Converters
Video Converters
MOV, MP4, WebM, MKV and GIF — convert and compress video. · 16 tools
iPhone MOVs, MKV downloads, WebM screen recordings and old AVIs all need to become MP4 sooner or later. Where the video inside is already H.264, these tools simply re-wrap it — seconds, no quality loss. Where it is not, the browser’s hardware encoder does the conversion on your device.
Legacy formats (AVI, WMV, DivX) cannot be decoded by browsers natively, so those pages load FFmpeg as WebAssembly and convert on your device — slower, but still private. GIF creation, compression and format changes for modern files use the browser’s own hardware encoders.
To MP4
From MP4
MP4 to WebMOn-deviceMP4 to smaller WebM (VP9/Opus) for websites.MP4 to GIFPopularOn-deviceVideo clip to an animated GIF with trim and size controls.GIF to MP4On-deviceAnimated GIF to a much smaller MP4 video.MOV to GIFOn-deviceiPhone/QuickTime video to a looping GIF.WebP to GIFOn-deviceAnimated WebP to a GIF that plays everywhere.
Edit & optimise
Compress VideoPopularMake a video small enough for email, WhatsApp or uploads.Video ConverterAny video format to any other, with codec options.Compress MP4On-deviceMake an MP4 smaller for email, WhatsApp or upload.Video TrimmerPopularCut a clip out of a video by start and end time.Crop VideoPopularOn-deviceCut a video frame to square, vertical or a custom region.MP3 to MP4On-deviceAudio file to an MP4 video with a still background.GIF CompressorPopularOn-deviceShrink an animated GIF by size, frame rate and colours.
How to choose
- Sharing and uploading
- MP4 with H.264 video is the safe answer for every platform. Use Compress Video to hit an attachment limit.
- Short clips for chat
- MP4 to GIF makes an autoplaying loop; GIF to MP4 does the reverse and shrinks big GIFs 5–10×.
- Your own website
- WebM (VP9) is 20–40 % smaller than MP4 and plays in all browsers; serve it with an MP4 fallback.