Mastering LinkedIn Ad Sizes: A Comprehensive Guide for UK Marketers

By Stephen (linkedin ad sizes) on June 29, 2025

Getting your ads just right on LinkedIn can feel a bit like a puzzle sometimes. It's not just about what you say, but how it looks. If your images are all squished or cut off, people probably won't pay much attention. This guide is here to help UK marketers figure out all the bits and bobs of LinkedIn ad sizes. We'll go through everything, from the tiny text ads to the big video ones, so your campaigns actually hit the mark. It's all about making sure your message looks good and gets seen, which is pretty important for any marketing effort.

Key Takeaways

Getting your LinkedIn ad sizes correct really stops your images from looking bad.
There's a perfect size for every type of LinkedIn ad, and finding it helps your ads work better.
The right LinkedIn ad sizes can make a big difference in how well your ads perform.
Different ad types on LinkedIn, like single image or video, all have their own specific size needs.
Even small things, like aspect ratios and file types, are important for making your LinkedIn ads look good.

Cracking The Code: Why LinkedIn Ad Sizes Matter

Ever uploaded an ad only to discover it looks like a postage stamp on desktop and a giant blob on mobile? Been there, mate. Getting your ad dimensions right isn’t just nit-picking—it’s the difference between looking pro and looking like you forgot to read the instructions.

No More Squashed Images: Getting Your LinkedIn Ad Sizes Spot On

Remember that time your logo looked like a sad potato? Yeah, me too. If you’re not using the right pixels, your images can get horribly stretched or chopped off. Here’s where most folks trip up:

Uploading a tiny image and hoping LinkedIn will miraculously upscale it. Spoiler: It won’t.
Using a weird ratio so half your text is off-screen.
Ignoring mobile view—because who checks that, right?

Get your dimensions wrong and your ad will look like it’s gone through a blender.

The Goldilocks Zone: Finding The Perfect LinkedIn Ad Sizes

It’s all about hitting that ‘just right’ spot. Too big and your file takes ages to load; too small and your visuals turn into a pixelated mess. The ideal aspect ratio and pixel count let you shine without the lag.

Problem	Too Big	Too Small
Load Time	Snail’s pace	Lightning quick but fuzzy
Image Clarity	Crystal clear (but heavy)	Grainy disaster
User Experience	Frustrated clicks	Squint and scroll

Wanna geek out on exact figures? Check out our notes on LinkedIn image sizing to nail those specs every time.

Beyond The Bling: Why LinkedIn Ad Sizes Impact Performance

It’s not just about looking pretty—size affects everything from load speed to click-through rates. Try this:

Faster load = fewer people hitting the back button.
Proper framing = your call-to-action actually gets seen.
Mobile optimisation = happy scrollers on the go.

If your ad doesn’t fit right, people won’t even stick around to read your brilliant copy.

In the end, spending a few extra minutes on the right dimensions saves you hours of troubleshooting—and maybe even a few grey hairs.

The Grand Tour: Different LinkedIn Ad Sizes For Every Occasion

Right, buckle up, because we're about to go on a whirlwind tour of all the different LinkedIn ad sizes you can play with. Think of it as a sartorial journey, but for your marketing campaigns. You wouldn't wear the same outfit to a wedding as you would to the pub, would you? Same logic applies here. Let's find the perfect fit for every occasion.

Single Image Ads: The Classic LinkedIn Ad Sizes

Ah, the single image ad – the reliable black suit of the LinkedIn world. It's simple, it's effective, and when done right, it can really make an impact. The key here is to make sure your image is top-notch. No blurry photos pinched from Google Images, please! We're talking professional-grade visuals that scream 'trustworthy' and 'competent'.

Here's what you need to keep in mind:

Dimensions: Aim for 1200 x 627 pixels. This is the sweet spot. Think of it as the Goldilocks size – not too big, not too small, just right.
Aspect Ratio: 1.91:1. Keep this in mind when you're cropping or resizing your image. Nobody wants a stretched or squashed logo.
File Format: JPG or PNG are your best bets. Keep the file size under 5MB to avoid slow loading times.

Remember, your image is often the first thing people see, so make it count. A well-chosen image can stop scrollers in their tracks and entice them to learn more about your LinkedIn profile.

Carousel Ads: A Gallery Of LinkedIn Ad Sizes

Fancy showing off a bit more? Carousel ads are your answer. Think of them as a mini-website within LinkedIn, allowing you to tell a story across multiple cards. They're great for showcasing different products, highlighting various features, or walking people through a process.

Here's the lowdown:

Cards: Use between 2 and 10 cards. Any more and you risk losing people's attention.
Image Size: 1080 x 1080 pixels per card. Square is the name of the game here.
File Size: Keep each card under 10MB. Nobody wants to wait an age for your carousel to load.

Carousel ads are a fantastic way to increase engagement and drive traffic. Just make sure each card has a clear purpose and a compelling call to action. Think of it as a curated exhibition of your best stuff.

Video Ads: Lights, Camera, LinkedIn Ad Sizes!

Alright, let's get cinematic! Video ads are where it's at if you want to really grab attention. They're engaging, they're dynamic, and they can convey a lot of information in a short space of time. But, like any good film director knows, size matters.

Here's what you need to know about LinkedIn best practises for video ads:

Resolution: 1920 x 1080 pixels is ideal for a crisp, professional look. Nobody wants to watch a blurry video.
Aspect Ratio: 16:9 is the standard widescreen format. Stick to this unless you have a very good reason not to.
File Size: Keep it under 200MB. Nobody wants to chew through their data allowance watching your ad.
Duration: Aim for 15-30 seconds. Attention spans are short, so get to the point quickly.

Video ads can be incredibly effective, but they require a bit more planning and effort than static images. Make sure your video is well-produced, has a clear message, and includes a strong call to action. Think of it as your chance to become the next Spielberg of LinkedIn advertising. Just, you know, with slightly smaller budgets.

Ad Type	Recommended Size
Promoted Post	1200 x 627 pixels
Lead Gen Form	1200 x 627 pixels
Event Ad	1200 x 627 pixels

Message Ads: Sliding Into DMs With The Right LinkedIn Ad Sizes

Right, let's talk about getting into people's inboxes without being that person. Message Ads on LinkedIn are your chance to have a one-on-one chat with potential clients or leads. But, like any good conversation, it's all about how you present yourself. And in this case, that means nailing the right LinkedIn ad sizes.

Conversation Ads: Chatting Up Prospects With LinkedIn Ad Sizes

Conversation Ads are where things get a bit more interactive. Instead of just sending a single message, you can create a whole branching conversation with multiple calls to action. It's like a 'choose your own adventure' for your prospects. This is a great way to engage users and guide them towards different outcomes, whether it's signing up for a webinar or downloading a whitepaper. Make sure your LinkedIn Sales Navigator is up to scratch.

Multiple CTAs: Give people options! The more ways they can engage, the better.
Character Limit: You get a bit more leeway here, up to 8,000 characters, but still, be mindful of people's time.
Banner Image: A banner image (300 x 250 pixels) linking back to your firm might also be included in your message.

Follower Ads: Growing Your Crew With Smart LinkedIn Ad Sizes

Want to boost your follower count? Follower Ads are designed to do just that. These ads typically appear in the right-hand column of the LinkedIn feed and encourage users to follow your company page. They're simple, effective, and a great way to build your brand presence. The key is to make your company page look appealing.

Small and Mighty: These ads are usually quite small, so make every pixel count.
Clear Value Proposition: Why should someone follow you? Make it obvious.
Visual Appeal: Use eye-catching visuals that grab attention.

Feature	Specification
Image Size	100x100 pixels
Headline Limit	25 characters
Description Limit	75 characters

Dynamic Ads: Personalisation Power With LinkedIn Ad Sizes

Dynamic ads are where things get a bit clever. They use LinkedIn member's profile data to tailor the ad specifically to them. Think of it as LinkedIn whispering sweet nothings (or, you know, relevant job opportunities) directly into their ear. It's all about making that personal connection, and the right LinkedIn ads dimensions are key to making it work.

Spotlight Ads: Shining Bright With LinkedIn Ad Sizes

Spotlight ads are all about grabbing attention. They're designed to drive traffic straight to your website or a specific landing page. You can even add a background image to really make it pop. Think of them as the digital equivalent of a spotlight shining on your best offer.

Ideal for promoting a specific product or service.
Great for driving sign-ups or registrations.
Make sure your landing page is ready to convert that traffic!

Spotlight ads are fantastic for highlighting a particular offering. Just make sure your ad copy is crystal clear about what you're promoting. No one likes clicking on an ad only to find out it's not what they expected.

Job Ads: Attracting Talent With Precise LinkedIn Ad Sizes

Looking for your next superstar employee? Job ads are the way to go. These ads are designed to attract top talent by showcasing your open positions. The key here is to be specific and highlight what makes your company a great place to work.

Clearly state the job title and responsibilities.
Highlight the benefits of working for your company.
Use compelling visuals to grab attention.

Content Ads: Delivering Value With Tailored LinkedIn Ad Sizes

Content ads are all about providing value to your audience. Share insightful articles, helpful guides, or engaging videos to establish yourself as a thought leader in your industry. It's a softer approach than direct sales, but it can be incredibly effective in building trust and credibility.

Share valuable and relevant content.
Position yourself as an expert in your field.
Build relationships with potential customers.

Here's a quick rundown of some recommended sizes for dynamic ads:

Ad Type	Size (Pixels)	Notes
Small Dynamic Ad	100 x 100	Good for basic branding
Medium Dynamic Ad	200 x 200	Allows for a bit more detail
Large Dynamic Ad	300 x 250	Best for showcasing products/services

Text Ads: Small But Mighty LinkedIn Ad Sizes

So, you think text ads are the underdogs of LinkedIn advertising? Think again! These little guys might not be as flashy as video or carousel ads, but they pack a punch. They're like the espresso shot of the LinkedIn world – small, but surprisingly effective. Plus, they're a great way to get your LinkedIn Business Page seen without breaking the bank.

The Humble Text Ad: Don't Underestimate Its LinkedIn Ad Sizes

Text ads are the original pay-per-click (PPC) ads on LinkedIn, appearing usually on the right-hand side of the desktop screen. They're simple: a small image, a catchy headline, and a brief description. Don't let their simplicity fool you; a well-crafted text ad can drive serious traffic and generate leads. It's all about making every character count. Think of it as haiku for marketers – concise, impactful, and hopefully not terrible.

Here's what you need to keep in mind:

Image size: 100x100 pixels (JPG or PNG format)
Image file size: Under 2MB
Headline: Maximum 25 characters
Description: Maximum 75 characters

Sidebar Savvy: Maximising Small LinkedIn Ad Sizes

Okay, so you're working with limited space. How do you make the most of it? It's all about being strategic. Use high-contrast colours to make your ad pop against LinkedIn's blue and white background. Write headlines that grab attention immediately. And most importantly, make sure your social media marketing copy is crystal clear about what you're offering. No one clicks on an ad they don't understand. Think of your sidebar space as prime real estate – every pixel counts!

Call To Action: Driving Clicks With Compact LinkedIn Ad Sizes

Your call to action (CTA) is the key to turning a casual browser into a potential customer. Make it clear, concise, and compelling. Use action verbs like "Download Now," "Learn More," or "Get Started." And for goodness' sake, make sure your CTA aligns with what you're actually offering on the landing page. No one likes a bait-and-switch. Keep those headlines under 25 characters and descriptions under 75 characters. Here's a handy guide:

Text ads might be small, but they're mighty when used correctly. Focus on clear messaging, eye-catching visuals, and a strong call to action. Don't be afraid to experiment with different ad copy and targeting options to see what works best for your audience. And remember, even the smallest ad can make a big impact if it's done right.

Beyond The Pixels: Optimising Your LinkedIn Ad Sizes

Right, so you've got your pixels sorted, but slapping any old image into those dimensions isn't going to cut it. We need to think beyond just the size. It's about making those ads work for you, not just take up space. Let's get into the nitty-gritty of making your LinkedIn ads shine.

Aspect Ratios: The Secret Sauce To Perfect LinkedIn Ad Sizes

Aspect ratios, eh? Sounds fancy, doesn't it? Basically, it's the relationship between the width and height of your image. Get this wrong, and you'll end up with stretched or squashed images. Nobody wants that. For example, single image ads display best at 1200 x 628 pixels with an aspect ratio of 1.91:1. Getting the aspect ratio right is like finding the perfect pair of shoes – comfortable and stylish.

File Formats: Getting Your LinkedIn Ad Sizes In Order

Okay, so you've nailed the size and aspect ratio. Now, what about the file format? LinkedIn likes JPG, PNG, and GIF. Keep your file sizes reasonable – nobody wants to wait an age for your ad to load. Think about mobile users, too! Here's a quick rundown:

JPG: Good for photos, smaller file size.
PNG: Better for graphics, can handle transparency.
GIF: For simple animations, keep them short and sweet.

Text Limits: Keeping It Snappy For LinkedIn Ad Sizes

Less is often more, especially when it comes to text in your ads. People are scrolling through their feeds at lightning speed, so you've got seconds to grab their attention. Keep your headlines short, punchy, and to the point. Think of it like writing a tweet – every character counts! For single image ads, keep headlines under 70 characters to avoid truncation. And keep introductory text under 150 characters to avoid truncation. You want them to see the whole message, right?

Remember, your ad is competing with a whole load of other content. Make sure your message is clear, concise, and compelling. Don't waffle on – get straight to the point and tell people what you want them to do. A strong call to action can make all the difference.

Common Blunders: Avoiding LinkedIn Ad Sizes Nightmares

Let's be honest, we've all been there. You spend ages crafting the perfect LinkedIn ad, only to upload it and find it looks like it's been through a blender. Dodgy pixels, weird cropping – it's enough to make you weep into your coffee. But fear not! Here's how to avoid those common LinkedIn ad size blunders and keep your campaigns looking slick.

Pixelated Perils: When LinkedIn Ad Sizes Go Wrong

Ever seen an ad that looks like it was designed on a potato? That's the dreaded pixelation problem. This usually happens when you use an image that's too small and LinkedIn stretches it to fit. Always start with high-resolution images. Think of it like this: you can always shrink an image, but you can't magically add pixels that aren't there. For LinkedIn ad specs, always check the latest recommendations – they change more often than the British weather!

Cropped Catastrophes: The Horror Of Bad LinkedIn Ad Sizes

Oh, the agony of carefully positioning your logo, only to find LinkedIn has chopped off half of it. Or worse, it's lopped off the CEO's head! This is usually down to incorrect aspect ratios. Make sure your image fits the required dimensions exactly. Here's a quick checklist:

Double-check the required aspect ratio for the ad type.
Use a tool to crop your image to the correct size before uploading.
Preview your ad on both desktop and mobile to see how it looks.

It's worth spending a few extra minutes getting the cropping right. A badly cropped ad looks unprofessional and can damage your brand's credibility. Think of it as the digital equivalent of turning up to a job interview with your shirt unbuttoned.

The Mobile Maze: Ensuring Your LinkedIn Ad Sizes Are Responsive

Most people are scrolling through LinkedIn on their phones, so if your ad looks great on a desktop but rubbish on mobile, you're missing a trick. Responsiveness is key. Here's how to navigate the mobile maze:

Use flexible layouts that adapt to different screen sizes.
Keep text concise and easy to read on smaller screens.
Test your ads on multiple devices to ensure they look good everywhere.

Ignoring mobile is like opening a shop with no front door – you're making it hard for people to get in. Make sure your LinkedIn advertising is mobile-friendly, and you'll see a big difference in engagement.

Pro Tips From The Pros: Mastering LinkedIn Ad Sizes

A person in a suit delivering a presentation on stage.

A/B Testing: Finding Your Sweet Spot For LinkedIn Ad Sizes

Right, so you've got your ads looking pretty, but are they actually working? That's where A/B testing comes in. Don't just guess what your audience likes; test it! Try different LinkedIn ad specs – different images, headlines, even button colours. See what gets the most clicks, conversions, or whatever your goal is. Think of it like this: you're a scientist, and your ads are your experiments.

Here's a quick rundown of what you could test:

Images: Different visuals can drastically change performance.
Headlines: A catchy headline is half the battle.
Call-to-actions: "Learn More" vs. "Sign Up Now" – which works best?

A/B testing isn't a one-time thing. It's an ongoing process. Keep testing, keep tweaking, and keep improving your ads. The data will tell you what works, and what doesn't. Trust the numbers, not your gut feeling (unless your gut feeling is backed by data, of course!).

Audience Targeting: Matching LinkedIn Ad Sizes To Your Tribe

Okay, so you've got your perfectly sized ad, but are you showing it to the right people? Targeting is key. LinkedIn lets you get super specific with who sees your ads. Think about job titles, industries, company sizes, skills – the works. The more targeted you are, the more likely you are to get relevant clicks and conversions.

Don't just blast your ad out to everyone and hope for the best. That's like shouting into a void. Instead, think about who your ideal customer is and target them specifically.

Here's a few targeting tips:

Job Titles: Target specific roles that align with your product or service.
Industries: Focus on industries where your solution is most relevant.
Company Size: Tailor your message to suit different sized businesses.

Budgeting Brilliance: Making Every LinkedIn Ad Size Count

Right, let's talk money. You don't want to blow your entire marketing budget on ads that aren't performing, do you? Of course not! That's why smart budgeting is essential. Set a daily or lifetime budget that you're comfortable with, and keep a close eye on your ad performance. If something isn't working, pause it and try something else. It's all about optimising your spend to get the best possible return.

Think of your budget like a pizza. You want to make sure every slice is delicious and contributes to the overall experience. Don't waste slices on things nobody wants!

Here's how to make your budget go further:

Start Small: Begin with a smaller budget to test the waters.
Monitor Performance: Keep a close eye on your ad metrics.
Optimise Regularly: Adjust your bids and targeting based on performance.

Future-Proofing Your Funnel: Staying Ahead Of LinkedIn Ad Sizes

Right, so you've nailed the current LinkedIn ad sizes. Congrats! But the digital world moves faster than a toddler after a sugar rush. What's hot today is old news tomorrow. Let's peek into our crystal ball (aka, industry blogs and LinkedIn's own announcements) and see what's coming down the pike so you can keep your campaigns fresh and effective.

LinkedIn's Updates: Keeping An Eye On LinkedIn Ad Sizes

LinkedIn, bless its corporate heart, loves to tweak things. New features, new layouts, and yes, new ad sizes pop up all the time. The best way to stay ahead is to subscribe to LinkedIn's Marketing Solutions blog and follow their official announcements. Think of it as your LinkedIn ad size news feed. Also, keep an eye on LinkedIn ads dimensions as they evolve.

Industry Trends: What's Next For LinkedIn Ad Sizes?

What's trending in the wider digital marketing world often trickles down to LinkedIn. Are video ads becoming even more dominant? Is interactive content taking over? Keep an eye on these trends:

The Rise of Short-Form Video: TikTok and Reels have proven the power of short, punchy videos. Expect LinkedIn to lean further into this.
Augmented Reality (AR) Ads: Imagine trying on a product virtually through a LinkedIn ad. It sounds futuristic, but it's coming.
Personalisation on Steroids: AI is making ad personalisation even more granular. Expect ads that feel eerily tailored to each individual user.

Staying informed about industry trends is like having a cheat sheet for the future of LinkedIn advertising. Don't just stick to LinkedIn-specific news; broaden your horizons to see where the whole digital landscape is heading.

Adapt And Conquer: Evolving With LinkedIn Ad Sizes

So, you've seen the writing on the wall. Now what? Here's how to future-proof your LinkedIn ad strategy:

Be Flexible: Don't get too attached to one particular ad format or size. Be ready to switch things up at a moment's notice.
Test, Test, Test: A/B testing is your best friend. Continuously experiment with different ad sizes and formats to see what resonates with your audience.
Embrace New Technologies: Don't be afraid to try out new ad features and formats as they become available. You might just stumble upon the next big thing.

Basically, stay curious, stay adaptable, and don't be afraid to experiment. The future of LinkedIn ad sizes is unwritten, but with a bit of foresight and a willingness to learn, you'll be ready for anything LinkedIn throws your way.

Keeping up with LinkedIn's ever-changing ad sizes can be a right pain, can't it? One minute your ads look spot on, the next they're all squiffy. Don't let those tricky size updates mess up your brilliant campaigns. We've put together some top tips to help you stay ahead of the game and make sure your ads always look tip-top. Have a gander at our website to learn more and keep your LinkedIn ads looking sharp!

Right, so what have we learned?

So, there you have it. Getting your LinkedIn ad sizes spot on isn't just about making things look pretty; it's about making sure your message actually gets seen and doesn't end up looking like a squashed mess. Think of it like trying to fit a square peg in a round hole – it just won't work, and everyone will notice. We've gone through all the bits and bobs, from those tiny text ads to the big, flashy video ones. It might seem a bit much at first, like trying to assemble flat-pack furniture with only a picture, but honestly, once you get the hang of it, you'll be a pro. Just remember to double-check those dimensions before you hit 'go', otherwise, your brilliant ad might just look a bit… off. And nobody wants that, do they?

Frequently Asked Questions

What are LinkedIn ad sizes?

LinkedIn ad sizes are the specific measurements for pictures and text used in ads on LinkedIn. They make sure your ads look good and work well on the platform.

What types of ads can I run on LinkedIn?

You can run many types of ads on LinkedIn, like single image ads, carousel ads, video ads, message ads, and dynamic ads. Each type has different uses.

Why are LinkedIn ad sizes important?

Using the right ad sizes is super important because it makes your ads clear and attractive. If your ad sizes are wrong, your ads might look blurry or cut off, which can make people ignore them.

What's a good general size for a LinkedIn ad image?

For single image ads, a common size is 1200 x 627 pixels. But remember, sizes can change depending on the ad type and if LinkedIn updates its rules.

Do LinkedIn ad sizes ever change?

Yes, LinkedIn often updates its ad rules. It's a good idea to check their official advertising guide every now and then to make sure your ads are always up to date.

What happens if my ad image is the wrong size?

If your ad image is too big or too small, it might look stretched, squished, or blurry. This can make your ad look unprofessional and not grab attention.

How can I make sure my ad images are the right size?

You can use design tools like Canva or Adobe Photoshop to make sure your images are the correct size. LinkedIn also has guidelines that show you the best sizes for each ad type.

Do LinkedIn ad sizes matter for mobile phones?

Yes, ads need to look good on phones too! LinkedIn automatically tries to make your ads fit different screens, but it's always best to check them on a mobile device before you launch your campaign.