Can it fetch a URL for me?

No — that would require a proxy and would expose your auth headers. Capture the response in your terminal or DevTools and paste it here.

Which content types are supported?

JSON today; XML/HTML pretty-printing is on the roadmap.

API Response Viewer

Paste an API response — with optional headers — and get a pretty-printed body plus a browsable tree. Deliberately paste-only: no live fetching, so no CORS problems and no credential exposure.

Response body

Headers (optional)

Awaiting input

Paste a response body on the left.

// Features

▸Pretty-print with syntax highlighting
▸Collapsible tree view
▸Optional header pane
▸Response size and line count

// How to use

01Paste your raw response body.
02Optionally paste headers into the headers pane.
03Browse the tree or copy the pretty-printed body.

// FAQ

Your data never leaves your browser. This tool runs 100% locally — no upload, no logging, no analytics on your inputs.

// Related tools

JSON Viewer

Browse JSON as a collapsible tree with syntax highlighting. Local-only.

JSON Formatter

Pretty-print and validate JSON with adjustable indentation. Runs entirely in your browser — nothing is uploaded.

JWT Decoder

Decode JWT header and payload with human-readable timestamps. Signature verification is intentionally out of scope.