Developer Tools
Format JSON, decode JWTs, test regex, encode Base64 and URLs, generate UUIDs and more. 16 free developer tools that run locally, so your data stays private.
Tools in Developer Tools
- Base64 Encoder & Decoder Encode text to Base64 or decode it back, with full Unicode and URL-safe support.
- Base64 Image Decoder Paste a base64 string or data URI and decode it back into a downloadable image.
- Cron Expression Generator Build a cron expression from simple fields, or decode an existing one into plain English.
- HEX to RGB Converter Convert a HEX colour to RGB and HSL, and back again, with a live preview.
- JSON Compare Compare two JSON documents and see exactly what was added, removed, or changed.
- JSON Escape / Unescape Escape a string for safe use inside JSON, or unescape one back to plain text.
- JSON Formatter & Validator Format, validate, and minify JSON with clear error messages, in your browser.
- JWT Decoder Decode a JSON Web Token to read its header and payload claims, without uploading it.
- Regex Tester Test a regular expression against sample text and see every match highlighted live.
- SQL Beautifier Format messy SQL into clean, readable, indented queries.
- URL Encoder & Decoder Percent-encode text for a URL, or decode an encoded URL back to plain text.
- URL Parser Break any URL down into its protocol, host, path, query parameters, and hash.
- UUID Generator Generate any number of random UUIDs (v4), formatted however you need them.
- Unix Timestamp Converter Convert a Unix epoch timestamp to a readable date and back, in seconds or milliseconds.
- XML Formatter Pretty-print or minify XML, with instant validity checking, all in your browser.
- YAML Formatter Format YAML, or convert between YAML and JSON, instantly in your browser.