JSON Formatter, Validator & Minifier
Format, minify, sort and validate JSON in your browser, with exact error line and column, big-number warnings and one-click copy or download.
Free tools
All toolsJWT Decoder — Inspect, Verify & Check Expiry
Decode a JWT's header, payload and expiry, verify HS256/384/512 or RS/ES signatures with WebCrypto, and flag alg-none tokens. Nothing leaves your browser.
HMAC Signature Tester for Webhooks (SHA-1/256/512)
Compute and compare HMAC-SHA1/256/512 signatures for GitHub, Stripe, Shopify, Meta and Slack webhooks in your browser. Your secret never leaves the page.
cURL Command Converter — Go, PHP, Node & Python
Paste a curl command and convert it to Go, PHP, Node or Python, keeping headers, auth and body. It is parsed locally and never executed or sent anywhere.
HTTP Status Codes Reference
Look up any HTTP status code's meaning, common causes, whether to retry, and its defining RFC section — searchable and filterable by 1xx-5xx class.
Base64 & URL Encoder/Decoder
Encode or decode Base64, Base64url and percent-encoded URLs with full UTF-8 support, exact error positions and file-to-data-URI conversion in your browser.