If the video is already H.264, it's repackaged without losing quality.

Do my videos leave my device?

No. Videos are processed in your browser, on your device. There's no upload, so even large files start right away.

Is there a size limit?

No limits from us. Long or 4K videos need more memory and time; phones manage smaller files best.

Turn iPhone and QuickTime MOV files into MP4 that plays everywhere.

Drop videos to convertor paste with ⌘V. Your files stay on your device.

MP4MOVWebMMKVAVI

Good to know: If the video is already H.264, it's repackaged without losing quality.
Do my videos leave my device?: No. Videos are processed in your browser, on your device. There's no upload, so even large files start right away.
Is there a size limit?: No limits from us. Long or 4K videos need more memory and time; phones manage smaller files best.

Ready-made settings for common jobs.