Cookie 工具会上传我的数据吗?

不会。所有转换/解析均在你浏览器本地完成(纯前端),Cookie 内容不上传服务器,安全放心。

支持哪些 Cookie 格式转换?

支持字符串与 JSON 互转、Base64 解码、Netscape 格式转换,以及 Cookie 修复补全。

Cookie Toolkit

All processing runs locally in your browser, nothing is uploaded

String → JSON JSON → String Base64 Decode Repair / Autocomplete Batch replace

0 chars

Default domain

Used to fill the domain field when the cookie has none

How to use — import cookies into your browser

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.

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.

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.

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.

Free online Cookie toolbox: string⇌JSON conversion, Base64 double decoding, Netscape format conversion, Cookie repair and completion. Pure front-end local processing, no upload to server, safe and reliable

Frequently Asked Questions

Will Cookie tools upload my data?

No. All conversions/parsing are done locally in your browser (pure front-end), Cookie content is not uploaded to the server, safe and secure

Which Cookie format conversions are supported?

Supports conversion between strings and JSON, Base64 decoding, Netscape format conversion, and Cookie repair and completion