LinkedIn post size decides whether your client’s image fills the feed or gets cropped on the first scroll. LinkedIn renders the same post differently on mobile and on desktop. Pick the wrong dimensions and the platform crops your image, compresses your video, or hides your hook behind “See more”.
Below are the exact LinkedIn post sizes for images, carousels, documents, video, and text, plus how to publish at those sizes across client accounts in RecurPost.
Why LinkedIn post size matters
LinkedIn auto-crops any post that does not match a supported aspect ratio. A landscape image squeezed into a mobile feed loses its top and bottom edges. A vertical video taller than 9:16 gets letterboxed. Your text past the cutoff disappears until someone taps to expand it.
Agencies running several client accounts feel this fastest. Picture an agency that posts one client carousel at 1200 x 1200. It looks sharp on desktop. On mobile, LinkedIn trims the sides and the client’s logo sits half off-screen. Hitting the right size on the first publish saves you the reshoot, the re-upload, and the awkward client message.
LinkedIn image dimensions
The recommended LinkedIn single-image size is 1200 x 627 pixels (1.91:1 landscape). LinkedIn also supports a square 1:1 and a portrait 4:5, and each one claims a different amount of feed space.
| Format | Size (pixels) | Aspect ratio | Max file size |
| Landscape (recommended) | 1200 x 627 | 1.91:1 | 5 MB |
| Square | 1200 x 1200 | 1:1 | 5 MB |
| Portrait | 1080 x 1350 | 4:5 | 5 MB |
LinkedIn accepts JPG, PNG, and non-animated GIF files, each up to 5 MB. Portrait 4:5 fits clients who want the most vertical room in the mobile feed. Avoid going taller than 4:5: LinkedIn crops anything more vertical, so a 9:16 still image loses its edges.
LinkedIn carousel and document post sizes
A LinkedIn carousel is a document post, so you upload a PDF rather than separate slides. LinkedIn displays these best at 1080 x 1080 pixels (1:1) or 1080 x 1350 pixels (4:5).
| Spec | Value |
| Best display size | 1080 x 1080 (1:1) or 1080 x 1350 (4:5) |
| Upload format | PDF document post |
| Max pages | 300 |
| Max file size | 100 MB |
| Image carousel slide | Up to 10 MB per slide |
Use 4:5 (1080 x 1350) when you want more mobile screen space, and 1:1 when you want a tidy frame in the desktop feed. A document post accepts up to 300 pages and 100 MB, which is plenty for a client one-pager turned into a swipeable carousel.
Stay under both limits: LinkedIn rejects a PDF that runs longer than 300 pages or heavier than 100 MB.
LinkedIn video specifications
LinkedIn native video runs from 256 x 144 to 4096 x 2304 pixels and from 3 seconds to 10 minutes. The platform supports square, portrait, vertical, and landscape clips.
| Spec | Value |
| Resolution range | 256 x 144 to 4096 x 2304 |
| Aspect ratios | 1:1, 4:5, 9:16, 16:9 |
| Length | 3 seconds to 10 minutes |
| Max file size | 5 GB |
| Frame rate | 30 FPS recommended |
Use 9:16 for a short vertical clip that fills the mobile screen, and 1:1 or 4:5 for in-feed video that plays well on both devices. A 60-second vertical cut works for quick client updates. Keep native uploads under 10 minutes and 5 GB, or LinkedIn refuses the file.
LinkedIn text length and the “See more” cutoff
A LinkedIn post allows up to 3,000 characters of body text. The feed shows only a small slice before it collapses the rest behind “See more.”
LinkedIn truncates at roughly 140 characters on mobile and roughly 210 characters on desktop. Most of your client’s audience reads on a phone, so the first 140 characters carry the post. Put the hook and the call to action in that opening line. Bury the point past the fold and most readers never expand it.
Engagement data points two ways on length. Short posts of 150 to 300 characters read fast and suit a single sharp idea. Longer posts of 1,200 to 1,600 characters give a thought-leadership story room to build. Treat both as guidance, not a rule, and test them against each client’s audience.
LinkedIn post size quick reference chart
Every LinkedIn post size spec sits in the table below, so you can size a client post without scrolling back.
| Format | Recommended size | Aspect ratio | Max file size |
| Single image (landscape) | 1200 x 627 | 1.91:1 | 5 MB |
| Square image | 1200 x 1200 | 1:1 | 5 MB |
| Portrait image | 1080 x 1350 | 4:5 | 5 MB |
| Carousel/document | 1080 x 1080 or 1080 x 1350 | 1:1 or 4:5 | 100 MB (PDF) |
| Video | Up to 4096 x 2304 | 1:1, 4:5, 9:16, 16:9 | 5 GB |
| Text post | Up to 3,000 characters | n/a | n/a |
How to publish at the right LinkedIn post size in RecurPost
RecurPost crops and previews your LinkedIn posts to the correct size before they go out. You hit the right dimensions inside the composer instead of letting LinkedIn auto-crop the upload.
RecurPost’s image cropper and built-in image editor carry platform-specific crop presets, so you frame a client image to LinkedIn’s 1:1, 1.91:1, or 4:5 in one click. RecurPost’s post preview shows the LinkedIn-accurate render, including where the “See more” fold falls, so you confirm the hook lands above the cutoff. RecurPost also tailors the same idea per platform, so you resize and re-caption for LinkedIn without duplicating creative across every account.
Picture a freelancer sizing one client image to LinkedIn 4:5, checking the mobile fold in the preview, then queuing the post across three client accounts from one calendar. RecurPost helps you publish at the right size. RecurPost does not change LinkedIn’s limits, so the 3,000-character cap and the 5 MB image ceiling still apply.
RecurPost sits this work inside the wider LinkedIn scheduler, where you plan, queue, and publish a full week of correctly sized LinkedIn posts for every client.
LinkedIn Post Size: FAQs
1. What size should a LinkedIn post image be?
A LinkedIn post image works best at 1200 x 627 pixels for landscape, 1200 x 1200 for square, or 1080 x 1350 for portrait. LinkedIn accepts JPG, PNG, and non-animated GIF files up to 5 MB. Portrait 4:5 claims the most space in the mobile feed.
2. What is the LinkedIn post character limit?
A LinkedIn post allows up to 3,000 characters of body text. The feed hides text after about 140 characters on mobile and about 210 on desktop behind “See more.” Front-load the hook so it shows before the cutoff.
3. What is the best LinkedIn carousel size?
A LinkedIn carousel works best at 1080 x 1080 pixels (1:1) or 1080 x 1350 pixels (4:5). LinkedIn carousels are PDF document posts that accept up to 300 pages and 100 MB.
4. How long can a LinkedIn video be?
A LinkedIn native video can run from 3 seconds to 10 minutes. The file can reach 5 GB and a resolution up to 4096 x 2304. A 1 to 2 minute clip suits most in-feed client video.
5. What aspect ratio is best for LinkedIn?
LinkedIn supports 1:1, 4:5, 9:16, and 16:9 for video, and 1.91:1, 1:1, and 4:5 for images. Vertical 4:5 and 9:16 fill more of the mobile screen, so they fit phone-first audiences. Square 1:1 reads cleanly on both mobile and desktop.
6. Does LinkedIn compress images?
LinkedIn compresses images that exceed its size or dimension limits. Keep each image under 5 MB and at a supported size (1200 x 627, 1200 x 1200, or 1080 x 1350) to hold quality. PNG holds text and logos sharper than JPG at the same dimensions.
Try RecurPost
RecurPost crops, previews, and schedules your LinkedIn posts at the correct size, then publishes them across every client account from one calendar. RecurPost’s Agency plan covers 20 social accounts for $79/mo with no per-seat charge. See RecurPost plans and pricing for every add-on with its unit price, or start your 14-day free trial with no credit card.
