Compress video
Shrink a video file for e-mail, chat or the web — pick a quality level and an optional resolution cap, and the video is re-encoded entirely in your browser with a clear before/after size comparison. Nothing is uploaded, no watermark is added.
Open Compress video →What is the Video compressor?
A free, private tool that makes video files dramatically smaller, entirely in your browser. Drop in an MP4, MOV, WebM or MKV, choose a quality level and optionally cap the resolution at 1080p, 720p or 480p, and the video is re-encoded on your device using the browser's hardware-accelerated WebCodecs engine. A clear before/after comparison shows exactly how much space you saved. Nothing is uploaded, there are no size limits imposed by a server, and no watermark is added — ideal for squeezing a recording under an e-mail or chat attachment limit.
How to use Compress video
- Load a video — Drop the file onto the tool or click to choose it. The original size is shown under the preview.
- Pick quality and resolution — Medium quality suits most uses. Capping resolution at 720p shrinks phone and screen recordings substantially.
- Compress — Click Compress and watch the progress bar — the video is re-encoded locally, so speed depends on your device.
- Compare and download — Check the before/after sizes and preview the result, then download the compressed file.
Frequently asked questions
Is my video uploaded to a server?
No. Compression runs inside your browser with WebCodecs — it works offline and has no upload size limit.
How much smaller will my video get?
It depends on the source. Phone and screen recordings are often generously encoded and can shrink 50–90% at Medium quality; a video that was already tightly compressed will shrink much less.
Will the quality drop noticeably?
Medium keeps videos looking good for sharing and web use. For maximum quality keep High and the original resolution; for the smallest possible file choose Low and 480p.
Why is the output barely smaller (or larger)?
The source was already efficiently encoded at a similar or lower bitrate. Try a lower quality level or a resolution cap — re-encoding cannot shrink a file below the information it actually contains.
Tips
- 720p at Medium quality is the sweet spot for sending screen recordings and phone videos.
- Trim the video first with the Video trimmer — cutting unneeded footage saves more than any codec setting.
- Chrome and Edge use hardware encoding where available, making compression much faster.