How to compress a video online

Reduce video file size before you share it by email, WhatsApp or Discord, or before you upload it to a website. SkyTooler is a free video compressor for MP4, MOV, MKV, AVI and WebM files up to 1 GB.

1. Click Choose video and select your video file (up to 1 GB).
2. Pick Standard (Recommended) for a good balance, or Smallest Size for the biggest reduction with lower quality.
3. Wait while the video is compressed and keep this page open. Longer videos take more time.
4. Download the compressed MP4 video.

Supported video formats

MP4, MOV, MKV, AVI, WebM, WMV, FLV, 3GP, MPG and more. The compressed video is saved as MP4 with the audio kept.

Tips to compress video

• Start with Standard. Switch to Smallest Size only if the file is still too big.
• High-resolution, high-bitrate recordings from phones and cameras shrink the most.
• If the compressed file would be bigger than your original, we keep the smaller original.
• Need a different format instead? Use the video converter.

Frequently asked questions

Is the video compressor free?

Yes. You can compress videos on SkyTooler for free.

How much can I reduce the size of a video?

It depends on the video. Large high-bitrate files can become much smaller, while videos that are already compressed shrink less.

What is the maximum video size?

You can upload videos up to 1 GB.

Is the sound kept?

Yes. The audio is kept and saved in the compressed MP4 file.

Are my videos stored?

Videos are uploaded over HTTPS, used only for compression and deleted automatically from our servers within 1 hour.