Free video resizer

How do I resize a video?

Add the video above, pick the platform it’s for or type a custom size, and choose how the video should fill the new frame. The tool scales it on your device and gives you an MP4 or WebM to download. Scaling a 4K or 1440p recording down to 1080p or 720p is the most common job: the file gets much smaller and still looks sharp at the size it’s watched.

Video sizes for each platform

Recommended sizes as published by the platforms at the time of writing. They change from time to time, so check the platform’s help page for anything critical.

When the shape changes: fill or fit

A 16:9 video resized to 1280 × 720 keeps its shape. When a platform wants a different shape, for example a landscape recording for a vertical Short, something has to give. Squashing the picture is never right, so the resizer offers two honest options:

Crop to fill always keeps the center. To choose which part stays, crop first with the video cropper, then resize the result here.

What resolution does a help-center video need?

Less than most people export. A video embedded in a help article or documentation page is usually shown about 700 to 900 pixels wide. A 1080p file is plenty, and 720p is often enough for a simple interface. Viewers can still go full screen, where 1080p holds up well for interface text.

What matters more than resolution is that the text in the recording is legible. A tip: record at your normal screen size, then scale down here. Recording a small browser window often makes text sharper than recording a huge 5K screen and shrinking it a lot.

Why resize a video at all?

• Smaller files. Half the width and height is a quarter of the pixels. Going from 4K to 1080p shrinks a video dramatically, often more than any quality setting would.
• Upload limits. Some platforms, LMSs and help desks cap resolution or file size.
• Smoother playback. Smaller videos start faster and stutter less on slow connections and older devices.
• Consistency. A course or a docs site looks tidier when every video has the same size.

Upscaling: what it can’t do

Making a video larger than it was recorded adds pixels but no detail, so a 720p clip scaled to 1080p looks no sharper. Only scale up when a platform rejects a small size; otherwise keep the original resolution.

Tips

Resize, then compress

If you also need a specific file size, resize first and then use the video compressor with a target size. Fewer pixels let the same file size carry a sharper picture.

Mind the even numbers

Video encoders need widths and heights divisible by two. The tool rounds a custom size to the nearest even number, so it may differ from what you typed by one pixel. Custom sizes go up to 3840 pixels a side.