Developer Tools
Format, validate and convert JSON, CSV and Base64 data.
JSON Formatter
Format and beautify JSON online with proper indentation, entirely in your browser.
JSON Validator
Validate JSON syntax and get clear error messages with line and column numbers.
JSON to CSV
Convert a JSON array of objects into a CSV file online for free.
CSV to JSON
Convert CSV data into a JSON array of objects online for free.
Base64 Encoder
Encode and decode Base64 text and data online, entirely in your browser.
XML Formatter
Format and validate XML online for free with proper indentation, in your browser.
XML Validator
Validate XML syntax online for free and see a clear error message when it is invalid.
URL Encoder
Encode and decode URLs and query string components online for free.
JWT Decoder
Decode a JWT header and payload online for free, entirely in your browser.
UUID Generator
Generate random UUID v4 values online for free, using secure browser randomness.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back, free and in your browser.
Color Converter
Convert colors between HEX, RGB and HSL online for free, in your browser.
Regex Tester
Test regular expressions against sample text and see matches highlighted, for free.