LinkedIn Post Sizes Guide: Every Dimension That Matters

Okay, let’s be honest: the fastest way to make a brilliant LinkedIn post look sloppy is to upload it at the wrong size and watch the platform lop off half your headline. So here’s the short, honest answer this linkedin post sizes guide is built around: think in aspect ratios first, not exact pixels. A square (1:1) or portrait (4:5) image, a vertical or square video, a portrait document carousel, and a link preview with a wide (roughly 1.91:1) thumbnail will cover almost everything you post. Get the shape right and the pixels mostly take care of themselves.

I promise this gets easier once you stop chasing a single “perfect” number. Platforms tweak their display rules constantly, and what renders beautifully on a laptop can get cropped on a phone. So we’re going to lock in the ratios that survive those changes, then give you commonly recommended pixel figures as a starting point (verify the current specs before a big launch — LinkedIn quietly updates them).

Why aspect ratio beats pixel-perfection in this LinkedIn post sizes guide

Here’s the part nobody tells you: LinkedIn doesn’t show your image at the exact pixel dimensions you uploaded. It scales and, when the shape doesn’t fit its display frame, it crops. That’s why two people can upload the “correct” size and get totally different results — one designed to a ratio, the other to a rigid pixel count that stopped matching the layout months ago.

Aspect ratio is the relationship between width and height (width:height). A 1:1 image is a perfect square. A 4:5 image is a little taller than it is wide — portrait. A 16:9 image is a wide landscape rectangle, like a TV screen. When you design to a ratio, you can export at whatever resolution keeps things crisp, and your composition stays intact whether LinkedIn displays it at 500 pixels wide or 1,200.

The other reason ratio matters more than ever: most of your audience is on a phone. Mobile feeds are narrow and vertical, so taller content (portrait) simply occupies more of the screen as someone thumbs past. A wide landscape image can shrink to a thin strip that’s easy to scroll right by. So when in doubt, go taller — within reason.

The safe-zone habit that saves you every time

Before you export anything, keep your essential elements — faces, headlines, logos, the punchline — inside a centered “safe zone,” away from the very edges. If LinkedIn crops a sliver off the top or sides on some device, your message survives. This one habit quietly fixes ninety percent of “why is my text cut off?” panic.

LinkedIn image sizes: the aspect ratios that actually matter

Let’s walk through images, because that’s what most people post. Remember, these pixel numbers are commonly recommended starting points — verify the current specs in LinkedIn’s own help pages before a major campaign.

Single image posts

For one image in a feed post, you’ve got three shapes worth knowing:

• Square (1:1) — the reliable workhorse. Commonly recommended around 1200 x 1200 px. It looks balanced on desktop and grabs solid real estate on mobile.
• Portrait (4:5) — the space-maximizer. Commonly recommended around 1080 x 1350 px. This is my go-to when I want the post to feel bigger in a scrolling feed.
• Landscape (1.91:1) — the wide, article-style shape, commonly recommended around 1200 x 628 px. Great when your visual is genuinely horizontal, but it takes up less vertical space, so use it on purpose.

My honest default? Design square or portrait unless the image is truly a wide scene. You’ll almost always win more attention.

File types and resolution (the boring bit that keeps you crisp)

Ratio decides the shape, but file type and resolution decide whether your post looks crisp or muddy. For photos and images with lots of color and gradient, JPG keeps the file size sensible while looking clean. For graphics with sharp text, flat color, logos, or transparency, PNG holds those edges without the fuzzy artifacts JPG can introduce around lettering. When you export, aim for a resolution comfortably above the size LinkedIn displays — designing a square around 1200 px wide gives the platform room to scale down cleanly rather than stretching a tiny file up into a blurry mess. LinkedIn will compress whatever you upload, so start high; you can’t add sharpness back after the fact. And avoid layering fine, thin text over a busy photo — compression is least kind to exactly that combination, and it’s the first thing to go grainy.

Multi-image posts

When you attach two or more images to a single post, LinkedIn arranges them in a grid or collage, and it will crop each one to fit its slot. This is where the safe-zone habit earns its keep. The cleanest approach is to make all your images the same aspect ratio — all square is the most predictable — so the collage looks intentional instead of chaotic. Assume tight cropping and keep faces and text centered in each frame.

Profile and company visuals (so the whole picture is consistent)

Your posts don’t live in a vacuum — they sit next to your profile photo and banner. A profile photo displays as a circle, so anything square (commonly recommended around 400 x 400 px, and it can be larger) works, but keep your face centered so the circular crop doesn’t clip your forehead or chin. Your profile banner and Company Page cover are wide, landscape images, and they crop differently on mobile versus desktop. Because the banner is its own craft — with logos, taglines and safe zones to juggle — I’ve got a dedicated walkthrough for that. If you’re setting up or refreshing your header, read the LinkedIn banner image guide so your header and your feed feel like the same brand.

LinkedIn video sizes in this LinkedIn post sizes guide

Video on LinkedIn rewards the same instinct as images: go square or vertical so it fills more of a phone screen. Here are the shapes to reach for:

• Square (1:1) — versatile, reads well on desktop and mobile.
• Vertical portrait (4:5) — a comfortable feed-native shape that doesn’t feel as aggressive as full vertical.
• Full vertical (9:16) — best for short, punchy, mobile-first clips where you want the whole screen.
• Landscape (16:9) — fine for longer, more produced videos, especially if people might watch on a larger screen, but it’s smaller in a mobile feed.

Two things matter more than the exact resolution. First, captions: a huge share of feed video is watched with the sound off, so burn in captions or add them so your message lands silently. Second, the first three seconds: open with motion or a bold on-screen line, because that’s what stops the scroll. Keep your key visuals and text centered so nothing important sits in a zone that might get cropped on a different device.

A couple more practical notes. Keep feed clips short and tight — a focused sixty-to-ninety-second video usually outperforms a rambling five-minute one, because attention on a scrolling feed is brutal. If you’re teaching something genuinely long, that’s a signal to split it into a series of shorter posts rather than one marathon. And think about your video’s thumbnail or opening frame the same way you’d think about an image: it’s the still that represents your video before someone taps play, so make that first frame legible and enticing, not a mid-blink freeze of your face. Export at a high, clean quality — LinkedIn compresses video too, so a soft source file only gets softer.

LinkedIn document carousels: the quietly powerful format

Document posts — where you upload a multi-page PDF that people swipe through in the feed — are one of LinkedIn’s most underrated formats. They’re perfect for step-by-step teaching, mini-guides, and “save this for later” content. The single most important sizing decision is the page shape.

Because the in-feed document viewer is taller than it is wide on mobile, design your pages in portrait orientation so each slide fills that viewer. A 4:5 feel works, and many creators go a touch taller (toward 3:4) for a proper page feel. Keep generous margins, one clear idea per page, and large, legible type — assume someone reading on a small phone in bad lighting. Then export the whole thing as a PDF and upload that; LinkedIn turns it into the swipeable carousel automatically.

There’s real craft to structuring these — the cover hook, the flow, the last-slide call to action — so if this format excites you (it should), go deep with the LinkedIn document post carousel guide. Sizing gets you in the door; structure gets you the saves and shares.

One sizing detail worth underlining: build every page at the same dimensions. If page three is a slightly different size than page two, the viewer jumps and resizes as people swipe, which feels janky and cheap. Set up a single portrait canvas — a template — and design every slide inside it, so the swipe feels like flipping through one clean deck. And because people often view these tiny on a phone, resist the urge to cram. One headline, one idea, maybe one supporting line per page. White space isn’t wasted space here; it’s what makes a small screen readable.

Quick reference table

Format	Recommended aspect ratio	Commonly recommended pixels (verify current)	Why
Single image (square)	1:1	~1200 x 1200	Balanced, reliable feed presence
Single image (portrait)	4:5	~1080 x 1350	Maximizes mobile screen space
Single image (landscape)	1.91:1	~1200 x 628	For genuinely wide visuals
Video (square/vertical)	1:1 or 4:5 / 9:16	Design to ratio; keep centered	Fills mobile, stops the scroll
Document carousel page	Portrait (4:5 to 3:4)	Design tall, export as PDF	Fills the swipe viewer
Link preview thumbnail	~1.91:1	~1200 x 628	Controlled by your OG image

Link previews and character limits: the details people forget

When you paste a URL into a post, LinkedIn generates a preview card with a thumbnail, title and short description. You don’t upload that thumbnail directly in the post — it’s pulled from the destination page’s Open Graph (og:image) tag. So if your shared link looks ugly or blank, the fix lives on the webpage, not in LinkedIn. Aim for an OG image around a wide 1.91:1 ratio (commonly recommended near 1200 x 628 px) so the card renders full and clean.

There’s a small but meaningful nuance here: a native upload almost always looks and performs better than a bare link. If a visual is the point, upload the image, video or document directly rather than relying on a link’s auto-generated card, which is smaller and less controllable. Save the link-preview format for when you genuinely want to send people off-platform to read an article — and even then, some creators put the link in the first comment instead, keeping the main post visual and clean. Test both with your own audience and keep whatever earns more engagement.

Now, the text. LinkedIn gives you a generous character allowance in the body of a post — thousands of characters — but that’s not the number that matters most. What matters is that only the first ~140 characters (roughly two short lines) show before the “…see more” cutoff on many screens. Those opening words are your headline. Front-load a hook, a bold claim, or a question, and put your first line break where it earns a click. Hashtags are best kept to a small, relevant handful rather than a wall.

If you’re thinking about all of this at the level of building an actual presence — profile, Page, content mix, cadence — the sizing details slot into a much bigger picture. When you’re ready to zoom out, how to use LinkedIn for business ties the formats to a real strategy. And for the wider view across every network, the social media marketing hub is your map.

How do you find the current, correct LinkedIn size?

Here’s the method I actually use, because specs change and I’d rather teach you to fish. First, check LinkedIn’s own help center or the upload dialog — sometimes it hints at recommended dimensions right there. Second, do a test post from a spare moment: upload your image, preview it on both desktop and your phone before it goes public, and see what crops. Third, keep a small personal cheat sheet of the ratios that consistently render well for your content, and update it whenever you notice a change. That living note beats any static chart, including this one.

One more reassurance, because I know sizing can feel fiddly: you will not get penalized for a slightly imperfect dimension. LinkedIn won’t reject a post that’s a few pixels off, and no one scrolling past is measuring your aspect ratio with a ruler. What they notice is whether the image looks sharp, whether the text is readable, and whether the whole thing feels considered. So aim for the right shape, keep it crisp, protect your safe zone, and let go of the pressure to hit a magic number. Consistency and clarity win far more often than pixel-perfection ever does.

The point of designing to ratio is that these little platform updates stop scaring you. A square is a square whether LinkedIn shows it at 500 or 1,200 pixels wide.

How do you reuse one design across LinkedIn and other networks?

Here’s a lovely side effect of thinking in ratios: it makes repurposing almost effortless. A 1:1 square works on LinkedIn, Instagram, Facebook and more. A 4:5 portrait travels beautifully across feeds too. A 9:16 vertical video slots into LinkedIn, Instagram Reels, TikTok and YouTube Shorts. So instead of remaking every asset from scratch for every network, you can design a small set of shapes and reuse them widely — trimming your workload without cheapening the result.

The trick is to design the most flexible shape for your core asset, then make small tweaks per platform rather than starting over. For example, a square graphic with a centered safe zone will survive nearly any feed. A vertical video with centered captions can be posted in several places with only the caption text changed to match each audience. This is where a lot of the exhausting part of content creation quietly disappears — you’re not sizing the same idea eleven different ways, you’re sizing it two or three smart ways and reusing.

Just don’t fully copy-paste the words across networks. LinkedIn readers expect a slightly more professional, insight-forward tone than, say, a casual platform. Same visual, tailored caption. The shape carries; the voice adapts.

How do you know which sizes actually perform?

Sizing is craft, but performance is evidence — and this is where you stop guessing. After you’ve posted consistently for a few weeks, look at your own analytics and compare like with like. Did portrait images earn more dwell time than landscape? Do square videos hold viewers longer than horizontal ones? Do document carousels rack up more saves than single images? Your audience will tell you what shapes they prefer, and it won’t perfectly match anyone else’s data — which is exactly why chasing generic “best size” numbers online is less useful than reading your own results.

Set up a tiny experiment: for two weeks, post the same kind of content in one shape, then switch to another shape for the next two weeks, keeping topic and timing roughly steady. Compare reach, engagement and saves. That simple A/B habit turns “I think portrait does better” into “portrait earns me measurably more dwell time,” and then you design with confidence instead of superstition. Honest measurement beats any chart — including the one in this guide.

A simple workflow you can start today

Let’s make this practical. Here’s a five-step routine that keeps every post sharp:

• 1. Pick the shape first. Before you design, decide: square image, portrait image, vertical video, or portrait document? Choose based on the format, not habit.
• 2. Design to the ratio with a centered safe zone. Keep text, faces and logos away from the edges.
• 3. Export high-quality. Use a clean, high-resolution export in the right ratio so nothing looks soft after LinkedIn compresses it.
• 4. Preview on mobile. Look at it on a phone-sized frame before publishing. This catches almost every cropping surprise.
• 5. Schedule it correctly-sized. Load your properly shaped post into a scheduler, set the time, and let it auto-publish so a good post doesn’t die waiting for you to be free at 9 a.m.

That last step is where a lot of great content quietly falls apart — you make something beautiful and correctly sized, then forget to post it at a good time. That’s exactly the gap a scheduler closes.

Common LinkedIn sizing mistakes (and the easy fixes)

A few traps I see all the time, so you can skip them:

• Uploading wide landscape for everything. It shrinks on mobile. Fix: default to square or portrait unless the image is genuinely horizontal.
• Text jammed against the edges. It gets clipped by cropping. Fix: use a centered safe zone.
• Mixed ratios in a multi-image post. The collage looks messy. Fix: make all images the same shape, ideally square.
• Landscape document pages. They leave big empty bands in the viewer. Fix: design portrait PDF pages.
• Ignoring the link preview. A blank or ugly card kills clicks. Fix: set a proper OG image on the destination page.
• Burying the hook. The first line is your headline. Fix: front-load it before the “see more” cut.

None of these require design skill — just the habit of choosing the shape on purpose. You’ve got this.

Putting this LinkedIn post sizes guide into practice

If you remember one thing from this whole guide, let it be this: shape first, pixels second, mobile always. Choose square or portrait for images, square or vertical for video, portrait pages for documents, and a wide OG image for link previews. Keep your important stuff centered, preview on a phone, and schedule it so it actually goes out. Do that, and your LinkedIn feed will look intentional and professional without you ever memorizing a single pixel count that’s just going to change next quarter anyway.

And breathe — you don’t have to get this flawless on day one. Start with square and portrait, keep your good stuff centered, glance at a phone preview before you hit publish, and let a scheduler carry the timing. Everything else is refinement. You’re going to do great.