Compress a video
Create a smaller MP4 from a practical short clip using fixed quality presets suited to browser processing.
Compress video →Private video tools
Free video tools with local processing
Convert or compress practical short video clips directly in your browser. The source remains on your device while a local media engine creates the new download.
Choose a video workflow
Convert to MP4
Turn WebM, MOV, or AVI input into a broadly compatible MP4 file.
Convert WebM to MP4 →Convert MP4 to WebM
Create a WebM copy for browsers, web publishing, or workflows that prefer the open container.
Convert MP4 to WebM →Create a GIF from video
Turn a short MP4, WebM, or MOV clip into an animated GIF for simple sharing and embedding.
Convert MP4 to GIF →All private video tools
- WebM to MP4 Turn WebM screen recordings, browser captures, and downloaded clips into MP4 files that players and editors accept more consistently. This browser converter is best for short clips because HD transcodes can run around real time or slower depending on the device.
- MOV to MP4 Make MP4 copies from iPhone and camera .mov footage. Many H.264 or HEVC MOV files with AAC audio convert near-instantly as a container change; other files need a full re-encode, so short clips are the realistic target.
- AVI to MP4 Modernize short legacy AVI files as MP4 for phones, websites, and editors. AVI to MP4 requires a full re-encode here, so expect patience for anything beyond a small clip.
- MP4 to WebM Create WebM versions of short MP4 clips for web embedding and browser-first publishing. The VP8 settings favor speed, so quality can drop compared with slower offline encodes.
- Compress Video Shrink short clips to MP4 with fixed quality presets. No upload.
What to expect from browser video conversion
Video processing uses ffmpeg compiled to WebAssembly. The media engine downloads into the browser, then reads and writes files in local browser memory.
Short, web-sized clips work best. Long or high-resolution videos can require substantial memory and processing time, so a desktop video editor may be better for large projects.
Want the technical details? See how local browser processing works.