MotionShine01 / Drop
Choose your video
Drag in the file. It plays from your own disk and never goes online.
Free tool
Video resizer.
Change the size or the shape of a video: 1080p, 720p, square, vertical or portrait. Keep the whole picture with bars, or fill the frame and crop the edges. It runs in your browser, so nothing is uploaded.
This runs in your browser. Your files are never uploaded.
How it works
Three steps, nothing to install.
02 / Pick
Choose a size and a fit
Pick a size, or type your own. Then choose whether to keep everything with bars, or fill the frame and crop.
03 / Save
Resize and download
The video is re-encoded here as an MP4. Play it in the page, then download it.
Questions
Good to know.
Is my video uploaded?
No. It is resized in this tab with your browser, so the file never leaves your Mac.
What is the difference between bars and crop?
Keep everything fits the whole picture inside the new size and fills the rest with black bars. Fill the frame makes the picture cover the whole new size and cuts off whatever sticks out. Stretch changes the shape of the picture, so it is rarely what you want.
Which size is which shape?
16:9 is the wide shape of most screens, 9:16 is tall like a phone held upright, 1:1 is square, and 4:5 is a little taller than wide.
Does it make the video larger?
You can pick a bigger size, but it only stretches the same picture, so it will not look sharper. Going smaller is what this tool is best at.
Does it change the quality?
The video is re-encoded, so there is a small loss, as with any re-encode. The bitrate is set to suit the new size.
Which browsers work?
Current Chrome, Edge and Safari, which can encode H.264 video. The file has to be one your browser can play.