API request tester

Browser

Send an HTTP request and inspect the formatted response — a Postman-style tester.

Runs in your browser. Your files are not uploaded.

Request

Runs directly from your browser — the target API must allow CORS for this to work.

Method

URL

Headers

Format, validate and minify JSON.

Encode text or files to Base64, or decode it back.

Get the MD5, SHA-1, SHA-256 or SHA-512 hash of text or a file.

Generate random v4 UUIDs, one at a time or in bulk.