Drop a video here, or click to select
Resize video dimensions and export an MP4 file locally.
Target video width in pixels.
Leave blank to calculate height from the width.
Source Preview
Output Size Preview
Resize video for upload limits, social formats, website previews, or smaller drafts. Leave either width or height blank to scale the other side automatically.
Video resizing changes the frame dimensions, such as turning a 4K clip into 1080p or 720p. Smaller dimensions reduce the amount of data that must be encoded and displayed, which often makes the file easier to upload and play.
Preserving aspect ratio helps avoid stretched faces, squeezed screen recordings, and distorted product demos. Set both width and height only when your target platform requires an exact frame size.
The preview shows the source video and the calculated output frame size before conversion, so you can adjust dimensions without waiting for encoding to finish.
The output is encoded as MP4 for broad compatibility with browsers, phones, presentation apps, and social platforms.
Resizing changes frame width and height. Compression focuses on file size and may keep the original dimensions. Smaller dimensions can also reduce file size, but they are different operations.
Keep aspect ratio enabled and change only one dimension. The other dimension is calculated from the source proportions.
Yes. This page exports MP4 for broad browser, phone, and desktop compatibility.
No. The video is decoded and encoded in this browser tab. Available device memory and performance determine the practical file size.
Related tools: Video Compressor · Video Converter
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