When it comes to posting on LinkedIn, getting the media specifications right is non-negotiable. The most crucial specs to keep in mind are the optimal dimensions—think 1080x1080 pixels for a crisp square image or a 1.91:1 aspect ratio for those clean, professional-looking landscape links.

Sticking to these core guidelines is the first and most important step. It's what separates content that looks sharp and polished from posts that get awkwardly cropped, losing their impact before anyone even reads your copy.

A Quick Cheatsheet for LinkedIn Post Specs

Knowing the correct dimensions, file sizes, and formats for each type of content is the bedrock of a solid LinkedIn strategy. You could have the most powerful message in the world, but if the presentation is off, it will fall flat. The LinkedIn algorithm actually favors content that delivers a seamless user experience, and properly formatted visuals are a huge part of that.

This visual guide breaks down the key media specs you'll need for quick reference.

As you can see, while the formats vary, paying close attention to file size and dimensions is a universal rule for creating quality content. Keep this guide handy to double-check your work before you publish—it's the best way to ensure every single post makes a strong, professional first impression.

LinkedIn Content Specifications Quick Reference

For an even faster way to check your work, this table summarizes the core specifications for the most common content types on LinkedIn. Consider this your final pre-flight check before you hit that "Post" button.

Using these numbers as your foundation helps you sidestep common pitfalls like pixelation, blurry text, or having a key part of your visual chopped off. By consistently meeting these standards, you're sending a clear signal to both your audience and the algorithm that your content is high-quality and worth paying attention to.

Getting Your LinkedIn Image Posts Right

Visuals are a powerful way to stop the scroll on LinkedIn, but only if they look right. Getting the specs wrong can turn a great image into a poorly cropped, blurry mess that undermines your professional credibility. If you want your content to look sharp and polished on every device, you need to follow LinkedIn's specific guidelines.

The two main ways you'll share images are as a standalone post or as the preview image that populates when you share a link. Each one has its own set of rules for looking its best.

Recommended Image Dimensions and Ratios

For a standard image post, you've got a few options. While LinkedIn is flexible, certain aspect ratios are much more effective, especially since most of your audience is scrolling on their phones.

• Square (1:1 Aspect Ratio): The sweet spot here is 1080 x 1080 pixels. This format is incredibly versatile, looking clean and balanced on both desktop and mobile feeds without any weird cropping. It’s a safe, reliable choice.

• Vertical (4:5 Aspect Ratio): For this format, aim for 1080 x 1350 pixels. Vertical images are a smart play because they take up significantly more screen space on mobile devices. This can be a huge advantage in grabbing someone's attention as they scroll.

• Landscape (1.91:1 Aspect Ratio): This is the go-to for images that auto-generate from a shared link. The optimal size is 1200 x 627 pixels. If you use an image that's too small, LinkedIn will stretch it, and you’ll end up with a low-quality preview.

You can technically upload other ratios, but sticking to these three will give you the most consistent and professional-looking results.

Expert Tip: From what I've seen, square (1:1) and vertical (4:5) posts tend to get more engagement than landscape ones. They simply have a bigger footprint in the mobile feed, making them harder for people to just scroll past.

File Size and Format Requirements

Getting the dimensions right is half the battle. The other half is making sure your file itself meets LinkedIn's requirements. Remember, LinkedIn compresses all images to keep the platform running fast, so always start with a high-quality original.

• Maximum File Size: Keep your image file under 5 MB. If it’s any larger, you'll need to run it through a compression tool before you can upload it.

• Supported Formats: You can use JPG, PNG, and GIF files. As a rule of thumb, PNG is usually better for graphics with sharp lines, text, or logos, while JPG is perfect for photographs. Animated GIFs work, but they often appear as static images on Company Pages.

And a final, crucial point: don't forget about accessibility. Always add descriptive alt text to your images. This is essential for helping users with visual impairments understand your content, and it gives search engines more context, which can boost your post's visibility.

To dive deeper into optimizing all your visuals, check out our complete guide on LinkedIn graphic dimensions. When you nail every spec, you're making sure your content works just as hard as you do.

Getting Your LinkedIn Video Specs Just Right

Video is undeniably one of the most powerful tools for grabbing attention on LinkedIn. A sharp, well-formatted video can stop someone mid-scroll, explain a complex idea in seconds, and genuinely connect with your audience. But if you get the technical specs wrong, you risk a blurry mess or an upload that fails entirely—and your message gets lost before it even has a chance.

Fortunately, LinkedIn is pretty flexible with its video requirements, so you can upload high-quality files that look polished and professional. While it accepts a variety of formats like ASF, FLV, and WebM, your best bet is to stick with MP4. It’s the platform's preferred format and almost always guarantees a smooth upload.

Core Video File Requirements

Before we get into the creative stuff like aspect ratios, let's nail down the basic file limits. Getting these numbers right is the first step to making sure your video posts without a hitch.

• File Size: You have a generous 5 GB to work with. This is more than enough for high-resolution video without having to over-compress it.
• Video Duration: Your video must be at least 3 seconds long but can't exceed 10 minutes. This window is perfect for creating content that's long enough to be meaningful but short enough to hold attention.
• Frame Rate: LinkedIn accepts anything from 10 fps to 60 fps. For most professional content, a standard 24–30 fps will look great.
• Bitrate: For the best quality playback, aim for a bitrate between 192 kbps and 30 Mbps.

Following these guidelines ensures your video looks as good on LinkedIn as it did in your editing software. For a more detailed breakdown, check out our guide on how to post a video on LinkedIn.

Choosing the Right Aspect Ratio and Resolution

Your video’s aspect ratio is key to how much space it takes up in the feed. The dimensions you choose should really depend on where you expect most people to be watching—on their phones or at their desks.

• Vertical (9:16 or 4:5): These are your go-to options for mobile. They fill up the screen and are much more immersive. Use a resolution of 1080x1920 (9:16) or 1080x1350 (4:5).
• Square (1:1): This is a safe and versatile choice that looks good on both mobile and desktop. A resolution of 1920x1920 pixels is perfect.
• Landscape (16:9): Best suited for more traditional, cinematic content that's likely to be viewed on a desktop. Stick with the standard 1920x1080 pixels.

Getting a handle on video specs across all platforms can be a huge help. This essential guide to social media video specs is a great resource for that. It’s no surprise that native video is booming on LinkedIn; we've seen it firsthand. The numbers back it up, too, with native video posts hitting a 5.60% average engagement rate in 2025—a solid jump from the year before. It just goes to show that authentic, in-feed video is what people want to see.

Carousel and Document Posts: The Deep-Dive Specs

Carousel and document posts are your secret weapon for holding attention on LinkedIn. They let you package a ton of value into a single, swipeable format, keeping your audience engaged far longer than a simple image ever could. But to get them right, you need to know the rules of the road.

These multi-page posts, which you upload as a single file, are proven performers. In fact, LinkedIn carousels are crushing it right now, boasting an average engagement rate of 24.42%. When you compare that to the 6.67% engagement for text-only posts, it's clear why they're so good at capturing and holding a user's interest.

Recommended Dimensions and Aspect Ratios

The single most important factor for a great document post is readability. Your design choices directly affect how easily someone can absorb your content, especially on a small mobile screen where most people will see it first.

• Square (1:1 Aspect Ratio): The go-to dimension is 1080 x 1080 pixels. This format looks crisp and clean on both mobile and desktop, making it a safe and reliable choice for just about any kind of content.
• Vertical (4:5 Aspect Ratio): To really stand out in the mobile feed, go with 1080 x 1350 pixels. This taller format takes up more screen real estate, which is a fantastic way to stop the scroll and pull people into your slides.

Pro Tip: Don't forget that your first page is your cover. It's the hook. It has one job: make people want to swipe. Use a killer headline, strong visuals, and a clear promise of what's inside.

File Requirements and Best Practices

Once your design is locked in, you have to make sure the file itself meets LinkedIn's technical specs. Getting this right prevents frustrating upload errors and ensures your content looks polished and professional.

The rules for the file itself are pretty simple:

• Maximum File Size: Keep it under 100 MB.
• Page Limit: You can pack in up to 300 pages.
• Supported File Types: LinkedIn accepts PDF, PPT, PPTX, DOC, and DOCX. Honestly, PDF is your best bet for making sure your fonts and layout look exactly as you designed them.

One last thing: always give your document a clean, descriptive title before you upload it. LinkedIn displays the file name at the bottom of the carousel viewer. A title like "Q4_Financial_Report.pdf" looks infinitely more professional than "Untitled_Document_Final_v3.pdf".

If you want to speed up the creation process, a dedicated LinkedIn carousel generator can handle a lot of the formatting work for you, freeing you up to focus on creating amazing content.

Getting Your Text Just Right: LinkedIn Character Limits and Truncation

While a great image or video grabs attention, it’s your words that seal the deal. The text gives context, tells the story, and ultimately, gets people to act. Knowing the character limits—and especially where your text gets cut off—is fundamental to making sure your message lands.

LinkedIn gives you a generous 3,000 characters for a standard post. That’s more than enough room for a deep dive, a detailed story, or a complex breakdown. But here's the catch: almost no one sees all of that at first glance. The real battle is won in the first couple of lines.

Nailing the "See More" Cutoff

This is probably the single most important text spec on LinkedIn. Your post gets shortened with a "...see more" link, and where that link appears changes depending on where someone is viewing it.

• On Mobile: The cutoff happens fast, right around 140 characters.
• On Desktop: You get a little more room to play with, with the break appearing at about 210 characters.

What does this mean for you? Your first sentence is your headline. It has to be punchy enough to stop the scroll and earn that click. You need to spark curiosity, make a bold statement, or pose a compelling question, all before you hit that 140-character limit.

Pro Tip: Always write for the mobile view first. If you can hook your reader in under 140 characters, you’ve optimized your post for everyone, everywhere.

Other Text Limits to Keep in Mind

The main post isn't the only place with a character counter. Other parts of LinkedIn have their own rules, and sticking to them keeps everything looking clean and professional.

Here are a few other key numbers to remember:

• Comments: When you're replying, you get 1,250 characters. That's plenty of space to add real value and have a meaningful conversation.
• LinkedIn Article Headline: The title for a long-form article needs to be 100 characters or less.
• LinkedIn Article Body: If you’re writing an article, you have a massive 125,000 characters to work with. This is where you can publish your most in-depth thought leadership pieces without holding back.

By working within these simple constraints, you make sure every word counts, from the initial hook to your final call to action.

Getting Your LinkedIn Profile and Company Page Specs Right

Think of your LinkedIn profile and company page as your digital handshake. While the posts in your feed are constantly changing, these core assets are the first thing people see. They're your foundation. If that first impression is a pixelated logo or a bizarrely cropped banner, it instantly cheapens your professional image.

These images are your storefront on the world's largest professional network. Making sure they're sharp, on-brand, and look good on every device isn't just a "nice-to-have"—it's essential for building a credible presence. Let's dig into the exact numbers you need for each part.

Personal Profile Image Specifications

Your personal profile is all about you. It's your direct connection to peers, recruiters, and clients, so the visuals need to be top-notch and reflect who you are professionally.

• Profile Picture: Stick to a 400 x 400 pixel image. LinkedIn frames this in a circle, so whatever is important—namely, your face—needs to be centered to avoid getting awkwardly cropped. The max file size is 8MB.
• Background Photo (Cover Image): The magic numbers here are 1584 x 396 pixels. This is a great piece of real estate to show off your brand, personality, or even a call-to-action. Just remember that it looks different on mobile than on a desktop. Always keep the most important stuff in the middle "safe zone" so nothing critical gets cut off.

It's also helpful to see how other networks handle their visuals. For example, looking at platform banner dimensions for sites like YouTube gives you a better sense of how to design for different online spaces.

Company Page Image Specifications

When it comes to your company page, consistency is everything. You want your brand to be instantly recognizable and professional, no matter where it shows up.

Key Insight: Remember, LinkedIn pulls your company page assets into other places, like job postings and when your employees list you as their employer. Using the right specs ensures your brand looks polished across the entire platform.

• Company Logo: The standard here is 300 x 300 pixels. This little square is your company's main identifier, so make it count.
• Cover Image: For company pages, the banner is much wider and thinner at 1128 x 191 pixels. This is a challenging space to design for, so you have to be clever with your visuals to make them work in such a tight horizontal format.

Advanced Strategies for Content Performance

Getting the technical specs right for your visuals and text is just the starting point. If you really want to stand out on LinkedIn, you need to understand the strategic side of the platform—how different content formats work together, when to post, and even who does the posting. Moving beyond the basics means looking at your content not as a series of one-off posts, but as a complete conversation.

Think of it this way: a balanced mix of formats keeps your audience from getting bored. A striking image one day, a deep-dive video the next, and a helpful carousel after that appeals to different people and how they like to consume content. It’s all about creating a cohesive experience that keeps them coming back.

The Power of Personal Profiles and Smart Timing

Here’s one of the most powerful, data-backed strategies I've seen: stop broadcasting everything from your company page. The numbers don't lie. When a real person shares a post from their personal LinkedIn profile, it gets 2.75 times more impressions and a whopping five times more engagement than the same post shared from a company page. It's a clear signal that LinkedIn prioritizes authentic, human-to-human connection over corporate announcements. You can dig into more of these eye-opening LinkedIn statistics and their impact to see for yourself.

Timing is just as critical. Engagement on LinkedIn isn't random; it consistently peaks on Tuesdays, Wednesdays, and Thursdays, especially between 10 AM and noon. Dropping your content within these high-traffic windows gives it the best possible chance of being seen and acted on by the people you want to reach.

Key Takeaway: The best LinkedIn strategies often empower key people on the team to build their personal brands. Their authentic voices will almost always outperform the official company page, creating a ripple effect that amplifies your message far more effectively.

Building a Balanced and Engaging Content Mix

A winning content calendar never feels repetitive. It works by thoughtfully mixing different post types to build and sustain momentum. While each format has its own linkedin post spec, it’s how you combine them that really creates a dynamic presence.

Here's a simple but effective weekly schedule to consider:

• Monday: Kick things off with a high-value carousel that breaks down a complex idea into easy-to-digest slides.
• Wednesday: Post a short, snappy video sharing a practical tip or a quick look behind the scenes.
• Friday: Spark a conversation with a thought-provoking text post paired with a single, powerful image.

And don't forget about LinkedIn's interactive tools. Polls are fantastic for grabbing quick engagement and learning what your audience is thinking. Things like LinkedIn Events or Live sessions can also act as powerful amplifiers for your main content, driving people back to your core message and making your feed feel much more alive.

LinkedIn Content Performance Comparison

Not all content types are created equal, and understanding their relative strengths is key to building a smart strategy. Some formats are built for broad awareness, while others excel at driving deep, meaningful interaction.

Here's a quick look at how different formats typically perform and where they fit best in your content plan.

Ultimately, the most successful strategies don't rely on a single format. They blend the high-impact storytelling of video, the educational depth of carousels, and the conversational spark of text posts to create a well-rounded and consistently engaging feed.

Got Questions About LinkedIn Specs? We've Got Answers.

It’s easy to get tangled up in the weeds of LinkedIn's technical specs. Even those of us who live and breathe this stuff need a quick reminder on the details now and then. Here are some of the most common questions I hear, with straightforward answers to get your content looking sharp.

Think of these specs as the final, professional polish on your work. Nailing the details, from image clarity to accessibility, is what separates good content from great content that truly performs.

What’s the Best Image Size for a LinkedIn Post?

This really comes down to your primary goal, but if you want to stop the scroll on mobile, you can't beat 1080 x 1350 pixels. This is a 4:5 aspect ratio, and that extra vertical height takes up more real estate on a phone screen, making your post much more prominent in the feed.

If you're looking for a reliable, all-around option that works perfectly on both desktop and mobile, a square image is your best friend. Stick with 1080 x 1080 pixels (a 1:1 ratio). It's a classic for a reason—it always looks clean and balanced.

Why Does My LinkedIn Video Look Blurry?

Ah, the dreaded blurry video problem. It’s incredibly frustrating and almost always boils down to one of two things. First, you might be uploading a video that was low-resolution to begin with. You have to start with a quality source file, so I always recommend an absolute minimum of 1080p (1920 x 1080 pixels).

The second culprit is often a low bitrate. Bitrate is just a measure of how much data is packed into your video file. If it’s too low, LinkedIn’s compression algorithms have to guess what to fill in, and you end up with pixelation. When you export your video, aim for a bitrate of at least 5-10 Mbps for 1080p footage to keep it looking crisp.

How Do I Add Alt Text to My Images on LinkedIn?

Adding alt text is one of those small steps that makes a massive difference. It's essential for accessibility, giving screen readers a description of your image for users with visual impairments. Plus, it’s a nice little boost for discoverability.

It's super simple to do:

1. Upload your image. In the post composer, you'll see it appear as a preview.
2. Click the "Alt text" button that shows up on the image thumbnail.
3. A small window will open. Just write a quick, clear sentence describing what’s happening in the image.
4. Hit "Save", and you're all set.

Taking that extra 15 seconds makes your content inclusive and more professional.

---

Ready to create perfectly sized, on-brand LinkedIn content in minutes? Postiv AI combines a brand-trained AI writer with a powerful carousel designer and scheduling tools. Skip the guesswork and start building authority today. Learn more at Postiv AI.