Debug · Free · Client-side
Cookie Header & LocalStorage Inspector
Paste stringified localStorage objects or raw Cookie HTTP headers. Parse, nest-expand JSON string values, and filter a searchable key–value tree — client-side only.
Tree
How this cookie header parser works
- 01 Choose localStorage JSON or Cookie header mode.
- 02 Paste a dump from DevTools or an HTTP Cookie header.
- 03 JSON string values are auto-parsed when possible.
- 04 Browse or filter the flattened key–value tree.
Frequently asked questions
Can this read my real browser cookies? +
No. For security, pages cannot access arbitrary cookies. Paste values you copy from DevTools or docs yourself.
Is pasted data uploaded? +
No. Parsing runs locally in JavaScript with no network request.
Why flatten nested JSON? +
A searchable path like user.roles.0 makes debugging large storage blobs faster than reading raw minified JSON.