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Compress Video to Size

Set a size in MB and get an MP4 that fits, with its sound. Your video stays on this device.

Size goal

Services change their limits, and some email services count attachments as about a third larger. If a file is refused, try a smaller size.

Your video is compressed by this browser and never uploaded. Keep this tab open while it works.

Files over a few GB, or many videos at once? WhyUpload Desktop is coming

How to compress a video to a size in MB

  1. 1. Add your videoChoose an MP4, MOV or M4V from your device. It stays on your device.
  2. 2. Pick a size goalUse Email 25 MB, WhatsApp or Discord, or set your own size in MB.
  3. 3. Download your MP4When it finishes, play it here to check it, then save it.

Your files stay on your device. This tool does its work in your browser, and your files are never uploaded.

Common questions

Is my video uploaded?

No. Your browser compresses it with your device’s own video encoder. Nothing is sent anywhere.

Will it really fit the size I pick?

Yes when it is possible. The tool tests your video first, then compresses and checks the result. If a video is too long for the size, it tells you the smallest size that would work.

What happens to quality and sound?

Sound is kept. The picture is made smaller when that looks better than squeezing it at full size. The output is H.264 and AAC in an MP4, which plays almost everywhere.

How big a video can I compress?

That depends on your device: the limit is shown above the drop zone. Very large files, or batches, are a better fit for the WhyUpload desktop app when it is ready.

Which browsers and formats work?

Current Chrome, Edge and Safari, with MP4, MOV and M4V files. A browser cannot compress video without video encoding support, and MKV, AVI and WebM files are not supported here yet.

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