Video compression

Reduce video file size in your browser. Keep the original resolution, choose clearer video or a size limit, and preview before downloading.

Parameters, example and limits

What does video compression trade off?

A smaller video uses fewer bits to represent the picture and audio. Fine text, rapid motion and faces need a visual check even when the export meets a size ceiling. Browser codec support determines which export options are available.

Step by step

Choose a video and check its dimensions and duration. Keep original resolution for a first comparison.
Start with Clearer video, or choose Fit a size limit when the receiving service specifies a ceiling. Enter the ceiling in decimal MB.
Compress, preview the finished file and inspect text, faces, movement and audio. Download only after checking the reported bytes and dimensions.

Choosing the settings

Option	What changes
Clearer video	Starts from a quality goal. It does not promise a particular percentage reduction or a smaller file for every source.
Fit a size limit	Enforces an output byte ceiling. If the tool cannot fit the chosen settings, increase the limit or reduce output resolution.
Resolution and audio bitrate	720p removes picture pixels compared with a 1080p source. Audio shares the file's bitrate budget, so preserve enough for the content you need.

Example and expected result

A 60-second clip with a 5 MB ceiling has 5,000,000 × 8 ÷ 60 = about 666,667 bits/second for the entire file. At 96 kbps, audio alone uses about 720,000 bytes; video and container overhead share the remaining space. This is a planning calculation, not a promised encoded size or quality score.

If it is not working

The compression worker accepts non-empty inputs up to 192 MiB and caps results at 192 MiB. Device memory and decoding support can still prevent processing below that cap.
For an unreadable format, export a browser-playable source first. For memory errors, cancel and try a shorter clip. A disabled codec option is not supported on the current device.
If a size-limited result looks blurred, raise the limit rather than assuming that a passed size check means acceptable quality.