Free Online Video Resizer

Resize your videos like a pro—quso.ai’s online video resizing tool makes it easy to resize videos quickly and easily. No software installation required – just upload your video, adjust the dimensions, and resize video for Instagram, YouTube, Facebook, Twitter and other social media.

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Trusted by 4M+ Creators

Resizing your video is now a click away with quso.ai online video resizer

Social Media Presets

Stop guessing platform dimensions—quso.ai’s video resize presets make resizing effortless. From YouTube’s 16:9 to TikTok’s 9:16, adjust aspect ratios like a pro, saving time and making your videos platform-perfect.

Scale your video clip

Zoom in, zoom out, or frame it just right—quso.ai lets you tweak your video’s focus with precision. Drag, scale, and center your video clip so your subjects stay in the spotlight.

Trim video to the preferred length

Cut the fluff and keep the gold. Use quso.ai’s timeline tool to trim your video to the perfect length. Whether you’re highlighting key moments or creating a short reel, precision is just a click away.

Auto-resize videos

Keep your speakers in the spotlight, no matter where they move. With AI speaker detection, quso.ai tracks and frames the action so the focus stays exactly where it should. Perfect for interviews, presentations, and content that demands seamless viewing.

Resize for socials

Resize a video for Instagram, TikTok, Facebook Reels, YouTube, YouTube Shorts, X (Twitter), and LinkedIn with our simple tools. Easily switch between vertical and landscape formats. Our user-friendly editing tools make resizing your videos for social media a breeze.

Preserve video output quality

Resize without losing clarity. With quso.ai, you can adjust resolutions—720p, 1080p, and beyond—while keeping your video crisp. No pixelation, no compromise, just professional results every time.

How to Resize Your Videos with AI Video Resizing Tool

Import Your Video

Upload any MP4, MOV, MKV, or paste YouTube Link to quso.ai—no manual formatting needed.

Auto‑Resize with AI

AI video resizer analyzes your clip and intelligently expands or crops content to your chosen aspect ratio—wider, taller, or square—without losing key subjects.

Fine‑Tune Your Layout

Adjust framing, zoom, and padding with simple selection. Switch between landscape, portrait, or square for perfect social‑ready formats.

Download or Share

Export your resized video instantly or publish it directly to Instagram, TikTok, YouTube, LinkedIn, and more—ready for any platform.

Frequently Asked Questions

What is a free software to change video aspect ratio?+

quso.ai offers a free online tool to resize videos with various aspect ratios for different social media platforms. You can easily modify the height, width, and aspect ratio of your videos to perfectly fit LinkedIn, Twitter, YouTube, YouTube Shorts, Instagram, TikTok, and Facebook.

How can I resize a video?+

To resize your video using quso.ai: 1. Upload: Start by uploading your video online. Click on 'New Project' to begin. 2. Resize: Navigate to the 'Size' dropdown menu under 'Settings' to select the appropriate dimensions. Choose from options like landscape (16:9), portrait (9:16), or square (1:1) to fit your platform.‍ 3. Export: Once you're satisfied, click on 'Download' to download your resized MP4 video.

How to resize MP4 video file size?+

You can resize the video file size using quso.ai by adjusting the resolution and format settings during export. Our tools ensure that changing the resolution does not compromise video quality, allowing you to choose from preset resolutions like 720p and 1080p.

How can I resize a video without losing quality for free?+

Resize your video without losing quality using quso.ai's online tool. Our AI-powered aspect ratio changer and video resizer preserve the original quality while adjusting the aspect ratio, ensuring your video looks professional and polished.

Can I use AI to add width to a video?+

Yes, you can use quso.ai to add width to a video and customize it further as per your requirements.