Fix and reshape
Cut the frame down instead of shrinking it
Cropping fills the target shape completely rather than padding it out. Nothing is scaled down, so the result looks deliberate instead of letterboxed.
Processed on your own hardware · never transmitted, never stored
What happens when you drop a file in
The file stays put. Your browser opens it the same way an image viewer would. There is no transfer, which is why there is no upload bar to watch.
An encoder arrives once. The first job on this site pulls down a compiled build of FFmpeg, roughly 30 MB. It is kept afterwards, so every job after the first starts immediately.
Your own hardware does the job. The work happens in this tab, on your processor. A laptop from the last few years handles short clips in well under real time.
The result lands in Downloads. Assembled in memory and handed straight to your browser. Close the tab and every trace of it is gone.
Cropping and resizing are not the same thing
These two get mixed up constantly and produce visibly different results. Resizing keeps everything you filmed and adds black bars wherever the shape does not match. Cropping keeps the shape and discards whatever falls outside it.
For social platforms cropping usually reads better. A square post that fills the frame edge to edge looks like a decision; the same post with bars above and below looks like something nobody checked before publishing.
The cost is the edges. On a centred subject that costs nothing at all. On a wide shot where something important sits near the border, it can remove the reason the shot existed.
Why it crops from the middle
Deciding which part of a frame to keep is a compositional judgement, and judgements need to be seen while they are made. A page cannot show you a draggable preview across an entire timeline, so it takes the centre — which is the right answer far more often than not. When it is the wrong answer, that is the point at which an editor becomes worth opening.
Common questions
Does quality drop?
The video is re-encoded, so slightly. At the default setting the difference 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.
How is this different from the Instagram resizer?
That one pads with black and keeps your whole frame. This one discards the edges and fills the shape.
Is the file uploaded?
No, all of it happens in this tab.