Up to 1,080 px wide
Meta says Instagram publishes feed photos at the best available resolution up to this width.
Instagram feed photo check
Check photo size before Instagram decides how it fits.
Read the image width, height and aspect ratio locally, then compare them with Instagram's published feed-photo range. The same check also shows supported hidden metadata so dimensions and privacy are part of one pre-post workflow.
Last reviewed July 2026
Practical file readiness
Check the actual file—not a guessed template.
Choose a supported image and see its pixel dimensions, aspect-ratio status and metadata review on your device. The checker does not upload, crop or resize the photo.
Published feed range
The current check has two boundaries.
From 1.91:1 to 3:4
The published aspect-ratio range runs from wide landscape to a taller portrait frame.
320–1,080 px source width
Within the supported ratio, Meta says files in this width range keep their original resolution.
Source: Meta's Instagram photo resolution article on Facebook Help. Platform guidance can change, so use the linked source when preparing a critical campaign.
Examples inside the range
One width can support several compositions.
- Portrait boundary 1,080 × 1,440 px is 3:4, the tallest ratio in Meta's published feed-photo range.
- Portrait 4:5 1,080 × 1,350 px sits inside the published range and is a common portrait canvas.
- Square 1:1 1,080 × 1,080 px also sits inside the range.
- Landscape boundary About 1,080 × 566 px corresponds to the published 1.91:1 wide edge.
How to use the result
Treat the score as a checklist, not an algorithm prediction.
- Select the exact export you intend to post and let the browser read its dimensions.
- Review any crop or resolution warning against the composition you want to preserve.
- Check hidden data, then download a cleaned copy only if you choose to remove supported metadata.
Photo size is not a reach formula.
Published dimensions help explain resizing and cropping behavior. They do not predict distribution, engagement or ranking. There is also no reliable basis here for claiming that writing EXIF keywords into a file improves Instagram visibility; keep useful context in your caption and accessibility text.
Size checker FAQ
The boundary, the crop and the limit.
What Instagram photo sizes does this checker use?
It uses Meta's published feed-photo guidance reviewed in July 2026: Instagram supports photos up to 1,080 pixels wide and describes an aspect-ratio range from 1.91:1 to 3:4. Meta says photos from 320 to 1,080 pixels wide keep their original resolution when the ratio is within that range.
What happens if my photo is outside the supported aspect ratio?
Meta says a photo with an unsupported aspect ratio will be cropped to fit a supported ratio. The checker flags that risk but does not crop or rewrite your image.
Does a 1,080-pixel photo get more Instagram reach?
This is a file-readiness check, not a ranking score. Matching published dimensions can help you avoid unintended resizing or cropping, but this tool does not claim that a specific size or hidden metadata increases reach.