- Ubahin
- Compress
Compress video online: smaller file, still great to watch
Lower the resolution and choose a quality level to shrink a video, for example so it fits in a chat or an email. The estimated result size shows before you start.
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What makes a video smaller?
The two biggest factors are resolution and quality. Going from 1080p to 720p usually cuts the size a lot with little visible difference on a phone screen. The "Small" or "Tiny" levels increase compression, while "High" keeps the detail.
Trimming parts you do not need and lowering the frame rate help too. The final result always depends on the footage, so the estimate in Ubahin is a rough guide, not a promise.
Three simple steps
Add your video
Drag or choose the video you want to shrink.
Lower resolution and quality
Try 720p at Small quality first. Watch the estimated size under the settings.
Compress and compare
When it finishes, Ubahin shows how many percent you saved. Play the result before downloading.
What you can set
Estimated size and time
Visible before you start, so you can adjust the settings first.
Trim before compressing
Parts you cut are not processed, so it is faster and smaller.
Mute if you do not need sound
Removing the audio trims a little off the size and the time.
Private
The video never leaves your device, so it is safe for personal recordings.
Frequently asked questions
Why is converting video slower than extracting MP3?
Extracting audio (MP3) is light work and usually finishes in seconds. Converting video means re-encoding every frame, and that is done by your device's processor, not by a server. As a rough guide, 480p to 720p video takes about one to two times its duration. Choosing a smaller resolution, the "Fast" speed, or trimming to the part you need makes it faster.
What is the maximum file size?
We set no limit, but browsers have memory limits. As a guideline, up to about 500 MB is comfortable on a laptop and up to about 200 MB on a phone. Larger files can make the browser run out of memory; trim first or use a more powerful device.
Will the sound or picture quality drop?
Converting to a lossy format (MP3, MP4) means compressing again. At the Good or High settings the difference is usually hard to notice. Raising the bitrate or resolution above the original does not improve the result, and Ubahin never upscales resolution. For full-quality audio, choose FLAC or WAV.
Will the result be exactly the estimated size?
Not exactly. The final size depends on the footage (motion, detail, noise). The figure in Ubahin is a rough estimate and is marked with "±".
Are my files uploaded to a server?
No. Conversion runs in your browser using a WebAssembly build of ffmpeg, so your files are never sent to Ubahin's servers. The only thing your browser downloads is the conversion engine (about 7 MB, once, then cached). If you use the Link field, the file is fetched directly from its source into your browser.
Does it work on phones?
Yes, in current versions of Chrome, Edge, Firefox and Safari on Android and iPhone. The interface is designed for touch screens. For large videos, a laptop is faster and safer.
There is a lot more you can do
Try it now, no sign-up
Drop a file in the box above and see the result in seconds. Your file stays on your device.
Start converting