Convert any video to 4K at 3840 x 2160, keeping the original aspect ratio. Free, in your browser.
Drag and drop a file, or click to browse. Files up to 500 MB.
The resolution is pre-set to 4K (3840 x 2160). Pick another in the panel if you change your mind.
Create a free account to download the resized file, or keep editing in REQO.
4K is four times the pixels of 1080p, which matters for large screens, for footage you plan to crop into later, and for anything being archived. It does not make a 1080p source sharper: upscaling can only stretch detail that is already there.
The honest use for a 4K export is a 4K source. If your recording came out of a phone or a camera at 2160p, exporting at 4K preserves it. If it came from a 1080p screen recording, you are quadrupling the file size for nothing.
| Resolution | Pixels | Best for |
|---|---|---|
| 4K | 3840 x 2160 | Native 4K sources, big screens, archiving |
| 1080p | 1920 x 1080 | The default for uploads and sharing |
| 720p | 1280 x 720 | Email, chat apps, smaller files |
| 480p | 854 x 480 | Hard size limits and rough previews |
You can export at 4K, but it will not add detail. The picture is stretched, the file gets roughly four times heavier, and on a big screen it looks softer than a native 4K source.
Four times the pixels needs several times the bitrate to look clean. If size is the problem, export 1080p or run the file through the compressor.
No. The source aspect ratio is preserved, so nothing is stretched or cut. To change the shape of the frame, use the crop tool instead.
Yes. Resize and preview for free, then create a free account to download.
Video
Convert any video to 1080p at 1920 x 1080, keeping the original aspect ratio. Free, in your browser.
OpenVideo
Convert any video to 720p at 1280 x 720, keeping the original aspect ratio. Free, in your browser.
OpenVideo
Convert any video to 480p at 854 x 480, keeping the original aspect ratio. Free, in your browser.
OpenREQO is a full browser video editor: record, edit by transcript, caption and export.