What Size Should My LinkedIn Post Be in 2026?

The right LinkedIn post size in 2026 depends on the format: 1200 by 628 pixels for a single horizontal image, 1080 by 1080 pixels square, 1080 by 1350 pixels for a taller portrait carousel slide, and vertical video between a 9:16 and 16:9 ratio. Every dimension below is checked against LinkedIn's own specification pages, linked at each figure.

I design and export every image on this site myself, and I check LinkedIn's own specification pages before every client carousel or profile refresh, because a blurry banner or a cropped carousel slide is an easy, avoidable mistake. This guide walks through the verified size for every LinkedIn format: single images, multi-image posts, document carousels, video, link previews, article covers, and every banner or logo LinkedIn asks you to upload, plus the character limits that decide how much of your post actually gets read.

What LinkedIn post size means, and why it keeps shifting

LinkedIn post size means the pixel dimensions, aspect ratio and file size LinkedIn expects for each format it supports: a single image, a multi-image post, a document carousel, native video, a shared link, an article, and every banner or logo on a profile or Page. Upload outside those ranges and LinkedIn crops, stretches or compresses the file automatically, usually worse than if you had sized it correctly yourself.

The numbers shift more often than most guides admit. LinkedIn has changed its recommended company Page cover size at least once in the past few years, and its video specs are published separately for ordinary posts and for paid Sponsored Content, which is where a lot of the conflicting numbers online come from. Every figure in this guide is dated to September 2026 and linked to where I checked it, so you can re-verify anything before a big print run or a paid campaign.

This matters more on a phone than a laptop. Most LinkedIn engagement happens in the mobile app, so an image with the wrong ratio does not just look slightly off, it gets cropped by LinkedIn's own feed container before anyone reads your caption. Getting the size right the first time saves a re-upload and the awkward gap where a carousel's first slide is the only one anyone actually sees.

The 2026 LinkedIn size cheat sheet

Keep this table open while you design. It covers every format LinkedIn currently supports, with the recommended size, the ratio, and the practical limit, sourced to LinkedIn's own Marketing Solutions and Help pages linked through this guide.

Two things to note before you use any of this. First, recommended is not the same as minimum: LinkedIn will accept a smaller file and simply stretch it, which is where soft, pixelated images come from. Second, a document carousel and a multi-image post are two different upload types on LinkedIn and people confuse them constantly, which is why I have covered each on its own below.

Single image posts: square, portrait and horizontal compared

A single image post gives you three practical ratio choices: horizontal at 1200 by 628 pixels (1.91:1), square at 1200 by 1200 pixels (1:1), or portrait at roughly 720 by 900 pixels (4:5). LinkedIn's own Marketing Solutions specification page lists all three under its single image ad format, which shares the same feed rendering as an ordinary post.

A 1.91:1 horizontal image is the safest default if it needs to make sense on both desktop and mobile without cropping, and it is the same ratio LinkedIn uses for shared link thumbnails, so a graphic designed once often works twice. Square trades a little width for consistency: it looks identical whether someone is scrolling a laptop feed or a phone, which is why most of my own carousel covers start square.

Portrait is the format most creators skip and shouldn't. Because LinkedIn's mobile feed is a vertical scroll, a 4:5 portrait image occupies noticeably more screen height than a 1.91:1 horizontal image of the same file width, which means more visual weight before a thumb can scroll past it. If mobile reach matters more to you than symmetry on desktop, design portrait first.

One caution on file size: LinkedIn caps a single post image at 5 MB regardless of ratio, and accepts JPG, PNG or WebP. That ceiling sounds generous until you export a full-size portrait image straight out of a design tool at maximum resolution. Compress before you upload rather than let LinkedIn compress it for you.

Multi-image posts and document carousels

Multi-image posts and document carousels look similar in the feed but are built differently, and the size rules differ too. A multi-image post is a set of separate JPG or PNG files. LinkedIn's own layout engine decides how they grid based on your first image's orientation, so a wide first image sits above the rest while a square or portrait first image sits beside them.

A document carousel, the swipeable PDF format people usually mean when they say a LinkedIn carousel, is a single uploaded file, not separate images. Design each slide at 1080 by 1080 pixels for a square carousel or 1080 by 1350 pixels for portrait, export the whole deck as one PDF, and LinkedIn turns each page into a swipeable card. My separate LinkedIn carousel post guide covers the slide-by-slide structure; this guide only covers the pixels.

LinkedIn does not publish one definitive page count or file size ceiling for document posts in a single spec sheet the way it does for image ads, and I would treat anything reported past a few hundred pages or 100 MB as a technical ceiling you will never actually reach. Engagement drops off long before the upload limit does. I keep client carousels to 8 to 12 slides and have not seen a longer one outperform a tighter one.

A practical example: say a Baner gym is posting a five-exercise form-check carousel. Six slides at 1080 by 1350 pixels, portrait, exported as one PDF, keeps every frame sharp on a phone and gives each exercise its own uncluttered card, rather than cramming two exercises onto one slide to save a page.

Video posts: aspect ratio, length and file size

LinkedIn accepts video anywhere between a 9:16 vertical ratio and a 16:9 horizontal ratio, with square 1:1 also supported, and its video ads specification page lists the exact pixel ranges: a minimum of 360 pixels on the short side up to 1920 pixels on the long side.

For an ordinary native video post, vertical 9:16 (1080 by 1920 pixels) or the slightly shorter 4:5 (1080 by 1350 pixels) uses the most mobile feed height, the same advantage portrait images have over horizontal ones. A 16:9 ratio still makes sense for a screen recording or a webinar clip where wide content actually needs the width.

On length and file size, LinkedIn's published Sponsored Content video specification allows anywhere from 3 seconds to 30 minutes and 75 KB to 500 MB, encoded as MP4 with AAC or MPEG4 audio. That is the documented ad specification; the native composer's own upload ceiling for an ordinary post is not published in one place, so if a file gets rejected, compress it and try again rather than assume the platform is broken.

Keep the first three seconds meaningful without sound. Most people scroll with audio off, so burn captions into the file or turn on LinkedIn's own auto-captions, and put your hook on screen in the first frame rather than only in the audio.

Link previews, article covers and profile or Page banners

A shared link pulls its preview image automatically from the page's own metadata, at 1200 by 627 pixels, a 1.91:1 ratio, per LinkedIn's image specification page for Pages and Career Pages. If your website does not set an og:image tag, LinkedIn either shows a blank preview or grabs whatever image sits highest on the page, so check this on your own site before you rely on it for a launch post.

A LinkedIn Article's cover image works at a different, larger size: 1920 by 1080 pixels, cropped to 16:9, per LinkedIn's own help page on adding images to an article. It appears both at the top of the article and as the thumbnail when the article is shared into the feed, so keep the main subject centred rather than pushed to one edge.

Personal and company banners are different sizes with different rules. A personal profile background photo is 1584 by 396 pixels, under 8 MB, JPG or PNG, confirmed on LinkedIn's help page for changing your profile background photo. A company Page cover image currently sits at 1512 by 256 pixels on LinkedIn's own specification page for Pages, a change from the 1128 by 191 pixel figure still repeated on a lot of older design guides, so if you manage a LinkedIn company page for a client, use the current number.

Logos are simpler: 400 by 400 pixels for both a personal profile photo and a company Page logo, with LinkedIn accepting a minimum of 268 by 268 pixels for the Page logo specifically. Keep the subject centred in the square, since LinkedIn displays it inside a circle in most placements and anything near the corners gets clipped.

Which size wins the most space in the mobile feed

If mobile reach is the goal, portrait wins on pure pixel real estate. A 1080 by 1350 pixel image at 4:5 takes up roughly twice the vertical space of a 1200 by 628 pixel horizontal image at the same feed width, simply because the ratio is taller. More vertical space means a longer pause before a thumb can scroll past.

This is not a universal rule. A wide screenshot, a before-and-after comparison, or a chart genuinely needs the horizontal space, and forcing it into a portrait crop just to chase feed height makes the image harder to read, which defeats the purpose. Pick portrait by default for a talking-head video, a quote card or a single-subject photo, and keep a wider frame for anything that is naturally wide.

For text safety inside any of these formats, keep headlines and key numbers away from the outer tenth of the frame on every edge. LinkedIn's own profile photo overlaps the bottom-left corner of a personal banner, and a Page's mobile crop trims more of a wide banner's edges than the desktop view does, so centre-weighted design survives both.

Character limits: posts, comments, headline and About section

Pixels are only half of size on LinkedIn. A post holds up to 3,000 characters, but LinkedIn's feed truncates it after roughly 140 to 210 characters, depending on device, before showing a see more link, which is why the first two lines matter more than the other 2,800 characters combined. My guide to formatting LinkedIn posts covers that hook in depth.

A comment allows up to 1,250 characters, a headline allows 220, and the About section allows 2,600, though only the first 300 or so show before its own see more cutoff. None of these numbers are published together in a single LinkedIn Help article; they are consistently reported across current LinkedIn formatting trackers and match the 3,000-character ceiling built into the free LinkedIn text formatter on this site, so treat them as reliable at the time of writing rather than officially documented.

The practical takeaway is the same across every field: write the part that shows before the cutoff first, then fill in the rest. For the headline specifically, my LinkedIn headline examples guide covers exactly where the 220-character field gets cut off in search results versus on your own profile, and for the post body itself, spacing and line breaks decide whether anyone reads past line two, which is the whole subject of my LinkedIn line breaks guide.

How to size a LinkedIn image in Canva

You do not need Photoshop for any of this. Here is the exact routine I use for a client's carousel or banner, from a blank canvas to an upload-ready file.

Step 1: Set a custom canvas to the exact size

Open Canva, choose Custom size, and type the exact pixel dimensions from the table above rather than picking a preset LinkedIn post template, since Canva's own presets lag behind LinkedIn's current specification more often than you would expect. For a document carousel, set every page to the same 1080 by 1080 or 1080 by 1350 canvas before you add a single slide.

The common mistake here is resizing an existing design instead of starting fresh: Canva's resize tool stretches text and logos rather than reflowing them. Check by zooming into any text element after resizing; if letters look stretched rather than crisp, start the canvas over.

Step 2: Mark a safe zone before you design

Add a rectangle guide roughly a tenth of the way in from every edge and lock it to the back of the canvas. This is where a profile photo, a caption overlay or a mobile crop is most likely to hide part of your image, so nothing important should sit past that line.

Skipping this step is how logos end up half-cropped in a company Page banner: the desktop preview looks fine, then the mobile app crops in tighter and clips the edge. Verify by switching Canva's preview between desktop and mobile-width views before exporting.

Step 3: Design inside the safe zone, biggest element first

Place your largest element, a face, a headline or a product shot, first and centred, then build supporting text and icons around it. For a carousel, repeat your slide number or a thin accent bar in the same position on every slide so the swipe feels designed, not assembled.

A common carousel mistake is changing font size between slides. Set a type scale once, headline, subhead, body, and reuse it, or the deck reads like five different people made it. Verify by lining up all slides in Canva's grid view and checking the text sits at consistent heights.

Step 4: Export at the right format and check the file size

Export as PNG for text-heavy graphics and JPEG for photographs, since PNG keeps text edges sharp while JPEG compresses photos smaller without visible loss. For a document carousel, export as PDF, standard quality rather than print quality, which keeps the file well under LinkedIn's limit without a visible drop in sharpness.

Print-quality PDF exports from Canva can run past 20 MB for a ten-slide deck, which uploads slowly on a mobile connection and sometimes times out. Verify by checking the exported file's size before you open LinkedIn; if it is over 10 MB for an ordinary carousel, drop the export quality one notch.

Step 5: Preview on your phone before you publish

Open your own profile in the LinkedIn mobile app right after posting, or ask a colleague to check it on theirs, and confirm that no text sits inside the cropped edge, the first carousel slide reads on its own, and any caption burned into a video is legible at phone size.

Skipping the mobile check is the single most common size mistake on this list, because every design tool previews on a desktop-sized canvas by default. If something looks tight on your phone, it will look worse on someone else's smaller or older device, so fix it before publishing rather than after.

Common mistakes with LinkedIn image and video sizing

A few sizing mistakes show up in almost every account I review, and all of them are quick to fix once you know to look for them.

• Resizing an old horizontal graphic into a square canvas at the last minute, which crops the subject instead of reframing it properly.
• Uploading a company Page cover designed for the older 1128 by 191 pixel spec, then wondering why it looks soft against the current 1512 by 256 pixel display.
• Treating a document carousel's page count as a content plan: more slides is not more value, it is more chances for someone to swipe away before the point lands.
• Skipping the mobile preview and finding out after a few hundred people have already seen a cropped logo or a cut-off headline.
• Exporting video at close to the 30-minute ceiling because the specification allows it, when the actual hook needed to land in the first three seconds.

None of this is a ranking trick. The right LinkedIn post size will not rescue a weak idea, and a slightly-off crop will not sink a genuinely useful post, so treat this guide as removing friction rather than as the reason a post performs. For the formatting side, spacing, bold text and where line breaks actually work, that lives in my LinkedIn line breaks guide and my how to format LinkedIn posts guide.

Frequently asked questions

What is the best image size for a LinkedIn post?

The safest single-image size is 1200 by 628 pixels horizontal at a 1.91 to 1 ratio, which LinkedIn's own ad specification page lists as the recommended size for cross-device delivery. A 1200 by 1200 pixel square works just as well and looks identical on desktop and mobile. For more vertical space in the mobile feed specifically, use a 4:5 portrait image instead, since it takes up noticeably more screen height than a horizontal image of the same width.

What size should a LinkedIn document carousel be?

Design each slide at 1080 by 1080 pixels for a square carousel or 1080 by 1350 pixels for a taller portrait carousel, then export the whole deck as a single PDF rather than separate images. LinkedIn does not publish one exact page or file size ceiling for document posts, though current reports put it well past 100 pages and 100 megabytes. Engagement drops off long before any technical limit does, so keep a working carousel to roughly 8 to 12 slides.

What is the LinkedIn video size and length limit?

LinkedIn's published video specification allows an aspect ratio anywhere between 9:16 vertical and 16:9 horizontal, a length from 3 seconds to 30 minutes, and a file size from 75 kilobytes up to 500 megabytes, encoded as MP4. For an ordinary post specifically, a vertical 9:16 or 4:5 ratio uses more of the mobile feed's height than a wider ratio does, the same advantage a portrait image has. Keep the first three seconds meaningful without sound, since most people scroll with audio off.

How many characters can a LinkedIn post be?

A LinkedIn post allows up to 3,000 characters, but the feed only shows roughly the first 140 to 210 characters before cutting the rest behind a see more link, depending on the device. A comment allows up to 1,250 characters, a headline field allows 220, and the About section allows 2,600, though only the first few hundred show without a tap. None of these limits are published together in one place, so treat them as consistently reported rather than officially documented by LinkedIn.

What size should a LinkedIn profile banner or company Page cover photo be?

A personal profile background photo works best at 1584 by 396 pixels, under 8 megabytes, in JPG or PNG, confirmed on LinkedIn's own help page for background photos. A company Page cover image currently sits at 1512 by 256 pixels on LinkedIn's specification page for Pages, which has replaced the older 1128 by 191 pixel figure still repeated on a lot of design guides. Both use a 400 by 400 pixel logo or profile photo alongside the banner.

Related guides

• LinkedIn Line Breaks: Posts, Headline, About and DMs
• How to Format LinkedIn Posts in 2026
• LinkedIn Carousel Post Guide
• LinkedIn Marketing Guide for 2026
• LinkedIn Algorithm 2026 Explained
• LinkedIn Hook Formulas That Stop the Scroll
• LinkedIn Headline Examples
• Free LinkedIn Text Formatter

Your next step

Save the cheat sheet above and run your next carousel or banner through it before you export. If you want a second pair of eyes on a full LinkedIn content system built around it, from sizing to posting cadence, get in touch and I will map it out with you.