DevLooms
Fast developer utilities — format, convert, validate.
All tools run in your browser. No sign-up. No data sent to servers.
Featured tools
- JSON FormatterFormat and validate JSON with pretty-print and error reporting.
- Regex TesterTest regular expressions in real time with match highlighting and replace preview.
- Base64 Encode / DecodeEncode text to Base64 and decode Base64 to text. Handles Unicode safely.
- Unix Timestamp ConverterConvert between Unix timestamps (seconds/milliseconds) and human-readable dates in local and UTC.
- JWT DecoderDecode JWT header and payload to inspect claims. No signature verification in V1.
- JSON to CSV ConverterConvert JSON array of objects to CSV with configurable delimiter.