How it works

Your browser opens the file, does the job and hands the result back, and we never upload your files.

What happens when you use a tool

  1. You choose a file, and the browser reads it from your disk into memory on your device.
  2. The tool's code, already downloaded with the page, processes the file locally with JavaScript and WebAssembly.
  3. The result is built in memory and offered as a download. Close the tab and everything is gone.

Why it is built this way

Contracts, IDs and invoices are sensitive, so our tools process files in your browser and we never upload them. There is no account to sign up for either.

What to expect from local processing

Speed and capacity depend on your device. Phones have less memory than laptops, so large or image-heavy files may be slow there. Heavier tools, such as text recognition, may download extra components the first time you use them.

Explore the tools