Your files never leave this device.
Most "free online tools" upload your file to their server, process it there, and keep logs. Momo Tools is built the opposite way: every tool runs inside your browser using local processing (WebAssembly, Canvas, Web Crypto). There is no upload endpoint to send your data to.
| Momo Tools | Typical online tool | |
|---|---|---|
| Where files are processed | On your device | Uploaded to their servers |
| Account required | Never | Often, for "free" limits |
| Works offline | Yes — try airplane mode | No |
| File size limits | Your device's memory | 5–50 MB, pay to raise |
| Watermarks on output | Never | Common on free tiers |
| What we can see | Never your files or inputs | Your files & metadata |
Verify it yourself in 20 seconds
- Open any tool — for example the Image Compressor.
- Turn on airplane mode (or unplug your network).
- Compress an image. It works — because nothing is being uploaded anywhere.
You can also watch the Network tab in your browser's DevTools: no file requests leave the page. Our step-by-step guide shows how to run these checks on any website, and the offline tools list groups every tool that handles files, passwords, IDs or pasted text.
FAQ
If nothing is uploaded, how do the tools work?
Modern browsers are powerful. Image compression uses the Canvas API, PDFs are processed with WebAssembly libraries, hashes use the built-in Web Crypto API. Your CPU does the work — which is also why the tools feel instant.
Does that apply to every tool on this site?
Yes. Files, text, passwords and IDs are all processed locally and never uploaded. Beyond that, the site only requests static resources (pages, fonts, translation dictionaries, ad configuration, a cached exchange-rate table with no personal data) and sends anonymous, cookie-free usage counts — never your inputs. Details are on the privacy page.
How do I verify a tool is not uploading my files?
Two quick checks: (1) turn on airplane mode and confirm the tool still works — if it runs with no network, nothing is being uploaded; (2) open your browser DevTools Network tab while using the tool and confirm no request carries your file. Both work on any site, not just ours.
How does the site make money then?
Through clearly-labelled ads and affiliate recommendations on the page — never by selling data we do not have.