Cookie Manager

A modern userscript that turns any browser into a full-featured cookie editor. Runs on Tampermonkey, Violentmonkey, Greasemonkey, Userscripts (Safari), Stay (Safari), Via (Android) and any other userscript engine.

Features

• Dual engine — uses the modern cookieStore API on Chromium, automatically falls back to document.cookie on Firefox/Safari/legacy
• Full CRUD — add / edit / delete / batch-add with smart paste parsing
• Multi-select — select-all (filter-aware), bulk copy, bulk delete with one-click undo
• Sort / filter / group — sort by key / size / expires (asc/desc), filter Secure-only / HttpOnly-only, group by domain or root domain
• Multiple copy formats — Cookie Header, cURL --cookie, JSON (DevTools / EditThisCookie compatible), KV
• Import / Export JSON — back up your login state, share between devices
• Detail view — tap a cookie to see Domain / Path / Expires / Secure / HttpOnly / SameSite / Size, with size warning at >4 KB
• Undo delete — every delete shows a 5-second Undo toast
• Dark mode — auto / light / dark, follows prefers-color-scheme by default
• Bilingual UI — instant 中/EN switch, persists across sessions, auto-detects browser language
• Search — filter by key or value
• Draggable floating button — position is remembered

Install

1. Install a userscript manager:

   • Tampermonkey (Chrome / Edge / Firefox / Safari / Opera)
   • Violentmonkey (Chrome / Edge / Firefox)
   • Greasemonkey (Firefox)
   • Userscripts (Safari macOS / iOS)
   • Via (Android, built-in support)

2. Open the raw script file:

   👉 Install Cookie Manager

   Your userscript manager will pick it up and ask you to confirm.

Usage

A small blue C button appears at the bottom-right of every page. Tap it to open the manager.

• Drag the button anywhere — its position is saved.
• Search by key / value.
• Multi-select mode → bulk operations + filter-aware select all.
• Copy As... dropdown → choose the format you need (header for HTTP debugging, cURL for terminal, JSON for backup).
• More ▾ → Export / Import JSON.
• Tap any cookie to expand its full details.
• Edit lets you rename the key, change value/domain/path/expiry — all editable.
• Switch language with the 中/EN pill in the header.

Browser compatibility

Engine	Status	Notes
Tampermonkey	✅ Full	Tested on Chromium
Violentmonkey	✅ Full	Tested on Chromium
Greasemonkey 4	✅ Works	Falls back to localStorage for settings (sync GM_* not available)
Userscripts (Safari)	✅ Full	macOS / iOS
Via Browser (Android)	✅ Full	Original target platform
Stay (Safari)	✅ Should work	Untested but uses same APIs

Browser cookie API	Status
Chromium-based (Chrome/Edge/Brave/Opera/Vivaldi)	Uses cookieStore — full Domain/Path/Secure/HttpOnly/SameSite/Expires
Firefox	Falls back to document.cookie — limited to non-HttpOnly cookies for the current host
Safari	Falls back to document.cookie — same limitation

Note: HttpOnly cookies are by design unreadable from JavaScript on any browser without the cookieStore API. This is a browser security feature, not a script limitation.

Privacy

This script makes zero network requests. All data stays in your browser. No telemetry, no analytics, no remote calls.

Development

git clone https://github.com/Minis233/cookie-manager.git
cd cookie-manager

# Set up the preview harness (copy or symlink the script into preview/)
cp cookie-manager.user.js preview/script.js
python3 -m http.server 8765 --directory preview
# Open http://localhost:8765/index.html

The preview harness in preview/index.html mocks GM_getValue / GM_setValue / GM_registerMenuCommand so you can iterate without installing anything.

Roadmap

• Optional dark mode (v0.4.0)
• Quick filter chips (Secure / HttpOnly) (v0.4.0)
• Sort by key / size / expires (v0.4.0)
• Group by domain (v0.4.0)
• Drag to reorder selection
• Per-domain favorite presets
• Filter by domain pattern

PRs welcome.

License

MIT © Minis