Video compressor

How to compress a video

1. Tap Choose a video and pick a video from your gallery or files.
2. Choose Pick a quality for a generally smaller file, or Fit under a file size when the app you are sending to has a limit.
3. Read the estimate under the settings. It shows the size and resolution you will get.
4. Press Compress video and keep the page open while it works.
5. Play the result to check it, then press Save video or Share.

What the settings do

Pick a quality

Each setting chooses a bitrate, which is the amount of data spent on every second of video. For a vertical Full HD video (1080 × 1920) at 30 frames per second the three settings work out as follows.

A phone camera usually records Full HD at 12 to 20 Mbps, which is 90 to 150 MB per minute, so all three are a large saving. If your video is already below these bitrates the tool lowers its target so the result still comes out smaller.

Fit under a file size

Type a size, or tap one of the common ones. The tool divides that size by the length of your video to get a bitrate, then picks the largest resolution that still looks reasonable at that bitrate. A one minute video has about 2 Mbps to work with under 16 MB, which is enough for 720p. A five minute video under 16 MB has to drop to a much smaller picture.

Video encoders cannot hit a size exactly, so the tool aims 3% under your target. If the result still comes out over, press Try again smaller and it runs once more with the bitrate corrected.

Resolution

Automatic keeps your resolution when the bitrate allows and steps down when it does not. Choose a fixed resolution if you know what you need. The tool never enlarges a video, because that adds size without adding detail.

Limit to 30 frames per second

This appears for videos recorded at 60 frames per second. Halving the frame rate lets each remaining frame use more data, so the picture is cleaner at the same size. Leave it off for sports or anything where smooth motion matters more.

Good to know

• Files it reads: MP4, MOV, M4V, 3GP, MKV and WebM, which covers what phones, cameras and screen recorders produce.
• File it makes: an MP4 with H.264 video, the format nearly every phone and app accepts.
• Sound: copied across unchanged. It is a small part of the file, usually 1 to 2 MB per minute.
• HDR video: comes out as standard video, so very bright highlights can look flatter.
• Browsers: Chrome and Edge, on Android and on computers. Other browsers built on the same engine, such as Samsung Internet, generally work too. A browser that cannot re-encode video will say so when you choose a file.
• Speed: depends on the length and resolution of the video. The progress bar shows an estimate once it has started.

If you only need to remove the start or end, use the video trimmer first. A shorter video needs less compression to reach the same size.

Questions

Will compressing reduce the quality?

Yes, slightly, every time. Compression works by discarding detail that the eye is least likely to miss. Balanced is tuned so the difference is hard to see on a phone screen. Small is visibly softer, and is meant for when getting the file through matters most.

Why is my result a little over the size I asked for?

An encoder is given a bitrate to aim for, and busy scenes can push it over. The tool aims 3% under your target to allow for this. When a result still lands over, the Try again smaller button reruns it with a corrected bitrate.

The result is not smaller than my original. Why?

The original was already compressed to about the level you asked for. This is common with videos received through chat apps, which have been compressed once. Choose Small or a lower resolution, or keep the original.

My video still looks blurry after I post it. Is that this tool?

Usually not. Chat and social apps compress every video again after you send it. Why videos look blurry after upload explains what you can and cannot control.

Which videos may I compress?

Videos you recorded, or ones you have permission to use. The tool works on files you already have. It does not fetch videos from other websites or apps.

Last reviewed 10 October 2026.