Social Media Video Resizer
Drop a video, preview every social media aspect ratio, adjust the crop, and export — all in your browser.
Drag & drop a video
or click to browse — max 500 MB
Your video never leaves your browser
How to Resize a Video for Social Media
Upload
Drag and drop any video file or click to browse. Supports MP4, WebM, MOV, and more.
Adjust
Preview all four aspect ratios at once. Use the arrow buttons to fine-tune each crop position.
Export
Click export on any preset to download a cropped MP4 ready to upload to your platform.
Frequently Asked Questions
What aspect ratios can I resize my video to?
You can resize to 16:9 (YouTube, Facebook, LinkedIn, Twitter/X), 9:16 (Instagram Reels, TikTok, YouTube Shorts), 1:1 (Instagram Feed, Facebook, LinkedIn), and 4:5 (Instagram Feed). All four previews are generated instantly.
Is this video resizer really free?
Yes, 100% free with no watermarks, no sign-up, and no limits. Your video is processed entirely in your browser — it never leaves your device.
What video formats are supported?
You can drop any video format your browser supports, including MP4, WebM, MOV, and AVI. The exported file is always a standard MP4 (H.264 + AAC) that works everywhere.
How do I adjust the crop position?
Each preview card has arrow buttons that let you nudge the crop area left, right, up, or down. Only the axes that require cropping are enabled — for example, converting a landscape video to portrait lets you move left and right.
Is there a file size limit?
The tool accepts videos up to 500 MB. Larger files may cause your browser to run out of memory since all processing happens locally.
How long does exporting take?
Export time depends on the video length and your device's processing power. The video is re-encoded to MP4 using ffmpeg running in your browser. Short clips (under 30 seconds) typically finish within a few minutes.