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Free tool

Crop a video to the shape you need

Lock the box to 9:16 for Reels, 1:1 for the feed, 4:5 for the taller feed slot, or drag it freehand. The crop is exact pixels, not a guess from a preview.

Your file never leaves this tab. It is read, edited and written by your own browser, so nothing is uploaded and nothing is stored.

Why this one

What this tool gets right

Ratio locks that hold

Pick 9:16 and the box stays 9:16 from every handle. A crop that drifts by a few pixels is what makes a platform re-crop your video after you post it.

Drag or type

Drag the box for the framing, then read off exact X, Y, width and height. Type them instead when you are matching a spec.

Rule of thirds on the box

Guides sit inside the crop while you drag, so a face or a product lands where you meant it to rather than dead centre by default.

Crop plus everything else

Crop and resize in one pass: pull a 9:16 window out of a landscape source and land it on exactly 1080 by 1920.

How it works

Three steps, about thirty seconds

01

Drop the file in

Choose a file or drag it onto the page. It opens straight away, because there is nothing to upload.

02

Set it up

Drag the handles or type exact numbers. The preview applies the same operations in the same order the encoder will.

03

Export and download

Your machine does the encoding, with a real progress bar. The file lands in your downloads folder, unmarked.

Cropping for vertical without ruining the framing

Pulling a 9:16 window out of a 16:9 source throws away about two thirds of the width. Whatever you keep has to carry the shot on its own, which is why the guides matter: put the subject on a third rather than in the middle, and the crop reads as a deliberate vertical shot rather than a landscape one with the sides missing. If the action moves across the frame, one fixed window will not hold it. A single crop is the right tool for a static shot, an interview or a product on a table. For a moving subject you want a real editor with a keyframed pan.

The sizes the platforms actually want

Reels, TikTok and Shorts are 9:16, usually delivered at 1080 by 1920. The Instagram feed takes 1:1 and 4:5, with 4:5 taking the most vertical space in the scroll. YouTube is 16:9 at 1920 by 1080 or better. Crop first to fix the shape, then resize to fix the pixel count. Doing it the other way round means you resize pixels you are about to throw away.

What this tool will not do

  • It will not fetch a video from YouTube, TikTok, Instagram or any other platform. You have to have the file.
  • It will not repair a corrupt or partially downloaded file. If a player cannot open it, neither can this.
  • It will not add anything to the picture: no captions, no logos, no filters. It edits the file you brought.
  • Speed is your hardware. A long 4K clip on a phone will take minutes where a laptop takes seconds.

Questions, answered

Yes, and it has to. Cropping changes the pixels in every frame, so each one is decoded, cut down and compressed again. Set the quality you want under Output before you export, and expect it to take longer than a trim.
No. The box is clamped to the frame, because there is nothing outside it. If you want padding around a smaller video, resize with the letterbox fit instead.
Rotation happens first, then the crop, both here and in the preview. So drag the box on the rotated picture you can see, and that is exactly what you get.
No. The file is opened by your browser with the File API and rewritten with WebCodecs, the same video machinery your browser uses to play a video. Nothing is sent to a server, so there is no upload wait, no queue and no copy of your file sitting in someone's storage bucket.
There is no limit we impose. The practical ceiling is your machine: the file is read in small pieces rather than loaded whole, so multi-gigabyte sources open instantly, and if you turn on 'write straight to disk' the result never has to fit in memory either. On a phone, expect long clips to be slow.
None of the three. Because the work happens on your machine, this costs us nothing to run, so there is nothing to gate. You get the file you made, unmarked.
Anything current: Chrome, Edge, Safari 17 and up, and Firefox 130 and up. The tools use WebCodecs, so a very old browser will report that it cannot encode, rather than producing a broken file.
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