Developer Tools
The utilities developers reach for every day, without ads in your face, trackers in your payload or data leaving your machine.
JSON Formatter & Validator
Format, validate, minify and sort JSON with clear error messages.
JSON to CSV Converter
Convert JSON arrays to CSV for Excel, and CSV back to JSON.
Base64 Encode / Decode
Encode and decode Base64 with full UTF-8 and URL-safe support.
URL Encode / Decode
Percent-encode or decode URLs and inspect query parameters.
HTML Entity Encoder
Escape and unescape HTML special characters and entities.
JWT Decoder
Decode JWT header and payload, check expiry and verify HS256 signatures.
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes of text or files.
UUID Generator
Generate random v4 or time-ordered v7 UUIDs in bulk.
Unix Timestamp Converter
Convert Unix epoch timestamps to human dates and back.
Regex Tester
Test JavaScript regular expressions with live match highlighting.
Color Converter
Convert HEX, RGB, HSL, HSV and CMYK and check contrast.
CSS Minifier & Beautifier
Minify CSS for production or beautify it for reading.
Number Base Converter
Convert between binary, octal, decimal and hexadecimal.