MARZDeveloper Tools
Formatters, converters, generators, and testers for everyday coding tasks.
20 tools
JSON Formatter & ValidatorFormat, validate, minify, and compare JSON — all in your browser.XML FormatterPretty-print and validate XML with proper indentation.YAML FormatterFormat, validate, and convert YAML to/from JSON.CSV ConverterConvert CSV to JSON, or JSON to CSV, instantly in your browser.Base64 Encoder/DecoderEncode text to Base64 or decode Base64 back to plain text.URL Encoder/DecoderPercent-encode or decode URLs and query string components.Code FormatterFormat HTML, CSS, and JavaScript with consistent style, right in your browser.Regex TesterBuild and test regular expressions with live match highlighting.JWT DecoderDecode JSON Web Tokens to inspect their header and payload.Unix Timestamp ConverterConvert between Unix timestamps and human-readable dates.UUID GeneratorGenerate random UUID v4 identifiers in bulk.Hash GeneratorGenerate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.Password GeneratorGenerate strong, random passwords with customizable character sets.cURL Command GeneratorBuild a cURL command from a method, URL, headers, and body.API Request BuilderCompose an HTTP request and preview it as cURL, fetch, or a raw HTTP message.HTTP Status Code ReferenceLook up any HTTP status code's meaning, category, and typical use case.User Agent ParserParse a User-Agent string into browser, engine, OS, and device details.Color ConverterConvert colors between HEX, RGB, HSL, and CSS names.Cron Expression GeneratorBuild and understand cron expressions with a plain-English description.QR Code GeneratorGenerate a downloadable QR code from any text, URL, or Wi-Fi credentials.