Privacy
Your files never leave your device. Patching, patch creation and checksum calculation all run inside your browser, so no ROM or patch is ever uploaded to a server. There is no account system and no file storage, because the site has nothing to store your files on.
Your files
Every operation on this site runs client-side. When you select a ROM, the browser reads it into memory on your own machine. Patching happens there, in a Web Worker, and the result is written back out as a download. No part of that involves the network.
You can verify this yourself. Load the page, switch off your internet connection, and patch a ROM. It works, because there was never a server involved.
What is collected
- No accounts, no sign-ups, no email addresses.
- No ROM, patch or checksum data, since none of it reaches a server.
- Aggregate visit statistics through Google Analytics: which pages are viewed, rough geography, and what kind of device and browser you use.
- Standard web server request logs may record IP address and user agent, as they do on essentially any website.
Third parties
Google Analytics is the only third party this site loads, and it is used to see which pages people find useful. It sets cookies and reports page views to Google.
It has no access to your files. Analytics measures page visits; the patching and hashing happen in a separate part of the page that never hands it any data. Your ROM is not readable by it, and neither is your patch.
The patching engine itself is served from this site rather than a third-party CDN, so using the tool involves no request to anyone else’s server.
Frequently asked questions
Are my ROMs uploaded when I patch them?
No. Patching runs entirely in your browser. The file is read into memory on your device, modified there, and saved back as a download. Nothing is transmitted.
Can I use this offline?
Yes. Once the page has loaded, you can disconnect from the internet and keep patching. All the code needed is already in your browser.
Do you store the patches I create?
No. Patch creation compares two files in your browser and hands you the result. Neither the inputs nor the output reaches a server.
Do you use cookies or analytics?
Google Analytics runs on this site to count page views, and it sets cookies. It has no access to the files you select, since patching and hashing happen locally and never pass anything to it. Blocking it leaves every tool fully working.