Video Compressor
Shrink a video by lowering its resolution and bitrate. Enter a target size and the quality is calculated to fit, with the estimated size shown up front.
Add a video to see its details and a preview.
Compression settings
How to use
When it helps
Email attachments are usually limited to about 25MB, and chat apps and work tools all have upload limits. A 4K phone video can be over 300MB per minute, which makes it hard to send as is.
Video file size is roughly bitrate times length. This tool lowers the resolution, sets a bitrate and re-encodes. For videos watched on a phone, 720p at 1 to 2Mbps looks sharp enough. With a target size, the bitrate is calculated from the video length for you.
The actual result can differ from the estimate by 10 to 20% depending on how much movement the video has. If your limit is tight, enter a slightly lower target.
FAQ
Why does compressing take so long?
The video is played once and recorded again, so it takes about as long as the video. In return, your video is never uploaded.
The result differs from the estimate.
Browser encoders aim for the average bitrate you set, so calm videos come out smaller and busy ones a little larger.
The result is bigger than the original.
This can happen if you set a higher bitrate than an already well-compressed original. Lower the bitrate or resolution.
Does the aspect ratio change?
No. The video is scaled by its short side with the ratio kept. It is never enlarged beyond the original.
Does it work on phones?
It works in recent Chrome and Safari. Keep the screen on and stay on this tab while it compresses.