DevTool Box · JSON, URL, Base64, JWT, Hash & Timestamp Developer Tools

DevTool Box

Developer Tools

DevTool Box is a fast, free, browser-based developer toolbox: JSON formatter, URL encoder, Base64, JWT parser, hash calculator, timestamp converter, regex tester, QR code, and more — all processed locally in your browser.

Common Tools

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JSONJSON FormatterFormat, minify, validate, and browse JSON data URLURL Encoder/DecoderURL encode/decode and component encoding B64Base64 Encoder/DecoderEncode and decode Base64 text TSTimestamp ConverterUnix timestamp and datetime conversion

Security & Encoding

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HASHHash CalculatorCalculate MD5, SHA, and other digests JWTJWT ParserDecode JWT Header and Payload IDUUID GeneratorGenerate UUIDs and random IDs QRQR CodeGenerate QR codes and decode QR images

Text & Format

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REGRegex TesterTest regular expression matches DIFFText DiffCompare line-level text differences MDMarkdown PreviewPreview Markdown documents SQLSQL FormatterFormat and minify SQL queries

Debugging Helpers

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IPIP LookupShow the current visitor public IP address CRONCron ParserParse cron expressions and preview next runs CLRColor ConverterConvert HEX, RGB, HSL, and HSV color values UAUser-Agent ParserParse browser, OS, device, and bot signals

Questions or suggestions? Emailwetoolboxsite@outlook.com