Resize and crop video
Change the resolution, crop out parts you don't want, trim the start and end, and save as MP4 or WebM. Vertical 9:16 and square sizes in one click.
Drop a video here
or
Video MP4 · MOV · WebM
How it works
- Add a videoDrop a video or click Choose file.
- Crop and trimUse Crop to remove parts that shouldn't show, and drag the timeline ends to keep the part you need.
- Pick a size and saveChoose a preset or drag the frame, then save as MP4 or WebM.
Common sizes
| Use | Ratio | Size (px) |
|---|---|---|
| Vertical video for Shorts, Reels and TikTok | 9:16 | 1080 × 1920 |
| Landscape video like YouTube (Full HD) | 16:9 | 1920 × 1080 |
| Landscape video (HD, smaller file) | 16:9 | 1280 × 720 |
| Square feed post | 1:1 | 1080 × 1080 |
| Portrait feed post | 4:5 | 1080 × 1350 |
Frequently asked questions
Are my files uploaded to a server?
No. Everything happens inside the browser you're using right now. Your videos and images are never sent anywhere or stored.
Conversion is slow.
In recent versions of Chrome, Edge and Safari, ClipSize uses your device's video hardware to convert quickly. Older browsers fall back to recording while the video plays, which takes as long as the video itself. Try opening the page in an up-to-date browser.
Does it work on phones?
Yes, in an up-to-date mobile browser. Long high-resolution videos can run out of memory on phones, so a computer works better for those.
Is it free? Does it add a watermark?
It's free to use, and no watermark is added to your files.