Free Online Developer Tools
Inspect API data, encode values, debug patterns and generate identifiers. These tools cover common development tasks without sending your input to an application server.
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JSON Formatter & Validator
Format and validate JSON with readable indentation.
Open tool Developer ToolsJSON Minifier
Remove unnecessary whitespace from valid JSON.
Open tool Encoding & ConversionBase64 Encoder & Decoder
Encode and decode UTF-8 text without losing Unicode.
Open tool Encoding & ConversionURL Encoder & Decoder
Encode or decode a URL component safely.
Open tool Developer ToolsUnix Timestamp Converter
Convert Unix seconds, milliseconds and local dates.
Open tool Security & GeneratorsUUID Generator
Generate random version 4 UUIDs using browser cryptography.
Open tool Developer ToolsRegex Tester
Test JavaScript regular expressions and inspect matches.
Open tool Security & GeneratorsJWT Decoder
Inspect JWT headers and payloads locally.
Open tool Security & GeneratorsPassword Generator
Create random passwords with configurable character sets.
Open tool Encoding & ConversionColor Converter
Convert HEX, RGB and HSL colors with a live preview.
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