Privacy Policy

We attach great importance to your privacy.

Your files never leave your device

When you corrupt a file here, nothing is uploaded. The corrupted file is produced by your own browser, on your own machine, and the download link points at a file that already exists locally. We never receive your file, so we cannot store it, read it, share it or lose it.

This also means we never learn your file's name or its contents. The only thing that ever influences the result is the file's size, and even that is measured and used entirely on your device — save for the one case described below.

What we do not collect

• No account, name, email address or password.
• No social media trackers.
• Nothing about your file — not its name, nor its contents, nor its size. The single exception is described just below.

The one thing that does reach our server

If you use Save to Dropbox, Dropbox saves the file by fetching it from us rather than from your browser, so we have to be able to produce those bytes again. We do it without ever having seen your file: the link Dropbox is given contains only a size and whether to fill with zeros or with random bytes, and we generate the result on the spot and forget it. There is no upload and nothing is stored.

So that one request does tell us how large the file was. It carries no name, no contents and no address of yours — it comes from Dropbox's servers, not from you — and a size on its own identifies nobody, since it describes every file of that length equally. Downloading normally, or saving to Google Drive, does not involve our server at all.

Analytics and advertising

We use Google Analytics to count visits and see which pages people use. The figures are anonymised and aggregated, so they tell us how many people corrupted a file, never who or what.

The site also carries Google AdSense, which is what keeps the service free. Google sets its own cookies to select ads and cap how often you see them, and its use of that data is governed by Google's own policy. The full list of cookies is on our cookies page.

Neither Google Analytics nor AdSense ever receives anything about the file you corrupted — it never leaves your device to begin with.

Dropbox and Google Drive

You can pick a file from your Dropbox or your Google Drive instead of your device. Those pickers are Dropbox's and Google's own code, and it loads with the homepage whether or not you use it — so if you are signed in to either service, their cookies are read and refreshed along the way. Those cookies belong to them, not to us; our cookies page lists them.

What our host sees

The pages and images of this site are served by our hosting provider, which — like any web server — may record ordinary request information such as your IP address and browser for operational and security purposes. That happens for every page you visit, and — apart from the Save to Dropbox request described above, which is made by Dropbox rather than by you — it never includes anything about the file you corrupted.

If this privacy policy does not answer all your questions, please contact us.