Scrawlspace › Image Tools

Instagram Post Resizer

Resize any photo to Instagram's 1080×1080 square post size, or switch to portrait or story size in one click.

How to use Instagram Post Resizer

  1. Drop a photo here or choose a file.
  2. It's cropped to fill 1080×1080, centred. Pick Post, portrait 4:5 or Story / Reel from the Size for list for other shapes.
  3. Choose the format; JPEG suits photos.
  4. Download the image.

Frequently asked questions

What is the best size for an Instagram post?

1080×1080 for a square post, or 1080×1350 for a 4:5 portrait that takes up more of the feed. Stories and Reels are 1080×1920.

Will Instagram crop my photo?

Not if it's already the right size. This tool crops it to the exact size first, so you know what will be shown.

Can I use it on my phone?

Yes. It works in mobile browsers: choose a photo from your gallery and download the result.

Is my photo uploaded?

No. Everything happens in your browser.