Private video resizer

Video Resizer and CropperResize videos for every social format

Crop, pad, and export videos for TikTok, Reels, YouTube Shorts, Instagram, and landscape uploads. Your source file stays on your device.

9:16 verticalCrop or containSafe-zone previewMP4/WebM export

Open Resizer Generate 9:16 AI influencer videosStart with the right format

Video resizer

Choose a target ratio, preview the fit, and export a social-ready video.

Drop a video here

MP4, MOV, WEBM, MKV, AVI, M4V, OGV, and OGG files are supported.

Browse files

Target ratio

1080 x 1920

Fit mode

Background

Preview

9:16 export with crop to fill

Choose a video to preview

The target canvas, safe-zone overlay, and resized output will appear here.

Short-form presets

Resize videos for TikTok, Reels, Shorts, Instagram feed posts, square posts, and landscape uploads.

Crop or pad

Fill the frame with crop, preserve the whole video with a blurred background, or use a clean solid background.

Safe-zone preview

Preview common vertical app UI zones so faces, captions, and product details stay away from risky edges.

Private export

Your source footage stays on your device while the resized export is prepared.

How it works

A simple resize workflow for turning one clip into multiple social formats.

Choose a video

Drop a video into the workbench. The tool shows file size, duration, resolution, and orientation before export.

Pick a ratio and fit mode

Choose 9:16, 1:1, 4:5, 16:9, or original ratio, then choose crop, contain with blur, or contain with a solid background.

Preview and export

Check the safe-zone preview, export, and download the resized MP4 or WebM.

Use cases

Resize source clips for publishing, testing, and AI creator workflows.

Turn landscape clips into vertical Shorts

Crop or pad existing footage into 9:16 exports for TikTok, Reels, and YouTube Shorts.

Prepare UGC ads for multiple placements

Create 4:5, 1:1, and 9:16 variants from the same source clip for paid social and organic testing.

Keep the full frame visible

Use contain mode when you need every part of the original video preserved in a new format.

Pair resized clips with creator workflows

Resize source material before extracting frames, pulling audio, compressing exports, or generating new AI creator videos.

Start in the right format

Generate 9:16 AI influencer videos

Resizing fixes footage after the fact. MakeInfluencers lets you create vertical AI creator videos that are already shaped for TikTok, Reels, and Shorts.

Generate 9:16

FAQ

Common questions about resizing and cropping videos online.

Does this video resizer upload my video?

No. Your source video stays on your device and is not uploaded to MakeInfluencers.

Which aspect ratios can I export?

You can export 9:16 vertical video, 1:1 square video, 4:5 portrait video, 16:9 landscape video, or keep the original aspect ratio.

What is the difference between crop and contain?

Crop fills the chosen format and trims edges if needed. Contain keeps the full video visible and fills empty space with either a solid color or a blurred background.

Can I resize videos for TikTok, Reels, and YouTube Shorts?

Yes. Choose the 9:16 preset for vertical short-form videos. The preview includes a safe-zone overlay to help you keep important action away from common app UI areas.

Will resizing reduce quality?

Any re-encode can affect quality. The export settings are tuned for clear social uploads, but very low-resolution source files may look softer when scaled up.

Can I use it on mobile?

Yes. Smaller clips work best on phones and tablets; large video exports can be slow or memory-heavy.

What output format does it create?

The tool tries to create an MP4 first. If MP4 is unavailable, it falls back to a WebM file.

Resize video online for TikTok, Reels, Shorts, and Instagram

A video resizer is useful when the same source clip needs to work across different social platforms. A 16:9 landscape video may need a 9:16 version for TikTok, a 4:5 version for Instagram feed, and a 1:1 version for square placements.

Crop mode fills the selected format, while contain modes preserve the whole frame and fill the extra space with either a blurred background or a solid color. The preview helps you check the result before export.

After resizing, use the video compressor to reduce file size, the audio extractor to pull the soundtrack, or the final frame extractor to grab a still for continuation workflows.

Related Tools

Video Utility