LinkedIn Post Size: The Complete Guide to LinkedIn Post Dimensions, Image Sizes, Character Limits, and Content Formatting
Use a 1200 x 1200 pixel square image for most LinkedIn posts if you want the safest bet. It looks good on desktop. It looks good on mobile. It also saves you from weird cropping, which is where the pain usually starts.
TLDR: For regular LinkedIn posts, aim for 1200 x 1200 px images, keep your post under 3,000 characters, and make the first 140 characters count. For example, a marketer posting three times a week with square images and strong opening lines may see higher clicks because mobile users can understand the post in about 2 seconds. Use 1080 x 1350 px for taller posts when you want more screen space.
LinkedIn post sizes at a glance
LinkedIn is simple until it is not. You upload a great image. Then LinkedIn trims the top. Or the preview looks fine on desktop but strange on mobile. It drives me crazy that one tiny crop can ruin a clean design.
Here are the main sizes to remember:
- Best all-purpose image: 1200 x 1200 px
- Best tall image: 1080 x 1350 px
- Best wide image: 1200 x 627 px
- Best document slide: 1080 x 1080 px or 1080 x 1350 px
- Best video size: 1920 x 1080 px, 1080 x 1080 px, or 1080 x 1350 px
If you only remember one thing, remember this: square wins most of the time.
Best image dimensions for LinkedIn posts
LinkedIn supports different image shapes. Some work better than others.
| Post type | Recommended size | Best use |
|---|---|---|
| Square image | 1200 x 1200 px | General posts, quotes, tips, simple graphics |
| Tall image | 1080 x 1350 px | Mobile-first posts, charts, bold visuals |
| Wide image | 1200 x 627 px | Link previews, blog posts, announcements |
| Multiple images | 1080 x 1080 px each | Event photos, product shots, team updates |
Square images are the least risky. They do not take over the whole feed, but they still feel big enough. They are also easy to reuse on other channels.
Tall images take up more room on mobile. That can be good. More screen space means more attention. But keep key text away from the edges. LinkedIn previews can be fussy.
Wide images work well for links. They feel more like news cards. Use them when sharing a blog, report, case study, or landing page.
LinkedIn post character limits
The maximum character limit for a standard LinkedIn post is usually 3,000 characters. That sounds like a lot. It is. But most people will not read a wall of text while sipping cold coffee between meetings.
The first lines matter most.
- Post limit: Up to 3,000 characters
- Visible before “see more”: About 140 characters, depending on device
- Best first line: Short, clear, and specific
- Best total length: Often 600 to 1,200 characters
Think of the first line as the door. If the door is boring, nobody walks in.
Weak opening:
“I wanted to share some thoughts about marketing.”
Better opening:
“We changed one image size and got 31% more clicks.”
The second one gives a reason to keep reading. It has a number. It sounds real. It creates a tiny itch.
How to format LinkedIn posts
Good formatting makes your post easier to read. Bad formatting makes it feel like homework.
Use short lines. Add space. Break ideas into chunks. LinkedIn users scroll fast, so your post should feel light.
Try this simple structure:
- Hook: Start with a strong first line.
- Context: Explain the problem in 1 or 2 lines.
- Value: Share the tip, story, lesson, or result.
- Close: Ask a simple question or suggest one action.
Example:
“Your LinkedIn image may be getting cropped wrong.
Use 1200 x 1200 px for most posts.
Keep text in the middle.
Export as PNG or JPG.
Then check the mobile preview before posting.”
That is easy to scan. No drama. No fluff.
LinkedIn document and carousel post size
Document posts often perform well because people swipe through them. LinkedIn calls them documents. Many people call them carousels.
Use these sizes:
- Square carousel: 1080 x 1080 px
- Tall carousel: 1080 x 1350 px
- File type: PDF is the safest choice
- Page count: Keep it short, usually 5 to 12 slides
Expect to waste time on tiny slide fixes if your margins are too tight. Keep text away from the edges. Put one idea on each slide. Make slide one do the heavy lifting.
A good first slide might say:
“7 LinkedIn image mistakes that quietly kill clicks”
That is clear. It promises value. It makes people swipe.
LinkedIn video post dimensions
Video can work well on LinkedIn, especially when it teaches something fast. Keep it crisp.
- Wide video: 1920 x 1080 px
- Square video: 1080 x 1080 px
- Tall video: 1080 x 1350 px
- Length: 30 to 90 seconds is a strong range
- Captions: Always add them
Many people watch with sound off. Captions are not cute extras. They are the post.
Put the main point in the first 3 seconds. Do not start with a logo animation. Nobody asked for that. Start with the problem, result, or surprise.
LinkedIn link preview image size
When you share a link, LinkedIn often pulls an image from the page. The best image size is 1200 x 627 px. This creates a clean wide preview.
If the wrong image appears, check your page image settings. Also clear LinkedIn’s link preview cache if needed. Yes, this is annoying. It should be easier.
For best results:
- Use a clear title.
- Use a sharp preview image.
- Keep key text centered.
- Avoid tiny logos.
- Test the post before publishing.
Best file formats for LinkedIn images
Use PNG for graphics with text. Use JPG for photos. Keep files clean and sharp.
Try to keep image files under 5 MB when possible. Bigger files can upload slowly. They may also get compressed harder. That can make text look fuzzy.
For graphics, use high contrast. Black text on white works. White text on a dark background works. Pale gray text on a light blue background does not work. It just whispers.
Quick LinkedIn post checklist
Before you hit publish, run through this list:
- Is the image 1200 x 1200 px or another correct size?
- Is the first line strong?
- Can someone understand the post in 5 seconds?
- Is the text easy to scan?
- Are key words away from image edges?
- Does the post look good on mobile?
- Is there one clear next step?
Simple posting tips that help
Use clean visuals. Use fewer words in images. Let the caption do the talking.
Write like a person. Not like a committee. One strong opinion beats ten soft sentences.
Do not bury the point. Put the result, problem, or tip near the top. If your post needs five lines to warm up, cut the warm-up.
Here is the safest formula:
- Image: 1200 x 1200 px
- Caption: 600 to 1,200 characters
- Opening: Under 140 characters
- Format: Short lines with space
- Ending: One simple question
LinkedIn rewards clarity. Use the right size. Make the first line count. Keep the layout clean. Your post will already be ahead of most of the feed.
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