How Nolo works

Short answer: Nolo sends the tool to you instead of asking you to send your file to it. Every tool runs in your browser, on your device, using WebAssembly and your device's own processor, graphics chip and media hardware.

What happens when you use a tool

1. Your browser downloads the page and the tool's code from nolotools.com, the same way it loads any website.
2. You choose a file. The browser reads it into the page's memory. It is not sent anywhere.
3. The tool processes the file on your device and gives you the result as a download.
4. A copy of the result is kept in Your files, encrypted, for 60 minutes. Then it is deleted automatically.

Why the page cannot leak your files

Every Nolo page carries a strict security policy that tells your browser it may only talk to nolotools.com. Even if someone tried to add code that sends data elsewhere, the browser would block it. And nolotools.com itself only serves pages: it has no address that accepts uploads.

We do not use analytics scripts, advertising, cookies or third-party fonts. Like every website, our network provider sees which pages are requested (not your files) to deliver them and keep the site safe.

Working offline

Nolo saves its pages on your device after your first visit. Each tool saves its engine (for example the PDF or video engine) the first time you use it, and shows its size beforehand. After that you can switch off Wi-Fi or mobile data and keep working. The green Offline-ready dot at the top shows when this is set up.

Your files on this device

Results are encrypted with AES-256 using a key that your browser creates and cannot export. They are kept for 60 minutes so you can download them again, then deleted automatically. Delete all at the top of every page destroys the key and every stored file at once. Honest note: this protects against someone reading your disk later; it cannot protect against malware already running on your own device.

Questions