Developer Tools
Format, inspect, encode, minify, and debug common web and data formats locally in your browser.
URL Encode / DecodeEncode or decode URL stringsBase64 Encode / DecodeEncode or decode Base64 stringsJSON FormatterFormat and validate JSON data
UUID GeneratorGenerate random UUIDs (v4) instantlyHash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-512 hashesCSV to JSONConvert CSV data to JSON formatTimestamp ConverterConvert between Unix timestamps and datesNumber Base ConverterConvert between binary, octal, decimal, and hexJSON to CSVConvert JSON data to CSV format with nested object flattening
YAML to JSONConvert between YAML and JSON formats with validationXML to JSONConvert between XML and JSON formats with attribute controlJWT DecoderDecode and verify JWT tokens with color-coded displaySQL FormatterFormat and beautify SQL queries with 17+ dialect supportJS MinifierMinify and beautify JavaScript with Terser
CSS MinifierMinify and beautify CSS with smart optimizationsHTML MinifierMinify HTML with configurable optimization presetsCron Expression BuilderBuild and explain cron schedules with visual controlsRegex TesterTest and debug JavaScript regular expressions with live highlightingASCII TableSearchable ASCII and extended Latin-1 referenceHTTP Status CodesSearchable reference for every HTTP response codeMIME TypesSearch the full MIME type registry by extension or type
Keycode InfoInspect keyboard events live — key, code, keyCode, modifiersUser Agent ParserParse User-Agent strings into browser, OS, device, engine
Subnet CalculatorIPv4 subnet details — network, broadcast, hosts, wildcard, binary, splittingIP Address ConverterIPv4 between dotted-decimal, integer, binary, and hexChmod CalculatorUnix file permissions: octal ↔ symbolic, setuid/setgid/stickyJSON Diff CheckerCompare two JSON documents semanticallyJSON MinifierStrip whitespace from JSON to shrink API payloads
JSON to TypeScriptGenerate TypeScript interfaces from a JSON sample
JSON to Go StructGenerate Go structs with JSON tags from a sample
JSON to Python Dataclass / TypedDictGenerate @dataclass or TypedDict classes from JSONBase32 Encode / DecodeRFC 4648 Base32 encoder and decoderHex to TextHex ↔ UTF-8 text conversion with flexible inputSSL CheckerQuick TLS health check: cert issuer, expiry, SANs, HSTSXML FormatterFormat or minify XML safely in your browser
YAML FormatterFormat YAML with safe local parsingHTML FormatterFormat HTML source without rendering it
JSON Schema ValidatorValidate JSON data against local schemasJSON to ZodGenerate Zod schemas from sample JSONJSON to C#Generate C# classes from sample JSON
JSON to JavaGenerate Java classes or records from JSONTOML to JSONConvert TOML config files to JSONJSON to TOMLConvert JSON objects to TOML config textENV File ParserParse .env files with masked values by defaultJSONPath TesterTest JSONPath expressions safely in browserXPath TesterTest XPath queries against XML or HTML locallyHTML Entities Encode / DecodeEncode or decode HTML entities as plain textString Escape / UnescapeEscape or unescape strings for common syntaxes
HMAC GeneratorGenerate HMAC digests with masked keysAES Encrypt / DecryptEncrypt or decrypt text with AES-GCM locallyRSA Key GeneratorGenerate RSA key pairs locally with Web CryptoCSR GeneratorCreate certificate signing requests locallyCertificate DecoderDecode PEM or DER certificates locallyCSP GeneratorBuild Content Security Policy headers locally