Comprimi video
MP4 più leggeri
Informazioni su questo strumento
Shrink large video files for email, messaging, web upload, or storage - without sending them to a stranger's server. Compression runs in your browser via FFmpeg compiled to WebAssembly, the same engine that powers most professional video tools and the back-ends of nearly every video-sharing site you've ever used.
Phone-shot 4K clips often weigh 100-300 MB per minute, which most email providers reject outright and most chat apps refuse to send at full quality. The balanced preset typically gets a 60-70% reduction with almost no visible quality loss, which is the difference between a video that won't send and one that arrives without fuss.
Browser-based video work has caught up surprisingly well in the last few years. A modern laptop or recent phone will compress a five-minute 1080p clip in roughly the same time it would take to upload it to an online converter and download the result. The advantage is that the file never leaves your device, so there's no upload, no queue, no retention policy, and no question about who can see it.
Funzionalità
- MP4, WebM, MOV, MKV and AVI input
- MP4 (H.264) or WebM output for maximum compatibility
- Quality presets (high / balanced / small)
- Optional resolution downscaling (4K → 1080p, 1080p → 720p, etc.)
- Audio kept in sync automatically
- Progress bar with live FFmpeg log
- Works offline once the page is loaded
Come si usa
- Drop a video onto the page.
- Pick a quality preset - balanced is right for almost every use case.
- Optionally downscale the resolution for an even smaller file.
- Wait while FFmpeg processes locally - the progress bar shows the FFmpeg log if you want to follow along.
- Download the compressed file.
Tutto avviene all'interno del tuo browser con JavaScript e WebAssembly. I tuoi file non vengono mai caricati su un server, mai memorizzati e mai visti da noi.
Domande frequenti
Online tools use beefy GPU servers and parallel hardware encoders. Your browser uses your CPU through software encoding - slower for big files, but completely private and free. For a typical phone clip the wait is usually shorter than the upload would have been.
The balanced preset gives roughly 50-70% smaller files with very little visible difference. Small is more aggressive and is best for content where some softness is fine, like talking-head clips. High is for archival use - it shaves redundant bytes off without obvious loss.
Apple still doesn't ship native WebM support on iOS. Use MP4 (H.264) output if the file needs to play on iPhones, iPads, or in Safari without extra apps.
Yes, but it's the slowest case and uses the most memory. If your machine struggles, downscale to 1080p first - viewers almost never notice on phone screens, and the file becomes a quarter of the size.