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Dev Converters

Developer converters, fully offline in your browser.

chromeedgebraveoperafirefox🔒 Zero telemetryVersion 1.0.0
Download the extension for ChromeDownload the extension for Firefox

Description

A single popup with the converters a developer uses every day: format/validate/minify JSON, Base64 and URL encode/decode, epoch ↔ date, cron humanizer, live regex tester with group highlighting, read-only JWT decode, UUID v4 and SHA-256. Everything runs locally: no data leaves the browser, zero telemetry.

Features

  • JSON: format, validate, minify
  • Base64: UTF-8 safe encode/decode
  • URL: encode/decode
  • Epoch ↔ date (ISO 8601, UTC and local)
  • Cron humanizer (5 fields)
  • Regex tester with groups and named groups
  • JWT decode (read-only)
  • UUID v4 and SHA-256

Privacy

100% local processing in your browser. Zero telemetry: no data is sent to external servers.

Required permissions

  • clipboardWrite

Screenshots

Dev Converters

Supported browsers

chromeedgebraveoperafirefox