📐 Resize Video Online
Drop your video here
Resize your video to any resolution — 4K, 1080p, 720p, 480p, 360p, or 240p. Aspect ratio is preserved automatically.
3840×2160
1920×1080
1280×720
854×480
640×360
426×240
Aspect ratio is preserved. Only height is changed, width adjusts automatically.
Video is uploaded, processed server-side, then auto-deleted after 60 min.
How to Change Video Resolution Online
Drag & drop or click Browse. Supports MP4, WebM, AVI, MOV, MKV and more. Max 2 GB.
Choose from 4K, 1080p, 720p, 480p, 360p, or 240p. Aspect ratio is preserved automatically.
Click the download button. Your file is auto-deleted from the server after 60 minutes.
Frequently Asked Questions
Will changing resolution affect quality?
Downscaling (e.g., 1080p to 720p) slightly reduces detail but produces smaller files. Upscaling is not recommended as it cannot add detail that wasn't in the original.
Is aspect ratio preserved?
Yes. Only the height is changed — the width adjusts automatically to maintain the original aspect ratio (16:9, 4:3, etc.).
Which resolution should I choose?
1080p for high quality, 720p for a good balance of quality and file size, 480p for mobile viewing and sharing, 360p or 240p for maximum file size reduction.
Can I upscale a video?
Technically yes, but upscaling a 480p video to 1080p won't add detail — it will just make the file larger. We recommend only downscaling.
What formats are supported?
MP4, WebM, AVI, MOV, MKV, and many more. The output format matches your input file.
Why Change Video Resolution?
Changing video resolution is useful for reducing file size, meeting platform requirements, or optimizing for specific devices. A 4K video downscaled to 720p can be 70-80% smaller while still looking great on most screens.
Common use cases include preparing videos for social media uploads (Instagram prefers 1080p), reducing file size for email attachments, optimizing for mobile viewing, and matching specific display requirements for presentations or digital signage.
Resolution Quick Guide
4K (2160p) is best for large screens and professional production. 1080p (Full HD) is the standard for YouTube, streaming, and general use. 720p (HD) offers good quality at smaller file sizes — ideal for web and social media. 480p and below are best for mobile-first content and maximum compression.