Online video compressor

How to compress a video online

1. Drop your video on the box or click it to choose one: MP4, MOV, WEBM, MKV or M4V.
2. Choose Quality (smallest file, balanced or best quality) or a Target file size in MB, and optionally a lower resolution.
3. Press Compress video. A progress bar shows how long it will take.
4. Watch the result, check the new size and download it.

Compress a video to a specific size

Choose Target file size and enter the limit, for example 10 MB for Discord without Nitro or 25 MB for most email attachments. The tool works out the bitrate from the length of the video so the file ends up just under the limit. Very long videos cannot fit in a very small size with good quality; lowering the resolution to 720p or 480p helps a lot.

Which settings to choose

• Balanced keeps the picture sharp and usually makes phone videos 50–80% smaller.
• Smallest file is good for sharing in chats and email when size matters more than detail.
• Resolution: 1080p is plenty for most screens, 720p for phones and chats, 480p for the smallest files. Phone videos are often 4K, so lowering the resolution saves the most space.
• Remove sound for screen recordings or clips where audio is not needed.

Formats and iPhone videos

The result is an MP4 file (H.264 video and AAC audio), which plays on every phone, computer, TV and website. iPhone videos in MOV format are converted to MP4 at the same time. If your browser cannot create MP4, the tool makes a WebM file instead and tells you.

No upload, no waiting in a queue

Most online video compressors upload your file to a server first, which takes a long time for big videos. Here the video never leaves your device: your browser decodes and re-encodes it with your computer's or phone's own video encoder (WebCodecs). This is private, works with large files and is often faster than uploading.

Tips

• Keep the tab open and visible while it works; phones may pause pages in the background.
• On a phone, very long or 4K videos can take a while. A computer is faster.
• If a video will not open, it may use a codec your browser cannot decode. The latest Chrome, Edge or Safari reads the most formats.

Frequently asked questions

Is there a file size limit?

There is no upload limit because nothing is uploaded. Very large files depend on the memory of your device.

Will the quality drop?

Some detail is removed to make the file smaller. With Balanced at the original resolution the difference is hard to see; you can compare by watching the result before downloading.

Does it work on iPhone and Android?

Yes, in current versions of Safari and Chrome.