Krex AI

Generation language

Default language for AI-written scripts, TTS voiceovers, and captions. You can still override per-job.

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AI Expand (Outpaint)

Extend an image beyond its edges to fit a new aspect ratio, generating believable surroundings instead of cropping the subject.

AI Expand grows an image past its original borders so it fits a new shape. Instead of cropping in, it paints outward to give you more room around the subject.

What it does

You point AI Expand at an image and a target aspect ratio, and it generates believable surroundings beyond the original edges. A square photo can become vertical for Reels or wide for a banner, all without cutting off the subject. The new areas are filled to match the existing lighting, texture, and content.

How to use it

  1. Open AI Expand and upload the image you want to extend.
  2. Choose the target aspect ratio, such as vertical, square, or wide.
  3. Set which directions to extend so the subject stays where you want it.
  4. Generate the expansion and review how the new edges blend with the original.
  5. Regenerate if a section looks off, then save the result when you're happy.

Tips

  • Leave the subject off-center if you want the extra space to fall on one side.
  • Expand in smaller steps for big size changes so the generated areas stay coherent.
  • Works best when the original edges have simple, continuable backgrounds.
  • Need to keep the same size but recompose instead? Use Resize & Reframe.

Ready to extend an image? Get started or reframe for a platform with Resize & Reframe.