Video Resizer | Change Video Aspect Ratio Online

How it works

From upload to export in three simple steps.

1

Upload your video

Add any clip in any current aspect ratio.

2

Pick your aspect ratio

Choose 9:16, 1:1, 4:5 or 16:9, or all of them.

3

Export reframed

AI keeps the subject centered; download clean.

Everything you need in one video resizer

Built-in AI tools that turn raw footage into polished, publish-ready video.

Smart AI reframe

Subject tracking keeps the action in frame.

All key ratios

9:16, 1:1, 4:5 and 16:9 for every platform.

No black bars

Fills the frame intelligently instead of letterboxing.

Batch versions

Export multiple ratios from one upload.

Original quality

Resize without losing resolution, up to 1080p.

Watermark-free on paid

Paid plans unlock clean exports for organic posts or ads.

Made with Nano Banana 🍌

Real AI-generated videos, created in minutes, no shoot required.

Video Resizer, fast, free and AI-powered

Nano Banana's video resizer instantly converts your footage to the right shape for any platform. Going from a 16:9 YouTube video to a 9:16 Reel, or a square feed post to a vertical Story? AI smart-reframe tracks the action and keeps your subject in frame, no awkward black bars or off-center crops.

Resize once and export every ratio you need, up to 1080p; Paid plans are watermark-free with commercial rights (

NBV resizes and exports - you publish yourself. We do not claim CapCut / Premiere full feature-parity, forever-free / unlimited free, Free = commercial + no watermark, auto-upload to platforms, views / viral / subscriber guarantees, or 4K if create claims stop at 1080p. Need cut / split / trim only? See the video trimmer. Need captions, music, timeline or a full browser editor? See the online video editor. Prefer prompt-based AI editing of footage? See the AI video editor. Editing gameplay montages / highlights? See the gaming video editor. Editing for YouTube / TikTok / Instagram / Facebook? See those spokes. Need a brand-new clip from text or a photo instead? See the AI video generator.

Prefer the consumer hub? See the video resizer page.

Who it's for

Repurposing across platforms
Social media managers
Advertisers & media buyers
Creators

Frequently asked questions

Can it convert 16:9 to 9:16 without black bars?

Yes. AI smart-reframe fills the vertical frame and keeps your subject centered, no letterboxing.

Which aspect ratios are supported?

9:16, 1:1, 4:5 and 16:9, all the formats you need for social and ads.

Will resizing lower the quality?

No. Exports keep their resolution up to 1080p.

Can I export several ratios at once?

Yes. Generate multiple versions from a single upload.

Is it free?

No free plan. Plans start at €19.99/mo, cancel anytime. Upgrade on /pricing when you need commercial volume.

Try the Video Resizer free

Create your first video in minutes. Paid unlocks commercial + watermark-free. See /pricing.

Resize my video free

Resize any video for every platform