Free browser utilities
Developer Tools
Format, encode, decode and generate common developer data safely. No account and no server upload required.
JSON Formatter and ValidatorBeautify, minify and validate JSON safely.JavaScript BeautifierFormat or safely minify JavaScript without executing it.CSS BeautifierBeautify or minify CSS with indentation controls.HTML BeautifierFormat HTML as inert text without injecting it into the page.SQL FormatterFormat SQL with dialect and keyword-case options.Base64 Encoder and DecoderEncode and decode UTF-8 text or local files.URL Encoder and DecoderEncode URL components or decode encoded text.JWT DecoderInspect JWT headers, payloads and timestamps locally.Unix Timestamp ConverterConvert Unix timestamps and dates in UTC and local time.UUID GeneratorGenerate cryptographically secure UUID v4 values.
Private browser-based developer tools
These tools use browser APIs and client-side JavaScript. Your selected files and generated output stay on your device. Large or complex files may take longer on mobile hardware, so use the documented limits and review generated results before production use.
Developer Tools FAQ
Do these tools upload my data?
No. Tool calculations and geographic file processing happen locally in your browser.
Can I use them on a phone?
Yes, although large image and SVG operations are usually faster on a desktop.
Are generated results guaranteed to be perfect?
No. Color extraction, SVG tracing and generated design values are practical outputs or suggestions that should be reviewed for your use case.