KOENJA

Compress video

Set a target size or a quality level, and the video is re-encoded to MP4 to match.

Drop a video file here

Choose fileor paste with Ctrl + V

MP4 MOV WEBM MKV AVI

Files are processed in this browser. They are not uploaded to a server.

How to use

  1. Drop a video file in the area above. The original resolution, length and bitrate are shown.
  2. Target size mode sets the output file size in MB. Use it when sending to places with upload limits (chat apps, forums, email).
  3. By quality mode lets you pick a quality level, and the size follows from it.
  4. Lower the resolution if needed, then click Start compression.

Tips for good results

  • A target size that is too small makes the picture blocky. For a 1-minute video, about 15 MB for 720p and 30 MB for 1080p works well.
  • If the target size is small, lower the resolution too. At the same size, 720p often looks sharper than 1080p.
  • This tool encodes in the browser, so it is slower than desktop software. Videos longer than 10 minutes take a long time.

FAQ

The result is bigger than the original.
This can happen when the original is already compressed efficiently. Set a smaller target size or lower the resolution.
Compression is very slow.
Set the encoding speed to Fast. It is 2 to 3 times faster, but quality drops a little at the same size.
The output size is a little off the target.
The video is encoded in a single pass, so the size can differ from the target by a few percent. If the limit is strict, set the target a little lower.

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