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Instagram Post Size & Resizer

Crop photos to the right Instagram post size - square, 4:5 portrait or the taller 3:4 grid shape - without losing quality.

  • Private – runs in your browser
  • No signup
  • Free, no watermark
Drop an image here, or tap to choose JPG, PNG, WebP, HEIC and more · or paste with Ctrl+V Resized on your device – never uploaded

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How to use the instagram post

  1. Add an imageDrop a photo onto the box, tap to choose one, or paste it.
  2. Pick a sizeChoose a preset such as YouTube thumbnail or Instagram story, or type your own width and height.
  3. Frame itIn Crop mode, drag the image and use the zoom slider to choose what stays in shot. Fit mode adds a background instead of cropping.
  4. DownloadSave as JPG, PNG or WebP at the exact size you chose.

Instagram post sizes

  • Square: 1080 × 1080 pixels (1:1)
  • Portrait: 1080 × 1350 pixels (4:5) - takes up the most space in the feed
  • Tall portrait: 1080 × 1440 pixels (3:4) - matches the profile grid's rectangular thumbnails
  • Landscape: 1080 × 566 pixels (1.91:1)

Instagram shows posts 1080 pixels wide, so uploading anything larger does not make it sharper. Portrait posts fill more of the screen and tend to get more attention than square ones.

Frequently asked questions

What is the best size for an Instagram post?
1080 × 1350 pixels (4:5 portrait) gives the largest presence in the feed. Use 1080 × 1080 for a classic square.
Why does Instagram crop my photo?
Instagram only accepts ratios between 1.91:1 and 4:5 in the feed. Anything taller or wider is cropped. Resizing first lets you choose the framing.
What size is the Instagram profile grid?
The grid now shows posts as 3:4 rectangles. A 1080 × 1440 image fills the grid tile exactly with no cropping.

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Updated · Free to use, no account needed.