DEV · 13 tools
Developer Tools
Format, validate, encode, and decode tools. Every tool runs in your browser, so nothing is uploaded.
JSON FormatterFormat, validate, and beautify JSON.Developer ToolsJSON ValidatorCheck whether JSON is valid and see parse errors.Developer ToolsBase64 Encode/DecodeEncode plain text to Base64 or decode Base64 text.Developer ToolsURL Encode/DecodeEncode URLs or decode URL-escaped text.Developer ToolsTimestamp ConverterConvert Unix timestamps to readable dates and back.Developer ToolsNEWJWT DecoderDecode JSON Web Token headers and payloads and check expiry times.Developer ToolsNEWUUID GeneratorGenerate random v4 or time-ordered v7 UUIDs in bulk.Developer ToolsNEWRegex TesterTest regular expressions with live match highlighting and capture groups.Developer ToolsNEWJSON to TypeScriptGenerate TypeScript interfaces from a JSON sample.Developer ToolsNEWYAML to JSON ConverterConvert YAML to JSON and JSON to YAML.Developer ToolsNEWNumber Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal.Developer ToolsNEWColor ConverterConvert colors between HEX, RGB, and HSL with a live preview.Developer ToolsNEWHTML Entity Encode/DecodeEscape special characters as HTML entities or decode entities back to text.Developer Tools