Fix and reshape
Crop a video to the shape you need
Cuts the frame down rather than shrinking it, so the result fills the whole shape with no black bars. The crop is taken from the centre.
Files are processed on your device · nothing is uploaded, stored or logged
How it works
Pick your file. The browser reads it straight from disk. There is no upload progress bar, because there is no upload.
The encoder loads once. A WebAssembly build of FFmpeg, around 30 MB, downloads the first time you use the site and stays cached afterwards.
Your processor does the work. Everything happens in this tab, at roughly half of real time on a modern laptop.
Save the result. The finished file is assembled in memory and handed to your downloads folder.
Cropping versus resizing
These two get confused constantly and produce very different results. Resizing keeps the whole picture and adds black bars where the shape does not match. Cropping keeps the shape and throws away whatever falls outside it.
For social platforms, cropping usually looks better. A square post that fills the frame reads as deliberate; the same post with bars top and bottom reads as an afterthought.
The trade is that you lose the edges. On a centred subject that costs nothing. On a wide shot where something important sits near the frame edge, it can cut the point of the shot away.
Why the crop is centred
Choosing which part of the frame to keep is a compositional decision that needs to be seen while it is made. A browser tool cannot show you a draggable preview across a whole timeline, so it takes the middle — which is right far more often than not. When it is wrong, an editor is the right tool.
Common questions
Will the video lose quality?
It is re-encoded, so there is a small loss. At the default setting it is not visible in normal viewing.
Can I choose which part to keep?
No, the crop is centred. That covers most footage; off-centre subjects need an editor.
What is the difference from the Instagram resizer?
That one pads with black bars and keeps your whole frame. This one cuts the frame down and fills the shape.
Do my files get uploaded?
No. Everything happens in this tab.