Online Tool Store
Video Resizer
Resize a video to a common preset or custom resolution, with padded, cropped, or stretched fit modes, encoded entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
How the video resizer works
- Choose a video, then pick a preset resolution (or enter a custom width and height).
- Choose how the video should fit the new frame — padded, cropped, or stretched.
- Click Resize video — FFmpeg re-encodes it to the exact target dimensions directly in your browser.
FAQ
What’s the difference between the three fit modes?
"Fit whole video" scales the video down to fit inside the target size and pads any leftover space with black bars, keeping the entire frame visible. "Fill frame" scales up and crops the edges so there's no padding, which can cut off parts of the picture. "Stretch" forces the exact size without cropping or padding, which can distort the picture if the aspect ratios don't match.
Why choose a preset instead of a custom size?
The presets cover the most common targets — standard web/YouTube resolutions, and square or vertical formats for social media — so you don't need to remember exact pixel dimensions. Custom size is there for anything more specific.
Does resizing reduce file size too?
Usually, yes — a smaller resolution generally produces a smaller file, though the exact size also depends on the video's content and length. Use our Video Compressor if file size, not dimensions, is your main concern.
Is my video uploaded anywhere?
No. Resizing runs entirely in your browser using a WebAssembly build of FFmpeg — the video is never sent to Online Tool Store or any other server.
How we compare
| Feature | Online Tool Store | Clideo | HandBrake (desktop app) |
|---|---|---|---|
| No install required | ✓ | ✓ | Desktop app install |
| File never uploaded to a server | ✓ | Uploads to server | ✓ |
| Free, no watermark | ✓ | Free tier watermarked | ✓ |
For a quick, private way to resize a video to a common preset without installing software or uploading anything, the Online Tool Store Video Resizer does it right in your browser.