Question 1

Is this free?

Accepted Answer

Yes, completely free, with no sign-up and no limit on how many videos or how many times you use it.

Question 2

Is my video uploaded to a server?

Accepted Answer

No. Every operation on this site runs entirely on your device using your browser's built-in WebCodecs API — your video is never uploaded anywhere.

Question 3

Do I need to install anything?

Accepted Answer

No. Every tool runs directly in your web browser using the WebCodecs API — there's nothing to download or install.

Question 4

Is there a limit on file size or how many times I can use these tools?

Accepted Answer

No hard limit, though very large videos (300MB+) may be slow since everything runs in your browser's memory rather than on a server.

Question 5

What video formats are supported?

Accepted Answer

MP4 (H.264/AAC) and WebM (VP9/Opus) as both input and output for now. Support for more formats like MOV is planned.

Question 6

Does this work on mobile?

Accepted Answer

It works wherever your browser supports the WebCodecs API — currently strongest on desktop Chrome/Edge/Firefox; mobile browser support varies and is improving.

Question 7

How is this free?

Accepted Answer

Because all processing happens in your browser, there's no server cost per file. The site is supported by advertising rather than charging per use.

Frequently asked questions