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Developer tools
Format, validate, convert, generate, and inspect common developer data. Use them locally in your browser for quick, privacy-first results.
JSON FormatterAIFormat, minify, validate, and inspect JSON safely in the browser.</>json · formatter · validatorXML FormatterPretty-print and validate XML with readable parser errors.</>xml · formatter · validatorSQL FormatterAIFormat SQL queries by dialect and make dense queries readable.</>sql · formatter · databaseCSS FormatterBeautify or minify CSS without sending stylesheets anywhere.</>css · formatter · beautifierMarkdown PreviewerPreview GitHub-flavored Markdown with sanitized output.</>markdown · preview · gfmBase64 EncoderEncode and decode text or files with standard and URL-safe modes.</>base64 · encode · decodeURL EncoderEncode and decode URLs, components, and query strings.</>url · encode · decodeJWT DecoderDecode JWT headers and payloads without verification claims.</>jwt · token · decodeTimestamp ConverterConvert Unix timestamps, ISO strings, UTC, and local time.</>timestamp · unix · dateColor ConverterConvert HEX, RGB, HSL, and OKLCH with contrast checks.</>color · hex · rgbText Case ConverterSwitch text between camel, snake, kebab, Pascal, and title case.</>case · camel · snakeYAML ↔ JSON ConverterConvert YAML and JSON both ways with helpful error positions.</>yaml · json · converterJSON ↔ CSV ConverterFlatten JSON into CSV or rebuild simple tables from CSV.</>json · csv · converterNumber Base ConverterConvert binary, octal, decimal, hex, and custom bases.</>binary · hex · decimalPassword GeneratorGenerate strong passwords locally with entropy feedback.</>password · generator · securityUUID GeneratorGenerate UUID v4 and v7 values in bulk.</>uuid · guid · generatorLorem Ipsum GeneratorGenerate words, sentences, paragraphs, and HTML placeholders.</>lorem · ipsum · placeholderQR Code GeneratorCreate QR codes for text and URLs with export options.</>qr · code · generatorHash GeneratorHash text or files with modern Web Crypto algorithms.</>hash · sha · md5CSS Gradient GeneratorDesign linear, radial, and conic gradients with copyable CSS.</>css · gradient · generatorRegex TesterAITest patterns, flags, captures, and replacements live.</>regex · regexp · testerDiff CheckerAICompare two texts side by side or inline.</>diff · compare · textCron BuilderAIBuild cron expressions visually and preview upcoming runs.</>cron · builder · scheduleCron ExplainerAIExplain cron syntax and show upcoming run times.</>cron · explain · scheduleChmod CalculatorConvert Unix permissions between checkboxes, octal, and symbolic form.</>chmod · permissions · unixCode MinifierMinify JavaScript, CSS, and HTML with copyable output.</>minifier · javascript · css