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JSON Formatter & Validator Beautify, minify and validate JSON with clear error locations and optional key sorting. Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. UTF-8 and URL-safe supported. URL Encoder / Decoder Percent-encode or decode URLs and query strings, and inspect every part of a URL. UUID Generator Generate random UUID v4 or time-ordered UUID v7 identifiers in bulk. Hash Generator Create MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files, and verify checksums. JWT Decoder Decode a JSON Web Token to inspect its header, payload and expiry. Nothing is sent anywhere.