Does the aspect ratio change?

1080p, 720p, 480p and 360p keep the original aspect ratio. Under “Custom”, setting “Keep aspect ratio” to “Free” can change it.

Does making it bigger improve the quality?

No. Going above the original size does not improve the quality and only makes the file bigger.

The original resolution says “Unknown”.

This means the browser couldn't read the size of the video. “Resize” can't be clicked then. Convert the video to a common format like MP4 or MOV and choose it again.

Resize · Pegmo

Resize video

Drop a file here

Lower the resolution or set an exact size. Processed on your device.

MP4·MOV·WEBM·MKV

How to use Resize

What it does

Lower the resolution of a video, or set it to a size you choose, and save it as a new file. Pick 1080p, 720p, 480p or 360p, or type the width and the height yourself. The video is processed on your device and is not uploaded.

Step by step

Drop a video file onto the page, or click to choose one.
Check the size of the video under “Original resolution”.
Under “New size”, choose 1080p, 720p, 480p, 360p or Custom. The default is 720p. The number is the height of the video, and the width follows the original aspect ratio.
If you chose “Custom”, type pixel values into “Width” and “Height”. If “Keep aspect ratio” is on “Keep”, changing one side changes the other to match; on “Free”, you set each one separately. Values go from 2 to 16384 px.
Check the “Expected resolution” and click “Resize”. When it finishes, use “Save” to download the file, or “Keep going” to pass it to another tool.

Good to know

The width and the height are rounded to even numbers. If a calculated value is odd, it becomes the even number just below it.
If you choose a size larger than the original, the notice “This is larger than the original” appears. Scaling up does not improve the quality and only makes the file bigger.
The result is always an MP4 (H.264 video, AAC audio). It is re-encoded, so it is not exactly identical to the original, and it contains only the first video and the first audio track.
When it finishes, the result screen shows how the resolution and the file size changed. The first time, the video engine (about 32 MB) is downloaded.
The file name is the original name followed by “-resized”, for example trip-resized.mp4.

Frequently asked questions

Does the aspect ratio change?: 1080p, 720p, 480p and 360p keep the original aspect ratio. Under “Custom”, setting “Keep aspect ratio” to “Free” can change it.
Does making it bigger improve the quality?: No. Going above the original size does not improve the quality and only makes the file bigger.
The original resolution says “Unknown”.: This means the browser couldn't read the size of the video. “Resize” can't be clicked then. Convert the video to a common format like MP4 or MOV and choose it again.