Video Compressor — Reduce Video File Size
Make videos small enough to share, upload, or email. Compress to a target size or quality level, entirely in your browser.
How to compress a video
- 1
Select your video
Drop in an MP4, MOV, WebM, or MKV file. It opens directly in your browser.
- 2
Choose how to compress
Pick a quality level, or enter the file size you need in MB. Lower the resolution for even smaller files.
- 3
Compress and download
The video is re-encoded on your device. Compare the before and after size, then download the MP4.
Frequently Asked Questions
Is this video compressor free?
Yes. It is free with no account, no watermark, and no limit on how many videos you compress.
Is my video uploaded to a server?
No. Your file never leaves your device — compression runs locally in the browser using WebCodecs, so it also works for private videos.
How much smaller will my video get?
It depends on the video. Phone recordings and screen captures often shrink a lot, while videos that are already heavily compressed shrink less. Lowering the resolution gives the biggest savings.
How accurate is the target file size?
The tool calculates the bitrate needed to hit your target from the video length. The result is usually close to the target but can differ slightly, because encoders adjust the bitrate to the content.
What format is the compressed video?
An MP4 file with AAC audio. H.264 video is used whenever your browser can encode it, which covers almost all modern browsers.