Video Resizer
Video resizer: Resize and crop videos for any platform in your browser. Set aspect ratio, resolution, and dimensions for Instagram, TikTok, YouTube, and more.
Drop a video to resize
or click to browse
Input: MP4, MOV, WebM, MKV, and other formats your browser can read
How to Use Video resizer
Upload Your Video
Drop any common video file (MP4, MOV, WebM, MKV, and more) onto the page. Your file stays on your device for the whole process — nothing is sent to our servers.
Choose Your Dimensions
Select a platform preset (Instagram, TikTok, YouTube, X / Twitter, LinkedIn) or enter custom width and height. When aspect ratios differ, pick crop-to-fill to center the frame, or fit-with-letterbox to keep the entire picture with black bars required.
Download Your Resized Video
Select Export. Processing runs in your browser with WebCodecs (H.264) for broad compatibility. Choose Standard download or Premium download when the export is ready.
Key Features
Platform Presets
One-click targets for Reels, Shorts, YouTube, square 1:1, 4:5 feed, X/Twitter, LinkedIn, and more — each sets width, height, and aspect for you.
Crop or padding
When ratios don’t match, choose crop-to-fill (no letterboxing) or fit-with-letterbox (keep the full frame with bars).
High-quality re-encode
Resizing uses a full re-encode path in the browser (WebCodecs) so the output is tuned for the target size — not a rough stretch in the player alone.
Custom width & height
Set exact pixel dimensions for non-standard or internal deliverables, not just social presets.
Common questions
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