100% Local Tool

Transform text

Transform text: uppercase, lowercase, capitalize, camelCase, reverse and much more, instantly.

100% Local Tool

Transform text

Runs 100% in your browser — nothing is uploaded.

Local-First Philosophy

Your files stay at home. By pure architecture.

I designed Nua Convert with a very simple golden rule: the best way to protect your files is to never have them. That's why all processing is executed 100% in your browser using modern JavaScript, Canvas, and WebAssembly APIs.

The server only sends you the web page to load. Once you're inside, you can disconnect from the internet if you feel like it: the workspace will continue to function perfectly locally. No tricks, no catches, no strings attached.

Web vs Desktop

Use the web for the quick tasks. Download the App for the heavy lifting.

The browser is great for everyday tasks like optimizing a PNG, formatting code in a pinch, or compiling a quick PDF. But if you need to convert gigabytes of video, transcode entire music folders, or compress giant files, the Nua Convert desktop app leverages every core of your processor to the max, without the memory limits imposed by Chrome or Firefox tabs.

Nua Convert Web

Your pocket Swiss Army knife in the browser

Ready Instantly
  • Basic image conversion (WebP, PNG, JPG)
  • Parsing of JSON, CSV, YAML, XML with auto-detection
  • Fast code formatter and minifier
  • Lightweight PDF generation from images
  • Video and audio conversion (MP4, MP3, WAV...)
  • Batch processing without browser memory limits
  • Heavy files without web tab memory limits

Nua Convert Desktop

All the local power of your computer

Free Download!
  • Everything from the web version, offline and instantly
  • Local Video conversion (MP4, MKV, AVI, WebM...)
  • Massive local Audio conversion (MP3, WAV, FLAC, M4A...)
  • Batch processing of entire folders with a single click
  • No size limits (process files over 50GB locally)
  • Advanced file compression (ZIP, TAR, GZ, 7z)
  • Native integration with the explorer context menu
  • Color translator, Hash, Word count and integrated utilities
  • And much more!