Add your file from your device.
01Video & Streaming toolVideo or media file
Video Resizer
Resize a video to 1080p, 720p, 480p or 360p, keeping aspect.
100% FreeBrowser-basedNo watermark
- 1UploadAdd your file from your device.
- 2Choose optionsPick the output settings you need.
- 3ProcessRun the tool in your browser.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.
How to use Video Resizer
Pick the output settings you need.
02Run the tool in your browser.
03Save the finished result.
04Your files stay private
Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.
Learn more about privacyA 4K recording of a screen share is mostly wasted data — the detail is not there to preserve, but the pixel count still has to be stored, uploaded and decoded by whoever watches it. Dropping the frame size is often a bigger, safer saving than squeezing the bitrate.
What Video Resizer does
Scales the video to a target height and works the width out from the source aspect ratio, so nothing is stretched or cropped. Scaling uses lanczos, which is slower per frame than the alternatives and noticeably sharper on text and fine detail — the right trade when someone chose to downscale deliberately.
The width is always forced even, because H.264 requires it. A 1440×1080 source scaled to 720p becomes 960×720, not 959×720.
Resolutions and method
| 1080p | Full HD, 1920 wide at 16:9 |
|---|---|
| 720p (default) | HD, 1280 wide at 16:9 |
| 480p | SD, 854 wide at 16:9 |
| 360p | Small, 640 wide at 16:9 |
| Scaler | Lanczos — sharper than bilinear on text |
| Aspect ratio | Preserved; width derived and forced even |
| Output | MP4 (H.264 + AAC) |
| Maximum input | 2 GB |
Detailed steps
- Drop the video in.
- Pick a Resolution. 720p is the sensible default for anything being watched rather than archived.
- Resize, then download.
Worth knowing
Resize before compressing, not after. File size scales with pixel count, so halving the height quarters the pixels — a 1080p to 540p change removes about 75% of the data before the encoder makes a single quality decision. Then compress the smaller file if it still needs to be smaller.
Frequently Asked Questions
Should I resize or compress?
Resize when the frame is bigger than anyone needs — a 4K screen recording watched on a phone. Compress when the resolution is right but the bitrate is generous. Doing both, in that order, gives the smallest file for a given visual quality.
Can I make a video larger?
You can select a height above the source, but do not — upscaling invents pixels from nothing, producing a bigger file that looks softer than the original. The tool will not stop you; physics will.
What happens to a vertical or square video?
The height you choose is applied and the width follows from the source ratio, so a 1080×1920 vertical clip set to 720 becomes 405×720. To change the shape rather than the size, use the Vertical Reframe tool.
Why lanczos rather than something faster?
Because downscaling is where sharpness is won or lost. Lanczos preserves edge detail that bilinear softens, and it matters most on exactly the content people downscale — screen recordings, slides, anything with text.
Is Video Resizer free?
Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.
Are my files uploaded?
No. Video Resizer runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.
Do I need to install anything?
No. Video Resizer works in any modern browser on desktop, tablet or phone. Open the page and start.
How often can I use it? Is there a daily limit?
On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.
Recently viewed
Your video is processed entirely in your browser. The video engine downloads once from a CDN the first time you run a tool, then works from cache. Large files are memory-bound, so keep clips reasonable.