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FREE TOOL · ON YOUR DEVICE

Change video aspect ratio to 9:16, 1:1 or 16:9 free

Adapt a landscape video for TikTok or Reels, or a vertical one for YouTube, without cutting anything: the video stays whole over a blurred background. Or crop it to fill the screen.

  1. Add your videos
  2. Choose the format
  3. Download

HOW TO USE IT

Three steps.

  1. Add your videos

    Drop or choose up to 10 MP4, WebM or MOV videos.

  2. Choose the format

    9:16 for TikTok, Reels and Shorts; 1:1 or 4:5 for Instagram; 16:9 for YouTube. Whole with a background or cropped to fill.

  3. Download

    Download each video at 1080p or 720p, or all of them in a ZIP.

NEXT STEP

Keep going with these tools

Face-follow vertical videoFrom 16:9 to 9:16 without cutting people.Crop videoRemove borders or switch to 9:16, 1:1 or 4:5 by choosing the area.Trim videoKeep only the part you want.Compress videoSmaller files for WhatsApp, email or web.Auto subtitlesSpeech to text, SRT, VTT and animated styles.

Video to 9:16, 1:1 or 16:9: common questions

What is the blurred background?

The same video, enlarged and blurred behind, to fill the gaps without black bars. You can also choose a black or white background.

Is my video cropped?

With “Whole, with background” nothing of the picture is lost. With “Cropped to fill” the edges that do not fit the new format are removed.

What resolution is the result?

1080p (for example 1080 × 1920 in 9:16) or 720p, as you choose. On a phone, 720p is faster to process.

Are my videos uploaded to a server?

No. The tool runs inside your browser: videos are read and processed on your device and are not sent to Cocuyo or to any third party. The libraries are served from our own site, with no external services. You can check it in your browser’s network tools: your file is not sent.

Is it really free?

Yes. You can try it before signing up; to download the result we ask for a free account, with no subscription. Your free account comes with 30 welcome uses; after that, each use costs 1 credit (top-ups from US$1), and they are unlimited with Basic or Pro. It never adds a watermark.

What are the limits?

Videos up to 300 MB and 10 minutes that your browser can play (MP4, WebM or MOV), with output up to 1080p. Saving video needs WebCodecs, found in recent versions of Chrome, Edge, Firefox and Safari; if it is missing, we tell you.

Learn how to…

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WHEN YOU WANT TO CREATE

Make new videos with AI.

Cocuyo’s Studio brings 30+ AI models for image, video and voice together. You see the credit cost before generating, and credits never expire.

AI video generator

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