Your Complete Guide to LinkedIn Posts Specs

Getting your LinkedIn specs right is the first step to creating content that actually performs. Think 1200 x 627 pixels for a classic landscape image or 1080 x 1080 pixels if you want to grab attention on mobile. For native video, you’ve got a generous 5GB to work with, while carousels (or document posts) are capped at 100MB.

Nailing these numbers isn't just about avoiding blurry images or weird crops. It's about playing by the rules of the algorithm to maximize your reach and impact in an ethical way.

LinkedIn Post Specifications At-a-Glance

The table below is your quick-reference cheat sheet. It breaks down the essential technical specs you need to know for every major post type on LinkedIn. Keep this handy to make sure every piece of content you create is perfectly optimized for the platform.

Bookmark this page or save this table. It's the kind of resource you'll come back to again and again to ensure your posts always look professional and perform their best.

Why Do These Specs Matter?

Think of these technical requirements as the foundation of a great post. Getting them right ensures your message comes across cleanly and professionally, whether you're sharing a quick image, a detailed video, or an insightful document. When your posts are properly sized, they load faster, display correctly on every device (especially mobile), and are far more likely to stop the scroll.

• Image Posts: The standard is a landscape image at 1200 x 627 pixels (a 1.91:1 aspect ratio). But honestly, square images at 1080 x 1080 pixels (1:1 ratio) almost always perform better in the feed.
• Video Posts: You can upload videos anywhere from 3 seconds to 10 minutes long, with a file size between 75KB and 5GB. On mobile, a vertical aspect ratio like 4:5 or 9:16 is the way to go.
• Carousel/Document Posts: These take PDF, PPT, and DOCX files up to 100MB and 300 pages. For the best viewing experience, design your slides in a square (1080x1080) or vertical (1080x1350) format.

This simple breakdown covers the three pillars of technical quality—dimensions, file size, and formats—that apply to everything you post on LinkedIn.

Getting this right prevents all those little technical glitches that make your content look amateur. And while mastering LinkedIn is key, it's smart to have a broader social media video size guide in your back pocket to see how these specs stack up against other platforms. That way, your content is always on point, no matter where you share it.

Optimizing LinkedIn Image and Text Posts

Putting together a great LinkedIn post is about more than just having a solid idea. To really make an impact, you have to nail the technical details. LinkedIn's specs aren't arbitrary; they’re designed to make content look its best, especially on mobile, where a huge chunk of your audience is scrolling. For a standard single-image post, the magic number is 1200 x 627 pixels. This ensures your image is crisp and clear, avoiding any weird, unprofessional cropping.

Sticking to those dimensions is your first line of defense against making a bad impression. But the visual is only half the battle. While you get a roomy 3,000 characters for company pages and 1,300 for personal profiles, how you use that space ethically and effectively is what truly separates a post that gets read from one that gets ignored.

Mastering Text Post Readability

Let’s be honest: nobody wants to read a wall of text. It’s an instant scroll-past for most people. The key to holding attention is to break up your copy with smart, strategic formatting. Think of your post less like a formal paragraph and more like a series of bite-sized, scannable points.

Your first and most important job is to stop the scroll with a killer headline. A powerful opening line sparks curiosity, promises value, and gives people a reason to click "see more." If you ever feel stuck staring at a blank cursor, affordable tools like our headline generator can give you the creative nudge you need.

Once you have their attention, keep it with these formatting tricks:

• Short Paragraphs: Stick to one or two sentences per paragraph. White space is your friend.
• Bullet Points: Use lists to break down complex ideas or highlight key takeaways.
• Strategic Emojis: A few well-placed emojis can add personality and draw the eye to important lines.
• Bold and Italics: Emphasize keywords and phrases with native formatting, but don't overdo it—keep it clean.

Choosing the Best Image Dimensions

While the standard landscape (1200 x 627 pixels) is a safe choice, it isn’t always the most powerful one. On the mobile feed, vertical real estate is king, which is why other aspect ratios often outperform it.

Pro Tip: Square images (1080 x 1080 pixels) take up significantly more vertical space in the mobile feed than landscape ones. This makes them more visually dominant and harder to scroll past, often leading to a nice bump in engagement.

This logic also applies to link posts. The preview image that LinkedIn pulls defaults to that same 1200 x 627 pixel dimension. Always make sure your website’s featured image is set to this size to get a clean, professional-looking preview when you share a URL. As for file types, a good rule of thumb is to use PNG for graphics with text and JPG for photos.

Getting Your Video Content Right on LinkedIn

Video is a powerful way to stop the scroll on LinkedIn, but only if you get the technical details right. Messing up the specs can lead to playback glitches or a video that looks unprofessional, completely undermining your message before anyone even hears it.

LinkedIn gives you a surprising amount of room to work with, but there are a few hard limits you need to know. The file size can be up to 5GB, which is more than enough for high-quality footage. Your video's length needs to be between 3 seconds and 10 minutes, which is the sweet spot for content that’s both quick and meaningful.

Mastering Video Dimensions and Formats

You can upload a few different file types, like AVI or MOV, but my advice is to stick with MP4. It’s the gold standard for a reason—it offers the best mix of quality and compatibility across all devices.

Now, let's talk dimensions. This choice really impacts how people interact with your video, especially on mobile. A standard landscape video (16:9 ratio) is fine, but it gets lost in a vertical feed. If you want to grab attention, you need to think mobile-first.

• Square (1:1): An aspect ratio like 1080 x 1080 pixels takes up a ton of screen real estate in the feed. It’s just harder for people to scroll past.
• Vertical (4:5 or 9:16): Ratios like 1080 x 1350 pixels or 1080 x 1920 pixels are built for the full-screen mobile experience. They completely capture a viewer's focus.

Going with a square or vertical format isn't just a technical choice; it's a strategic one. It's how you stand out and stop the scroll.

Essential Tips for Better Video Posts

Beyond the core specs, a few simple practices can make a huge difference. The most important one? Add captions. A huge number of people browse LinkedIn with the sound off. Burned-in captions or an uploaded .SRT file are non-negotiable if you want your message to actually land.

Your opening is just as critical. The first three seconds are everything. You have to give your audience an immediate reason to stop and watch. A strong visual, a bold statement, or a compelling question can make or break your video's performance. For some great ideas on crafting those crucial first moments, check out our free tool for creating a powerful hook generator for your content.

Don't mistake high production value for authenticity. A genuine, well-framed video shot on your phone can connect far more deeply than an overly polished corporate video. Just focus on delivering clear, valuable insights ethically.

The data backs this up. The format and specs of LinkedIn posts have a massive influence on engagement, and video is leading the charge. Video uploads jumped by 34% year-over-year, making it the most shared content type on the platform. The numbers tell the story: video posts now see an average engagement rate of around 5.60%, a significant climb from the previous 4.00%. You can dig into more of these insights about LinkedIn video engagement on Socialinsider.io.

A Complete Guide to LinkedIn Carousel Posts

Carousel posts, which you might also hear called document posts, are hands-down one of the most engaging formats on LinkedIn. They're perfect for in-depth storytelling and sharing real knowledge. Instead of just a single image, they let people swipe through a series of slides, which is an incredible way to break down complex topics into bite-sized, digestible pieces.

Think of it as a powerful alternative to a wall of text or a long video. You can walk your audience through a step-by-step guide, display data across multiple charts, or tell a compelling story one slide at a time. It puts you in control of the narrative.

Core Carousel Post Specs

Before you dive into designing your next masterpiece, you need to know the technical rules of the road. Getting these specs right ensures your document uploads smoothly and looks professional in the feed.

• Supported File Types: You can upload PDF, PPT, PPTX, DOC, and DOCX files. From experience, PDF is almost always the most reliable choice for making sure your design and formatting look exactly as you intended.
• Maximum File Size: Keep your document under 100MB.
• Maximum Page Count: You can go all the way up to 300 pages or slides in one carousel.

These limits give you plenty of room to create detailed, valuable content. But honestly, the most important spec isn't the file size—it's the dimensions you choose for your slides.

Recommended Dimensions and Best Practices

To create that seamless, visually appealing swiping experience, your slide dimensions are everything. You can upload a standard A4 or presentation-sized document, but they almost always end up with tiny, unreadable text, especially on mobile. That’s a fast way to get scrolled past.

For the best viewing experience, I strongly recommend designing your slides using one of these two dimensions:

• Square (1:1 Aspect Ratio): 1080 x 1080 pixels is a fantastic choice. It fills the screen nicely and looks clean in the feed.
• Vertical (4:5 Aspect Ratio): 1080 x 1350 pixels is my personal favorite. It takes up even more vertical real estate, making your post much harder to ignore as people scroll.

Design Tip: Always, always start with a strong, attention-grabbing cover slide. Treat it like a headline that makes a clear, ethical promise about the value inside. That first slide is what determines whether someone will even bother swiping to see the rest.

To really make your carousels pop, keep your branding consistent across all the slides with your brand colors and fonts. And most importantly, end with a clear call-to-action on your final slide. Tell your audience exactly what to do next, whether it’s leaving a comment, asking a question, or visiting your profile. This is how you turn a simple post into a powerful engagement engine.

Why Following LinkedIn's Specs Is a Game-Changer for Your Reach

Treating LinkedIn's guidelines as a mere technical checklist is a huge mistake. It's actually a core part of any smart, ethical content strategy. The LinkedIn algorithm is built to reward one thing above all else: content that creates a seamless, positive experience for its users. When you nail the LinkedIn post specs, you're sending a direct signal to the algorithm that your content is high-quality and worth showing to more people.

Think about it from a user's perspective. Properly formatted media loads faster, shows up correctly without weird cropping, and looks great on any device. These little details dramatically increase the time people spend on your post—a vital metric called dwell time. More dwell time tells the algorithm your content is valuable, which can give your visibility a serious boost.

Simply put, LinkedIn wants to keep its users on the platform. By creating content that’s easy and enjoyable to consume, you align your goals with theirs, and the algorithm rewards you for it.

Small Tweaks, Massive Impact

Even tiny adjustments to your posts can have a massive cumulative effect on your reach. An image that’s perfectly sized for mobile is a scroll-stopper. A video with the right aspect ratio fills the screen and commands attention. Each of these small optimizations adds up to stronger engagement signals—more likes, more comments, and more shares.

Those positive signals create a powerful ripple effect. The more initial engagement your post gets, the more the algorithm pushes it out to a wider audience, growing your reach exponentially. Suddenly, that boring spec sheet becomes your best tool for growth.

Here’s why it matters so much:

• Better User Experience: Correctly sized media prevents annoying visual glitches, making your content look more professional and keeping people engaged.
• Winning on Mobile: The majority of LinkedIn users are on their phones. Content optimized for a vertical view is non-negotiable if you want to capture their attention.
• Stronger Algorithm Signals: Higher dwell time and more engagement from well-formatted posts are direct instructions to LinkedIn: "Show this to more people."

The potential audience on LinkedIn is staggering. The platform's advertising reach has now climbed to roughly 1.20 billion members worldwide, a number that jumped by an incredible 17.1% in the last year alone. If you want to tap into even a fraction of that audience, you have to play by the platform's rules. You can dig into more of LinkedIn’s growing audience stats on DataReportal.

Ethical and Affordable Content Creation Tools

Let's get one thing straight: creating content that nails all the right LinkedIn posts specs doesn't require a Hollywood-sized budget. In fact, high-quality, professional-looking visuals are more accessible and affordable than ever. It's not about big spending; it's about being resourceful.

The real key is finding tools that handle the technical stuff for you. This saves a ton of time and ensures your final posts are perfectly formatted for the feed, so you can forget about weird cropping issues or blurry images.

Low-Cost Tools for High-Impact Graphics

Plenty of platforms offer free or surprisingly affordable plans built specifically for creating social media graphics. They take the guesswork out of the equation by giving you pre-sized templates that already match LinkedIn’s recommended dimensions for images, carousels, and video thumbnails.

• Canva: There's a reason everyone uses it. Canva gives you thousands of free templates already sized for LinkedIn posts. Its simple drag-and-drop editor makes it easy to add your own branding and text to create polished graphics in minutes.
• Adobe Express: Think of this as a powerful, user-friendly alternative with a focus on high-quality templates and smart design suggestions. The free version is more than enough for most people's day-to-day content needs.
• Visme: This one shines when you need to create more data-driven visuals. If you want to build infographics or charts for a carousel post, Visme is fantastic for turning complex information into something people actually want to look at.

Play Fair: Ethical Content Sourcing

Tools are only half the battle. Building a reputable professional brand means creating original, valuable content and always giving credit where it's due. Authenticity will always beat a big-budget production if it’s genuine and offers real insight.

The most powerful content strategy is built on value and integrity. Don't fall for engagement-bait tactics like posting misleading polls or clickbait headlines. They violate LinkedIn's community policies and will eventually damage your professional standing.

A huge piece of this is respecting intellectual property. Before you grab an image off the internet, make sure it’s legally safe to use. Take a moment to learn how to check if an image is copyrighted. It’s a small step that protects your brand in the long run.

And for those managing multiple accounts or looking to schedule posts in advance, you can compare different LinkedIn automation tools like Taplio to find an ethical, affordable solution that fits your workflow without spamming your network.

Frequently Asked Questions About LinkedIn Specs

Working with LinkedIn's specs day in and day out, you start to see the same questions pop up. It's totally normal—some of the rules can feel a little counterintuitive. I've put together this quick FAQ to tackle the most common head-scratchers I hear from professionals.

Think of this as your go-to for clear, direct answers to get you unstuck and back to creating.

Can I Edit a LinkedIn Post After Publishing?

Yes, but there’s a big catch. You can always go back and edit the text of your post after it’s live. Just click the three-dot menu in the top-right corner of the post and hit "Edit post." Easy.

The limitation is with your media. You cannot change, replace, or even tweak an image, video, or document once it's been published. If you find a typo in your PDF or want to swap out an image, your only move is to delete the entire post and start over. It's a pain, so always double-check your visuals before you hit that publish button.

What Is the Best Image Size for a LinkedIn Company Page?

Good news: the image size recommendations are exactly the same for Company Pages as they are for personal profiles, so there's no need to learn two different sets of rules.

For a standard image shared with a link, the ideal dimension is 1200 x 627 pixels. This classic landscape format ensures nothing important gets awkwardly cropped.

But if you really want to grab attention in the feed, especially on mobile, go with a square 1080 x 1080 pixel image. That 1:1 aspect ratio takes up more screen real estate and just feels more modern. The most important thing is picking a size and sticking with it for brand consistency.

Do Hashtags Still Work on LinkedIn?

Absolutely. In fact, they're still one of the most effective tools for getting your content discovered by people outside your immediate network. Hashtags are how LinkedIn categorizes content, making your posts searchable for anyone interested in those topics.

The sweet spot is 3 to 5 highly relevant hashtags. A solid strategy is to mix one or two broad industry tags (like #Marketing) with a few niche, specific tags that your ideal audience is following (like #B2BContentStrategy). I always recommend placing them at the very end of the post to keep the main message clean and focused.

What Is the Difference Between a Carousel and a Document Post?

This is probably the most common point of confusion, and the answer is simple: they're the same thing.

Officially, the feature is called a "Document Post." When you upload a supported file like a PDF, PowerPoint, or Word doc, LinkedIn's interface automatically converts it into that interactive, swipeable format.

Because the user experience is so similar to the carousels on platforms like Instagram, marketers and creators just started calling them "Carousel Posts." So whether you hear "document" or "carousel," you're talking about the exact same engaging format.

Stop staring at a blank page and start publishing high-quality content that grows your network. Contentide uses AI to turn your rough ideas into authentic, engaging LinkedIn posts in minutes, complete with smart formatting and scheduling. Try Contentide for free and see how easy it is to build your brand.