Crop to 9:16 for TikTok and Reels, 4:5 for Instagram, square, 16:9 or any shape, by dragging a box over your video. No upload, no account, no watermark: your video never leaves your device.
Reading your video…
Drag the box on the video to choose what's kept.
Free, no watermark, no account. Any size of video.
Three steps, with nothing to install and no account to make. It works in your browser, on a computer or a phone.
Drop a file on the page, or pick one from your phone's videos. MP4, MOV, WebM and MKV all work.
9:16 for TikTok and Reels, 4:5 for Instagram posts, 1:1 square, 16:9 for YouTube, or Custom for any shape. Drag the box over the video to choose what's kept, and its corners to make it smaller.
It's made on your device as an MP4, at high quality, and saved with the original's name: holiday.mov becomes holiday_ohsovideo.mp4.
Every platform has a shape it shows best. A landscape video in a vertical feed plays as a thin strip with empty space above and below it, and a tall phone video on YouTube sits in a narrow column. Cropping cuts the picture to the shape the screen wants, so the video fills it. It's also how you take out what shouldn't be there: a stray microphone, a passer-by at the edge of the frame, the clutter on your desk.
This is the crop most people come for: a video filmed sideways, wanted for TikTok or Reels. Choose 9:16 and the box covers the full height of your video and about a third of its width. Drag it left or right to keep what matters, usually a face or whatever is moving. While you drag, lines divide the box into thirds, to help you place someone's eyes or a horizon.
Two things are worth knowing before you post it:
The other way round works too. From a vertical phone video, 16:9 keeps the full width and a band across the middle, which you drag up or down: from 1080 × 1920 that's about 1080 × 608. A square keeps 1080 × 1080, and 4:5 keeps 1080 × 1350, which is exactly the size Instagram recommends for a portrait post. Leave a little room above people's heads, and remember that a crop to 16:9 from vertical footage keeps less than a third of its height, so it suits a single subject better than a scene.
The pixels you keep aren't stretched or enlarged: the cropped video is exactly what's inside the box, at its own size. Because a crop changes every frame, it has to be saved as a new video, so it's encoded again as an MP4 with H.264, which plays everywhere. We encode it at the same high quality as our compressor's top setting and give it bits for the size of picture you kept: about 0.12 bits per pixel, comfortably above the point where our tests show a difference starting to become visible.
The sound comes too: copied as it is when it's AAC, as on most phones, and made AAC otherwise. The date the video was recorded is kept, so it still sorts in the right place in your photo library. Crop no tighter than you need: a smaller box keeps fewer pixels.
These three are easy to mix up, and they give very different results:
This tool crops. Choose it when the important part of the video is in one place and you want it to fill the screen. If everything in the frame matters, such as a slide or a wide group shot, you may prefer to keep the original shape and let the platform show it with bars.
Crop works in Safari on an iPhone or iPad and in Chrome on Android: choose a video from your gallery and drag the box with your finger. The finished video is saved to your downloads. Cropping makes a new video using your phone's own video hardware, so keep the page open and in front until it's saved, and expect long or 4K videos to be quicker on a computer. Firefox on Android can't make video at all, and says so.
A crop gives your video the shape a platform asks for. Each one also caps the size and length it takes: the file size limits list them, with the size to aim for, and compress video gets it under. Most vertical video is watched with the sound off, so once it's cropped, you can add captions to it as well.
No. The video is cropped by your own browser, on your device, and nothing is uploaded. It works on private videos, and even offline once the page has loaded.
9:16 for TikTok, Instagram Reels, YouTube Shorts and Stories. 4:5 for Instagram and Facebook posts, the tallest a feed shows. 1:1 for a square that looks the same everywhere. 16:9 for YouTube, TVs and presentations. Custom crops to any rectangle, such as 4:3.
Choose 9:16. The box covers the full height of your video, and you drag it left or right to keep the part that matters. The cropped video is 9:16, so it fills a phone's screen.
The kept part is the same pixels, not stretched or enlarged, and it's saved at high quality. Cropping does mean a new copy is made rather than the original copied, but it's very hard to tell apart. A smaller box keeps fewer pixels, so crop no tighter than you need.
Yes. Choose Custom and drag the box's corners and edges to any shape. The size it will be shows above Export, in pixels.
Yes. Cropping changes only the picture. The sound is kept as it is.
Any length and any size of file: the video is read and made a piece at a time. Long 4K videos are quickest on a computer.
Yes, in Safari on iPhone and Chrome on Android: drag the box with your finger. Firefox on Android can't make video, and says so.