OpenCookie — Local Cookie Editor

Trustworthy, local-only cookie editor for Manifest V3. View, edit, import/export cookies. Zero data upload.

OpenCookie is a trustworthy, local-only cookie editor for Manifest V3. View, edit, add, delete, search, and import/export cookies for the current tab — with zero data upload. Everything stays inside your browser. WHY OPENCOOKIE • Local-only by design. There is no server, no analytics, no tracking, no account. Your cookies never leave your machine. • Open source and auditable. The full source is on GitHub — read exactly what it does. • Minimal permissions. Nothing scary at install: the extension asks for site access only when you grant it, per-site or for all sites, from inside the popup. FEATURES • View all cookies for the current tab, with full attributes. • Add, edit, and delete individual cookies. • Delete all cookies on the page, with a confirmation step. • One-click copy of a cookie's value. • Live search and filter by name or value. • Import / export cookies as JSON — compatible with common cookie tools — via copy, paste, or file. • Light / dark theme, remembered across sessions. PRIVACY No data ever leaves your browser. No remote server, no analytics, no advertising, no third-party sharing. Local storage is used only to remember your light/dark theme preference. Full privacy policy: https://github.com/mq408/OpenCookie/blob/main/PRIVACY.md Open source (MIT): https://github.com/mq408/OpenCookie