Instagram post size checker
Check an image's dimensions and preview a centered crop for a feed post, Story or Reel. Choose an image to download the crop, or enter its width and height.
Image dimensions
Check your image
The checker reads your image in this browser. It does not upload it. JPEG, PNG, WebP or GIF, up to 20 MB and 40 megapixels.
The crop is a centered preview, not a guarantee of Instagram's final crop. Placement and publishing tools can behave differently.
Choose an image to download. PNG keeps transparency; JPEG uses a white background. The longest side is at most 4,096 px. Animated images export one frame.
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Common Instagram image sizes
These are practical starting sizes. An aspect ratio describes shape; images at other pixel dimensions can have the same shape.
| Use | Example size | Shape |
|---|---|---|
| Feed portrait | 1,080 × 1,440 px | 3:4 |
| Feed portrait | 1,080 × 1,350 px | 4:5 |
| Square post | 1,080 × 1,080 px | 1:1 |
| Wide post | 1,080 × 566 px | about 1.91:1 |
| Story or Reel | 1,080 × 1,920 px | 9:16 |
Will Instagram crop my photo?
A taller or wider image may need a crop for a given placement. This tool shows the geometry of a centered crop; Instagram may offer a different position or apply different rules for carousels, videos and publishing tools.
What changed from 4:5?
Instagram added support for 3:4 photos in 2025. Both 3:4 and 4:5 are useful portrait shapes; check your publishing tool's current requirements before scheduling.
Further reading: Instagram's photo resolution help and reporting on the 3:4 announcement.
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