Developer tools
Free developer utilities: JSON formatter, Base64, JWT decoder, regex tester, hash generator, SQL and CSS formatters, cron explainer and more. Runs locally.
JSON FormatterBeautify, minify and validate JSON with error lines.
Base64 Encode / DecodeEncode text to Base64 or decode it back, with UTF-8.
URL Encode / DecodePercent-encode or decode URLs and query strings.
Hash GeneratorSHA-1, SHA-256, SHA-384 and SHA-512 of text or files.
UUID GeneratorGenerate random v4 UUIDs, one or thousands at a time.
Unix Timestamp ConverterConvert epoch time to a readable date and back.
Regex TesterTest regular expressions with live match highlighting.
JWT DecoderDecode JWT header and payload with readable dates.
SQL FormatterBeautify SQL queries for MySQL, PostgreSQL and more.
HTML FormatterBeautify and indent messy HTML code.
CSS FormatterBeautify minified CSS into readable rules.
JavaScript FormatterBeautify minified JavaScript with clean indents.
HTML MinifierShrink HTML by removing comments and whitespace.
CSS MinifierCompress CSS by stripping comments and spaces.
JavaScript MinifierRemove comments and whitespace from JavaScript.
Cron Expression ExplainerExplain cron schedules in plain English with next runs.
JSON to YAMLConvert JSON to clean YAML instantly.
YAML to JSONConvert YAML to formatted or minified JSON.
JSON to CSVTurn a JSON array into a CSV spreadsheet.
CSV to JSONConvert CSV with headers into a JSON array.
HTML Entity Encoder / DecoderEscape or unescape HTML entities like &.
User Agent ParserSee your browser, OS and device from a user agent.
Screen Resolution CheckerCheck your screen size, viewport and pixel ratio.
HTTP Status CodesSearchable list of HTTP status codes and meanings.