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JSON formatters, syntax validators, JWT token decoders, Base64 converters, Unicode analyzers, and cryptographic hash utilities.
Format, pretty-print, validate, and minify JSON data with diagnostic error tracking.
Check JSON syntax validity, pinpoint matching brackets, and diagnose syntax errors.
Decode and inspect JSON Web Tokens (JWT) locally to view header, payload claims, and dates.
Inspect Unicode code points, UTF-8 bytes, UTF-16 units, and detect zero-width characters.
Convert Unix epoch timestamps in seconds and milliseconds to ISO 8601, RFC 3339, and local dates.
Generate cryptographic MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes locally.
Convert text, strings, and files into Base64 format and back.
Generate RFC 4122 version 4 compliant universally unique identifiers (UUIDs) locally.
Encode and decode URL parameters and URI components safely and instantly.
Generate secure random passwords locally using CSPRNG entropy rules.
Generate customizable, high-resolution QR codes from text or URL parameters.
Generate CODE128, EAN-13, EAN-8, and UPC-A barcodes as scalable vector SVGs.
Pick colors, inspect HSL/RGB/HEX values, and generate color harmonies.
Lookup IETF RFC 9110 HTTP status codes, meanings, developer recovery actions, and response headers.
All utilities in the Developer Tools category operate locally inside your web browser using modern Web APIs (such as Web Crypto, HTML5 Canvas, FileReader, and WebAssembly). Your document streams, binary files, tokens, and text inputs remain inside your local browser memory and are not sent to any backend tool-processing servers.