Cookies usage

We use Google Analytics to understand how this site is used, and it stores a couple of cookies in your browser to do so. The homepage also loads Dropbox's and Google's file pickers, which bring cookies of their own.

Why

In order to provide the best service, we use analytics to understand how visitors behave. For example, suppose we notice that many people leave the site without actually using it — we would investigate why, and eventually make the service easier to use. These figures are anonymised and aggregated: we have no idea who you are, and we never learn anything about the file you corrupted.

Advertising

This service is free to use. It still takes effort and money to create, update, maintain and run, so the site carries Google AdSense — without ads, there would be no free service. Google may set cookies to choose which ads to show you and to limit how often you see the same one.

Picking a file from Dropbox or Google Drive

The homepage offers to take a file from your Dropbox or your Google Drive. Those buttons are provided by Dropbox and by Google, and their code loads as soon as the page opens — before you have decided whether to use them. If you are already signed in to either service, that code can read the cookies you have with them and set new ones. There are a lot of them, and they are not ours: they belong to Dropbox and Google, and we can neither see nor control them.

Using a picker tells us a file's name and its size, and nothing else: the file itself is never downloaded or uploaded. What happens to those two details is set out in our privacy policy.

What is stored

• _ga and _ga_FGWQWJQ0JE — set by Google Analytics to tell returning visits apart from new ones.
• __gads and similar — set by Google AdSense for ad selection and frequency capping.
• Cookies from www.dropbox.com, such as __Host-js_csrf and __Secure-dbx_consent — set by the Dropbox picker.
• Cookies from apis.google.com and accounts.google.com, such as NID and __Secure-3PSID — these are your existing Google session cookies, sent and refreshed when the Google Drive picker loads.

There are no social media trackers, and since your files are corrupted entirely inside your browser, there is no session to keep track of. Two honest caveats: if you pick a file from Dropbox or Drive, that service naturally knows which file you chose, since it is the one handing it over — and if you use Save to Dropbox, our server is told the size it has to generate. Both are explained on the privacy policy page.

You can read more on our privacy policy page, or about how Google handles this data on Google's own site.