LinkedIn accepts post photos from 552 x 276 px up, recommends a width of 1080 px, and allows ratios from 3:1 to 4:5 with a 5 MB cap per photo. Most people export 16:9 out of habit, which is allowed but renders short in the feed.
Where it shows
- The LinkedIn feed on desktop
- The LinkedIn feed in the mobile app
- The post detail view when someone opens the post
- The Featured section of a profile when the post is pinned there
- The notifications list as a small square thumbnail
The safe zone
Nothing is drawn over a LinkedIn post image, so the frame you get is decided entirely by the ratio you upload. LinkedIn accepts 3:1 at the wide end and 4:5 at the tall end, and 1080 x 1350 px is exactly as tall as it allows at the recommended width. In a multi photo post the layout of the whole grid is set by the orientation of the first image and everything after it is tiled at a fraction of its size, so keep the subject central in every image except the one you lead with.
Quirks worth knowing
- LinkedIn's published floor is 552 x 276 px and its published recommendation is a width of 1080 px with no matching height, because the height is whatever your ratio makes it.
- The accepted ratio range runs from 3:1 to 4:5, which makes 1080 x 1350 px exactly as tall as LinkedIn permits at the recommended width.
- A multi photo post takes up to 20 images, and the orientation of the first one decides how the whole grid is arranged.
- LinkedIn's share photos help names no accepted file formats at all, so the JPG and PNG listed here come from its page image specification instead.
- The 5 MB share limit is separate from the 3 MB limit on page assets, so the same logo file can pass in a post and fail as a page cover.
- Photos cannot be resized or edited once the post is live, so a bad crop has to be deleted and reposted.
Common mistakes
- Exporting a 1920 x 1080 px slide frame, which is inside the allowed range but renders short and small in the feed column.
- Uploading below 552 x 276 px and having the photo refused rather than scaled up.
- Ordering a multi photo post so the strongest picture lands second, where the grid shows it small.
- Assuming a carousel means a stack of images, when LinkedIn's swipeable carousel is a document post with its own upload path.
What we recommend
- Export at 1080 x 1350 px, the tallest ratio LinkedIn allows at its recommended width.
- Lead a multi photo post with the image that should set the layout, since the first one determines the grid.
- Stay under 5 MB per photo and remember the same file faces a 3 MB limit if it ever becomes a page asset.
- Use a document post rather than a stack of photos when the point is to be swiped through in order.
Common questions
What is the best image size for a LinkedIn post?
LinkedIn recommends a width of 1080 px and accepts ratios from 3:1 to 4:5. At that width the tallest permitted image is 1080 x 1350 px, which takes the most height in the feed column. Anything wider is allowed and simply renders shorter.
Why was my LinkedIn image rejected?
LinkedIn's floor is 552 x 276 px and its ceiling is 5 MB per photo. A file below the pixel minimum is refused rather than upscaled, and a heavy PNG can exceed the size limit. Check both numbers before assuming something is broken.
How many images can I put in one LinkedIn post?
Up to 20 in a multi photo post. The grid layout is determined by the orientation of the first image and the rest are tiled around it at reduced size. Photos also cannot be resized or edited after the post has gone live.
Is a LinkedIn carousel the same as a multi image post?
No. A multi image post shows a grid of up to 20 photos with the first one setting the layout. The swipeable carousel people usually mean is a document post, which uploads as a document and follows its own page ratio rather than these photo rules.
More answers on thumbnail, carousel and cover questions are on the FAQ.