a Cookie extension
Chrome / Edge: install "Cookie-Editor" from the Web Store. Firefox: same name in Add-ons. It lets you view and write cookies for the current site.
2
Clean up the cookie here
Paste the raw account line above and click "Auto-detect", or pick the mode you need (Base64 decode / repair). Copy the JSON result.
3
Open the target site first
Go to the matching website (e.g. open instagram.com before importing an Instagram cookie), otherwise the browser rejects a cross-domain cookie.
4
Import & refresh
Open Cookie-Editor → the "Import" button (bottom bar) → paste the JSON → Import → refresh the page and you are logged in.
Extension says "Invalid JSON" when importing?
Usually the cookie is Base64-encoded, or missing the [ ] brackets required by the extension. Switch to "Base64 Decode" then "Repair / Autocomplete" here to clean it, then copy again.
How do I fill the domain?
If the cookie string has no domain, type the target site into "Default domain" (e.g. .instagram.com, keep the leading dot). The tool binds it to every cookie automatically.
Auto-detect picked the wrong part?
Account lines are split by ----, |, tab or spaces. If the cookie is not recognized, the segment list appears — just click the correct segment number to use it.
Is my cookie data safe?
Yes. Every parse / decode / repair runs in your browser via JavaScript. No cookie ever leaves your device or reaches our server.