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Instagram image sizes and aspect ratios

Instagram Help says photos are shared at up to 1080 pixels wide. A photo between 320 and 1080 pixels wide keeps its original resolution if its ratio is between 1.91:1 and 3:4, which at 1080 wide means 566 to 1440 pixels tall. Drop in an image to see whether Instagram will crop, enlarge or shrink it.

Try it

PlacementSize
Feed photo320 to 1080 wide; ratio 1.91:1 to 3:4 (Instagram Help)

Drop a local file to check it. Nothing is uploaded.

How it works

  1. 1

    Drop in an image. The browser reads it, and nothing is uploaded.

  2. 2

    The checker reads its width, height and ratio.

  3. 3

    It marks whether the ratio falls between 1.91:1 and 3:4, the range Instagram keeps without cropping.

  4. 4

    It also tells you if the photo is wider than 1080, which Instagram sizes down, or narrower than 320, which Instagram enlarges.

Platform facts

FAQ

What size should an Instagram post image be?
Instagram Help says to upload a photo at least 1080 pixels wide with a ratio between 1.91:1 and 3:4.
What happens if my photo is wider than 1080 pixels?
Instagram sizes it down to 1080 wide.
What happens if the ratio is outside 1.91:1 to 3:4?
Instagram crops it to fit a supported ratio.
What's the tallest post image?
3:4, which is 1080 x 1440 at full width.

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