Resize & Crop Video

Resize & Crop Video changes the size and shape of a clip. Make a big phone video smaller (1080p, 720p or 480p), turn a landscape clip into a 9:16 vertical one for Reels, TikTok or Shorts, make a square or 4:5 post, or cut away the edges with a crop box you drag over the picture.

When the new shape is different from your video, you choose how to fill it: crop to it (you move the box to keep the important part), fit the whole picture with blurred bars made from the video itself, fit it with plain bars in any colour, or stretch it. The preview shows each choice on a real frame of your video, and you can play or scrub through it before saving.

The new video is saved as an MP4 with H.264 picture and AAC sound wherever the browser can write them, which plays almost everywhere. Browsers that can’t write them save a WebM with VP9 instead, and the page says which before you start. Sizes are always rounded to even numbers, as video players expect.

Everything happens in your browser, on your own device. The video is never uploaded, so private clips stay private, and there is no sign-up or watermark.

1. Tap “Choose a video” or drop one onto the box. MP4, MOV, WebM and MKV all work.
2. Under “What to do”, pick Resize to choose a new size (or “Custom size…” to type one), or Crop to cut the edges with a box.
3. If the new shape differs from your video, choose Cropping, Blurred bars, Colour bars or Stretching, and drag the box on the preview to keep the part you want.
4. Leave “Keep the sound” on, or untick it for a silent video.
5. Press “Resize video” (or “Crop video”), check the result as it plays on the page, then press “Download video”.

• Standard sizes (1080p, 720p, 480p) that keep the video’s shape, plus custom width and height with a “Keep shape” lock.
• Social frames in one tap: 9:16 (1080×1920), 1:1 (1080×1080), 4:5 (1080×1350) and 16:9 (1920×1080).
• A crop box you can drag and resize with mouse, touch or arrow keys, with Free, 16:9, 9:16, 1:1, 4:5 and 4:3 shapes.
• Fit with blurred bars made from the video itself, or plain bars in any colour you pick.
• A live preview that plays and scrubs, painted with the same code that makes the real video.
• Saves MP4 (H.264 + AAC) where the browser can, otherwise WebM (VP9 + Opus), and says which up front.
• Keeps the sound, or drops it if you untick “Keep the sound”.
• Progress bar with time left, a Stop button, and before-and-after sizes when it finishes.

• For Reels, TikTok and Shorts, 1080×1920 is the size those apps show best. Blurred bars keep the whole shot; cropping fills the screen but loses the sides.
• Making a video bigger than it was doesn’t add detail. The page warns you when a size is larger than the original.
• Use “Crop” with “Then: Scale to 720p” to cut away a black border and make the file smaller in one go.
• Pick a bar colour that matches your brand or the app’s background for a tidy look.
• Long 4K clips take a while and a lot of memory. On a phone, trim the video first and resize the part you need.