CookiePeek – Privacy-first, local cookie management and decoding

Summary: CookiePeek is a fast, local cookie manager for developers that displays, searches, sorts, decodes, edits, imports, exports, and bulk deletes cookies directly in the browser without network requests or telemetry.

What it does

It shows all cookies on any site via a toolbar icon, decodes JWT/Base64/URL values inline, allows editing or adding cookies, and exports data in JSON, Netscape, or Header formats. Everything runs locally in Chrome, Firefox, Edge, and Opera.

Who it's for

Developers debugging authentication or testing cookie-based workflows who need quick, privacy-focused cookie inspection.

Why it matters

It eliminates the need to juggle multiple DevTools panels and avoids heavy, telemetry-enabled tools by providing instant, zero-noise cookie access.