VIDEO -> CROPPED · Local tool
Crop Video
Crop a video to a square, portrait or widescreen shape.
Last updated
How do I crop a video for Instagram or TikTok?
Drop the video onto filetity's crop tool and pick a shape: square, 9:16 for Reels, Shorts and TikTok, 4:5 for a feed post, or 16:9 for a normal player. Then choose which part of the frame to keep, since a landscape recording squeezed into portrait has to lose the sides and the interesting part is not always in the middle. The kept region is outlined on the video before you start. Everything runs in the browser tab with nothing uploaded and no watermark. Cropping genuinely changes the picture, so unlike rotating it cannot be a container change and every frame is re-encoded, which takes real time. Both dimensions are kept even, because H.264 stores colour at half resolution and an odd size has no valid chroma plane.
01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Back to you
saved on this device
When you would use this
Situations, not settings.
- A landscape recording that has to go on Reels or Shorts
- 9:16 in one click, then pick whether to keep the middle, the left or the right, since the interesting part is rarely centred.
- Cutting something out of the frame
- A whiteboard, a bystander, or a browser toolbar in a screen recording. Set the exact pixels and everything outside goes.
- A feed post that keeps getting cropped by the platform
- Crop it yourself to 1:1 or 4:5 and you choose what survives, rather than finding out what the platform chose after posting.
How it works / no cloud
A conversion engine, not an upload form.
Cropping changes the picture, so unlike rotating or muting it cannot be a container change and every frame is decoded and re-encoded. The bitrate is scaled by the area you keep rather than held at the source's, so cutting a video in half does not leave it carrying twice the bits per pixel it needs.
- Offline ready
- Installable app
- No file limit queue
Straight answers
No accordion. Nothing hidden.
- Is it free?
- Yes, with no watermark and no page limit.
- Does it need an account?
- No. There is no account system.
- Is my file processed on my device?
- Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- What formats are supported?
- MP4, MOV, WebM and MKV in, MP4 out. Square, 9:16, 4:5 and 16:9 presets, or exact pixels.
- What are the limits?
- Both dimensions are kept even, because H.264 stores colour at half resolution in each direction and an odd size has no valid chroma plane. Enlarging is not offered; a crop only ever removes.
- Does it work on mobile?
- Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Does it work offline?
- Yes, once the page has loaded. The tool keeps working with no network connection.
- Why ratios instead of dragging a box?
- Because almost nobody crops a video to an arbitrary rectangle. What people do is take a landscape recording and make it fit a portrait slot, or square it for a feed, and those are four fixed shapes. Picking the shape and then which part of the frame to keep takes two clicks, where a drag handle takes a fiddly minute and lands on something like 1079 by 1437.
- Which ratio does each platform want?
- 9:16 for Reels, Shorts and TikTok, which fill a phone screen. 1:1 or 4:5 for a feed post, where 4:5 is the tallest a feed will show without cropping it again. 16:9 for anything played in a normal video player. The page names each one so you do not have to remember which is which.
- Why does this take longer than rotating a video?
- Because rotating is a note in the file saying which way up it is, and the picture is copied untouched. Cropping genuinely changes every frame, so all of them have to be decoded and encoded again. That is the difference between seconds and minutes on a long recording.
- Will the file get smaller?
- Usually, because there are fewer pixels to encode and the bitrate is scaled by the area kept rather than held at the source's. Holding it would leave a half-size video carrying twice the bits per pixel it needs, which is a bigger file than the picture justifies.
- Can I crop and also keep the whole picture visible?
- No, and nothing can: those are opposite requests. Cropping removes what falls outside the rectangle. If you need the whole frame inside a different shape, what you want is padding, which adds bars rather than taking picture away, and that is a different operation.
Keep working locally
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