Privacy Policy

Your files

Videos and images you choose are processed entirely in your browser, on your device. They are not uploaded to Sizefit or to any server we run. We cannot see them, and we do not keep copies. When you close the page they are gone.

Compatibility mode

Some browsers cannot use the fast built-in video encoder. In that case the page downloads an open-source encoder (ffmpeg compiled to WebAssembly) from a public content delivery network. Your file is not sent there. The network can see the usual request details, such as your IP address, as with any file download.

What we store on your device

We save one preference in your browser's local storage: light or dark theme. It never leaves your device.

Hosting and logs

The site is served by a static hosting provider. Like any web host, it may keep basic technical logs such as IP address, browser type and the pages requested, for security and reliability.

Advertising and cookies

This site is supported by advertising. When ads are switched on, our advertising partners, including Google, may use cookies or similar technologies to show ads and measure them. They may use information about your visits to this and other sites to show ads that are relevant to you, depending on your region and choices. In regions where the law requires it, we ask for your consent first. You can manage personalised ads in your Google ad settings, and you can block or delete cookies in your browser settings. Ads are currently not enabled on this site.

Analytics

We do not currently use analytics. If we add privacy-friendly or other analytics, we will describe them here.

Children

This service is not directed at children under 13, and we do not knowingly collect personal information from them.

Developer API interest list

If you enter your email on the API page, we store it with the sign-up date, only to tell you when the API opens. Your files are never involved. Ask us to delete it any time.

Your rights

Apart from that optional list, we hold no personal data about you, so there is usually nothing to access or delete. If you have questions or requests, write to gpowertools@proton.me.

Changes

If we change this policy we will update the date below.

Last updated 2026-11-09.