How to Crop a Video on iPhone

Somebody filmed a vertical video and there is a stranger walking through the left third of the frame. Or you shot a whiteboard and half the shot is ceiling. Or Instagram wants a square and you have a 16:9 clip. Whatever brought you here, the fix is already sitting on your phone and it takes about twenty seconds.

I want to lead with that because the search results for this are mostly App Store listings with a free tier that crops one video and then asks for a subscription.

You do not need any of them. Apple put a video crop tool in the Photos app years ago and most people have never noticed it, because it hides behind an icon rather than a word.

The native way, step by step

This works on any recent iPhone with the stock Photos app. No install, no account, nothing to download.

1. Open Photos and tap the video you want to crop.
2. Tap Edit in the top right corner.
3. Along the bottom row of tools, tap the crop and rotate icon. It looks like two overlapping right angles forming a square with the corners cut off.
4. Drag the corner handles of the frame inward until only the part you want is inside the box. You can also drag the video itself around underneath the frame to reposition it.
5. If you need a specific shape, tap the aspect ratio control and pick one. Square, 9:16 and 16:9 are the ones people reach for most.
6. Tap Done.

That is the whole thing. The crop applies to the entire clip from first frame to last.

Nothing you do here is permanent

This is the part worth internalising, because it changes how carefully you need to work. iPhone video edits are non destructive. Photos keeps your original file and stores the crop as a set of instructions on top of it.

Open the same video, tap Edit again, and you will see a Revert button in the corner. Tap it and the original framing comes straight back, weeks or months later. So crop aggressively, look at it, change your mind, crop again. You cannot ruin the source.

The flip side of that design is worth knowing too. Because the edit lives as an instruction rather than a rendered file, the crop only becomes a real cropped video at the moment you share or export it. iOS renders a fresh file at that point.

That is why the share sheet sometimes pauses for a second on a long clip before it hands the video over.

What cropping does to your file size

People often crop hoping the file will shrink. It usually does, since you are keeping fewer pixels, and the drop is roughly proportional to the area you cut away. Chop half the frame and expect something near half the size, give or take, since video compression is not that tidy.

If your actual goal is a smaller file rather than a better frame, cropping is a weak tool for the job. Compression is the right tool and it barely touches how the video looks.

I wrote out the sizes different apps and services will accept in shrinking videos for WhatsApp and other apps, and the email specific limits in compressing a video for email. Crop for framing, compress for size, and do them in that order.

Crop and trim are two different jobs

Half the people searching for a crop actually want a trim. It is worth being precise about the difference, since the tools sit right next to each other.

• Cropping changes the rectangle. It removes parts of the picture at the edges.
• Trimming changes the timeline. It removes seconds from the start or the end.

Trimming lives in the same Edit screen, on the filmstrip along the bottom, and you do it by dragging the yellow handles inward. The full walkthrough with the save-as-new-clip option is in trimming a video on iPhone without an app. Very often what a video needs is both: cut the dead air at the front, then tighten the frame.

Cropping for a specific platform

If you are cropping because a platform demands a shape, pick the ratio from the aspect ratio control rather than eyeballing it with the handles. Getting it exact matters, because every one of these services will crop your video itself if the numbers are slightly off, and it will not ask you which part to keep.

Three ratios cover almost everything you will meet. Vertical full screen video, meaning Reels, Shorts, TikTok and Stories, is 9:16. Square, which still shows up in feed posts and ad slots, is 1:1. Traditional landscape video, which is what YouTube and most players expect, is 16:9. Photos offers all three as presets.

One practical warning. Cropping a landscape clip down to 9:16 throws away most of the frame, and whatever you filmed off centre will not survive. If you know in advance that a video is destined for a vertical feed, film it vertically. No amount of cropping afterwards recovers pixels that were never in the shot.

Where Grabio comes in, and where it does not

Let me be straight about this, because it is the sort of thing a blog post like this usually fudges. Grabio does not crop video. Cropping is native iOS, Apple does it well, and I saw no reason to rebuild something the Photos app already gives you for free.

Grabio is a free Apple Shortcut that sits in your share sheet and picks up the jobs iOS leaves undone. So the useful pattern is to crop in Photos first, then share the result to Grabio for whatever comes next. In practice that is one of these:

• Compress the cropped clip so it fits an upload limit.
• Turn it into a GIF, which is what people usually want after they have tightened the frame on a short reaction clip. The details are in converting a video to a GIF on iPhone.
• Pull the audio out as a standalone file, covered in extracting audio from a video.

It is free, there is no account, and there is no App Store install. Get the Shortcut if that chain of steps is one you run often.

Cropping photos is a different tool with the same name

Worth a sentence, since people land here meaning stills. Photos crops images in the same Edit screen with the same icon, and the aspect ratio presets work identically.

For the specific case of forcing an image into a perfect square for a grid post, I covered the exact taps in cropping a photo to a square for Instagram, including what happens to resolution when you do it.

Two annoyances I will not pretend are fine

The crop icon is genuinely hard to find. It is unlabelled, it sits in a row of similar looking glyphs, and Apple has moved that row around across iOS versions. If you cannot see it, tap through each icon in the bottom row until the frame with corner handles appears.

The second one is that Photos gives you no numeric readout while you drag. You cannot type 1080 by 1080 and have it obey. You get presets and your thumb. For most uses that is fine.

When you need exact pixel dimensions, that is an export problem rather than a crop problem, and for stills I walked through the exact-numbers route in resizing a photo to exact dimensions.

Cropping video on iPhone: FAQ

Can I crop a video on iPhone without downloading an app?

Yes. The Photos app crops video natively. Open the video, tap Edit, tap the crop and rotate icon in the bottom row, drag the corner handles, then tap Done. Nothing needs to be installed.

Does cropping a video delete the original?

No. iPhone video edits are non destructive, so Photos keeps the original and stores the crop as an adjustment. Tap Edit again and use Revert to bring the original framing back at any point.

How do I crop a video to a perfect square?

In the crop screen, tap the aspect ratio control and choose the square preset instead of dragging the handles by hand. That locks the shape exactly, which matters because platforms will re-crop anything that is slightly off.

Will cropping make my video file smaller?

Usually yes, roughly in proportion to the area you cut away, since fewer pixels are being stored. If a smaller file is the real goal, compressing is far more effective and leaves the framing alone.

What is the difference between cropping and trimming a video?

Cropping changes the rectangle by removing picture at the edges. Trimming changes the timeline by removing seconds from the start or the end. Both live in the same Edit screen on iPhone.

Can I crop only part of a video, so the crop starts halfway through?

The Photos crop applies to the whole clip. To change framing partway through, split the video into two clips, crop them separately, and join them in a video editor.