When you're trying to get the best performance out of your LinkedIn posts, the image size you choose matters. A lot. For single images in the feed, I always recommend sticking to either a 1:1 square aspect ratio (1080 x 1080 pixels) or a 4:5 vertical aspect ratio (1080 x 1350 pixels). These two formats simply perform the best, especially on mobile, where most of your audience is scrolling.
For those times you're sharing a link, the standard is still 1200 x 628 pixels. Getting these dimensions right from the start means your images won't get awkwardly cropped, and your content will look crisp and professional every time.
Your Quick Reference LinkedIn Size Cheat Sheet
Let's cut to the chase. Getting your LinkedIn image dimensions right is one of the easiest wins for making a strong first impression. When an image is blurry, or the key part of your message gets chopped off, you've lost the battle for attention before anyone even reads your copy.
This guide is built to be your go-to reference—no fluff, just the exact numbers you need to get it right, fast.
The key takeaway here? While LinkedIn supports various formats, the trend is undeniably toward square and vertical images that take up more screen real estate. If you can master these core sizes, you're already ahead of the game in creating a feed that stops the scroll.
To help you find what you need at a glance, here’s a quick summary table of the most common specs.
LinkedIn Post Dimensions Quick Reference Guide
| Content Type | Recommended Dimensions (Pixels) | Aspect Ratio | Max File Size |
|---|---|---|---|
| Single Image (Square) | 1080 x 1080 px | 1:1 | 5 MB |
| Single Image (Vertical) | 1080 x 1350 px | 4:5 | 5 MB |
| Link Preview Image | 1200 x 628 px | 1.91:1 | 5 MB |
| Carousel/PDF Document | 1080 x 1080 px or 1080 x 1350 px | 1:1 or 4:5 | 10 MB (PDF) |
| Native Video | 1920 x 1080 px (Recommended) | 16:9 or 1:1 | 5 GB |
Bookmark this page so you can pull up these numbers whenever you're creating new content. It’s a simple step that makes a huge difference in how your brand is perceived.
If you want to really stretch your high-value content, a great strategy is to learn how to turn a webinar into 30 days of social media posts. Just be sure every single piece you create is perfectly sized for LinkedIn using these guidelines. It’s the key to making sure your repurposed content looks just as polished as the original.
Getting LinkedIn Image Post Sizes Right
Getting your image dimensions right on LinkedIn is more than just a technical detail—it's about making a strong first impression in a busy professional feed. Unlike some other platforms, LinkedIn treats images differently depending on how you post them, particularly for single images versus link previews. If you don't account for these quirks, you risk your visuals getting awkwardly cropped, undermining your message before anyone even reads it.
The classic 1200 x 628 pixels dimension is probably the one you've heard of most. It's important to remember that this size is specifically for the thumbnail image that auto-generates when you share an external link. For images you upload directly, that landscape format just doesn't perform as well.
Recommended Sizes for Single Image Posts
To really grab attention, you need to think vertically. Most people scroll LinkedIn on their phones, so you want your image to take up as much of that valuable screen space as possible. This is where square and vertical formats shine.
- Square (1:1 Ratio): A resolution of 1080 x 1080 pixels is your go-to for a clean, reliable format. It looks fantastic on both desktop and mobile and is incredibly versatile for all types of content.
- Vertical (4:5 Ratio): For maximum impact, use 1080 x 1350 pixels. This is the tallest your image can be in the feed before LinkedIn starts cutting it off. It’s a real attention-grabber.
Pro Tip: You can technically upload a super-tall 9:16 image (like an Instagram Story), but be warned: LinkedIn will crop it down to a 4:5 ratio in the feed. To avoid any surprises, always keep your key visual elements within that 1080 x 1350 px frame.
Multi-Image Posts and Collages
Things get a little more complex when you upload several images at once. LinkedIn automatically creates a collage, and the layout it chooses depends on how many images you use and their orientation. This can result in some unexpected and unflattering crops if you've mixed and matched formats.
The easiest way to maintain control and ensure a polished look is to make all your images for a multi-image post square (1080 x 1080 px). This consistency forces a predictable, clean grid every time. For a deeper dive into different collage layouts, you can check out our complete guide on the perfect https://postiv.ai/blog/image-size-for-linkedin-post.
Finally, a quick technical note: always export your images as either a JPG or PNG. Keep an eye on the file size, too—LinkedIn has a 5 MB limit for static images. Make sure your files are optimized for the web to balance quality with a fast loading time.
Creating High-Impact LinkedIn Carousels and PDFs
LinkedIn carousels are a fantastic way to tell a story or teach something in-depth. Since they're uploaded as PDF documents, they get users actively swiping through your content, which can really drive up engagement when you get it right. Nailing the document specs is the first step to making sure the experience is smooth for your audience.
This format is incredibly flexible. You can walk your audience through a narrative, visualize data, or break down a complicated subject into easy-to-follow slides. For a complete guide on the uploading process itself, check out our walkthrough on how to post a carousel on LinkedIn.
Optimal Carousel Dimensions and File Specs
To keep your carousels looking crisp and professional, you'll want to stick to a couple of tried-and-true dimensions. The good news is that they're the same as the best single-image post sizes, which helps keep your design workflow consistent.
- Square (1:1 Aspect Ratio): The go-to here is 1080 x 1080 pixels. It's a really versatile and safe bet that looks clean and balanced on any device.
- Vertical (4:5 Aspect Ratio): For a bit more impact, use 1080 x 1350 pixels. This taller format claims more real estate in the mobile feed, which is great for catching someone's eye as they scroll.
When you export your final document, just make sure the PDF file stays under the 100 MB limit. You can include up to 300 pages (or slides), giving you plenty of space for even the most detailed presentations.
It's also worth noting that the "sweet spot" for carousel length has been shifting. Recent data suggests that posts with fewer than five slides saw a 35% drop in reach, and even those with five to ten slides saw a dip. The trick is to find that perfect balance between delivering real value and not losing your audience's attention partway through.
Getting Your LinkedIn Video Specs Just Right
Video is a powerhouse on LinkedIn for showing off your expertise and building real authority. But if you want your videos to look sharp and play without a hitch, you have to get the technical details right. They're quite different from the specs for static images, and nailing them is key to making a professional impression in the feed.
The biggest thing to consider is the aspect ratio, especially since most people are scrolling on their phones. Sure, you can post a standard landscape (16:9) video, but it just doesn't grab the same amount of screen real estate. To really stop the scroll, you need to think vertically.
Key Video Dimensions and Ratios
For the best engagement, always lean towards square or vertical formats. These shapes are designed to fill up the screen on a mobile device, making your content much harder to ignore.
- Square (1:1): A resolution of 1920 x 1920 pixels is your go-to for a format that looks fantastic on both desktop and mobile feeds. It's a solid, reliable choice.
- Vertical (4:5 or 9:16): Taller formats are your best bet for maximizing your presence. A 1080 x 1350 pixels (4:5) video is an excellent vertical option, while a full-screen 1080 x 1920 pixels (9:16) gives you that immersive, story-like feel.
If you're looking to make your video workflow more efficient, it's worth exploring how AI automates LinkedIn video creation to save time and effort.
Technical File Requirements
Beyond the shape of your video, the file itself needs to meet LinkedIn's upload criteria. Paying attention to the file size, duration, and format will save you from the headache of a failed upload. For a complete walkthrough of the process, check out our guide on how to post a video on LinkedIn.
Here are the hard numbers you need to know:
- Maximum File Size: 5GB
- Video Length: A minimum of 3 seconds and a maximum of 10 minutes.
- Supported File Formats: ASF, AVI, FLV, MOV, MPEG-1, MPEG-4, MKV, and WebM. (MP4 is generally the most common and reliable).
- Frame Rate: Keep it under 60 FPS (Frames Per Second).
Stick to these guidelines, and your video content will be perfectly prepped for the platform. This means better engagement and a polished, professional look for your personal or company brand.
Getting Your Profile and Company Page Images Just Right
Think of your LinkedIn profile or company page as your digital headquarters. Before anyone reads a single word you've written, they see your profile picture and banner. Getting these core images right is non-negotiable for making a sharp, professional first impression.
Unlike your feed posts, these images are static brand assets. They are the constant visual handshake you offer to every visitor. You absolutely want them to be crisp, clear, and perfectly sized to avoid any weird cropping or pixelation that could cheapen your brand's look.
Personal Profile Image Dimensions
For your personal profile, it all comes down to two key images: your profile picture and your background photo. They have very different shapes and jobs, so you need to treat them separately.
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Profile Picture: The magic number here is 400 x 400 pixels. You'll upload a perfect square, and LinkedIn will handle cropping it into a circle.
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Background Photo: For the wide banner at the top, aim for 1584 x 396 pixels. This is your chance to add some personality or context to your profile.
Expert Tip: Don't forget that your profile picture will cover up the bottom-left corner of your background photo, especially on desktop views. It’s a classic mistake to put your company logo or a key piece of text there, only to have it hidden. Keep that zone clear!
Company Page Image Dimensions
Company pages have a similar setup, but the dimensions are different to fit the page's unique layout. You've got your logo and your cover image.
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Company Logo: The standard size is 300 x 300 pixels. This is the small square icon that shows up everywhere—next to your posts, in search results, and on employee profiles.
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Cover Image: The recommended size is 1128 x 191 pixels. Notice how much thinner and wider this is compared to the personal background photo.
Nailing these dimensions is a simple but powerful way to show you pay attention to detail. It ensures your branding is consistent and professional across the entire platform, building trust with every page view.
A killer visual might stop the scroll, but it's your words that start the conversation and push people to act. You can get your LinkedIn post size perfect, but if the copy doesn't hit the mark, you'll lose your audience before you even get started. Underestimate the power of well-crafted text, and even the most brilliant graphic will fall flat.
LinkedIn gives you a lot of room to write, but that doesn't mean you should write a novel. Longer isn't always better. The real trick is understanding how the platform shows your post in the feed and making that tiny preview count.
The Make-or-Break First 210 Characters
Those first few lines of your post are the most valuable real estate you have. Before anyone clicks "see more," they're only going to see a tiny snippet of what you wrote. This is your hook—your one shot to spark enough curiosity to get them to expand your post.
- The Big Limit: LinkedIn massively increased its character limit from 1,300 to 3,000 characters back in 2023. You can get the full scoop on this major platform update and what it means for creators.
- The Tiny Preview: Despite that massive character count, only the first ~210 characters actually show up in the feed before getting cut off.
- The Goal: Your number one job is to write an opening so compelling within that tiny space that clicking "see more" feels like a necessity, not an option.
Expert Tip: Treat those first 210 characters like a headline. It's your place to make a bold claim, ask a tough question, or drop a surprising stat that makes people need to know the rest of the story.
Finding That Sweet Spot for Engagement
While the platform technically allows for long-form articles right in the feed, the data consistently shows that shorter, scannable posts tend to get more traction. The best-performing posts strike a fine balance—they offer enough substance to be valuable but are concise enough to respect the reader's time.
Most experts agree the sweet spot for engagement is somewhere between 150 and 250 words. This gives you enough room to add context, build your case, and include a clear call to action without making your audience's eyes glaze over.
As for formatting, think simple. Use short sentences, break up ideas with bullet points, and don't be afraid of white space. The easier your post is to read, the more likely your message will land with the same clarity as your visuals.
Common Questions About LinkedIn Image Sizes
Even with a comprehensive cheat sheet, you're bound to run into some specific quirks. Let's dig into a few of the most frequent questions that pop up, so you can troubleshoot on the fly and keep your content looking sharp.
What’s the Single Best Image Size to Use?
If I had to pick just one, it would be the 1:1 square at 1080 x 1080 pixels. This is your safest bet for a single image post. It works beautifully on both desktop and mobile feeds without any unexpected or awkward cropping.
Sure, a vertical 4:5 image (1080 x 1350 pixels) grabs a bit more screen real estate, which is great for mobile scrolling. But the classic square is far more reliable and versatile, especially if you ever decide to mix it into a multi-image layout later on.
How Does LinkedIn Handle Vertical Images in a Multi-Image Post?
This is where so many people get tripped up. When you mix and match different image orientations—say, a vertical and a landscape—LinkedIn's automatic collage builder takes over. More often than not, it crops your images in some really unflattering ways. Your tall, vertical shot will almost certainly get its top or bottom chopped off.
The only way to keep full control is to make sure every image in your multi-image post has the same aspect ratio. Sticking with all squares (1080 x 1080 px) is the simplest path to a clean, professional grid every single time.
Why Does My Shared Link Image Look So Blurry?
A blurry or badly cropped link preview image is almost always due to one of two culprits: either the original image file is too small, or it doesn't fit the recommended 1.91:1 aspect ratio. The sweet spot for link thumbnails is 1200 x 628 pixels.
If your source image is smaller than that, LinkedIn stretches it to fill the space, which leads to that fuzzy, pixelated look. If the shape is wrong, the platform just crops it to fit, which can easily slice off key parts of your graphic or text. For a crisp, professional thumbnail, always start with a high-resolution image at the correct ratio.
And remember, it's not just about images. While LinkedIn quietly bumped its post limit up to 3,000 characters, the game is still won in the first few lines. Learn more about the nuances of LinkedIn character limits and why being concise is still your best strategy for grabbing attention.
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