LinkedIn Ad Formats: Choosing the Right Format for B2B Objectives

LinkedIn ad formats are the creative types you can run through Campaign Manager, from single image and video ads in the feed to Message Ads in the inbox and Text Ads in the right-hand column on desktop. Each format suits a different stage of the B2B buying journey, so the choice should follow the campaign objective rather than habit or familiarity. For organisations investing in paid media management for B2B organisations, matching format to objective is one of the simplest ways to make a LinkedIn budget work harder.

LinkedIn groups its advertising formats into a small number of families and most B2B campaigns draw on two or three of them at once. The short version is below, with detail on objectives and specifications in the sections that follow.

• Sponsored Content runs in the feed and includes single image, carousel, video, document, event, article and newsletter, Thought Leader and Connected TV ads.
• Sponsored Messaging delivers Message Ads and Conversation Ads to the LinkedIn inbox.
• Spotlight Ads and Follower Ads personalise each ad with the viewer’s own profile details on desktop.
• Text Ads are short headline and description ads shown in the right-hand column on desktop.
• Lead Gen Forms are not a format in their own right, but they attach to Sponsored Content and Sponsored Messaging to collect leads without sending people away from LinkedIn.

In our experience, much of the wasted spend on B2B LinkedIn accounts comes from choosing a format before the objective. Working from the commercial goal to the objective and only then to the format produces campaigns that are easier to measure and improve.

How Campaign Objectives Decide Your Format Options

Your campaign objective decides which LinkedIn ad formats are available, so it is the first decision to make. LinkedIn’s marketing objectives sit across three tiers of the funnel, which are brand awareness, consideration and conversions and each objective offers its own set of formats and bidding strategies.

Brand awareness has a single objective of the same name, optimised for reach or impressions. Consideration covers website visits, engagement and video views and conversions covers lead generation, website conversions and job applicants. LinkedIn’s table of ad formats for each objective shows how much this narrows the choice. Video views campaigns can only use video ads, Text Ads are not offered for lead generation and Thought Leader Ads are not available for lead generation either.

The lead generation objective has one more option worth knowing about. If you share qualified lead data with LinkedIn through its Conversions API, the lead generation objective can optimise towards qualified leads rather than raw form fills. For B2B advertisers whose sales teams reject many inbound enquiries, that signal can improve lead quality over time.

Sponsored Content Formats in the Feed

Sponsored Content is the most flexible group of LinkedIn ad formats and the usual starting point for B2B campaigns. It appears in the feed on desktop and mobile, works across all three funnel tiers and can carry a Lead Gen Form.

Single image ads are the simplest option and the easiest to test. LinkedIn’s single image ad specifications recommend 1200 x 628 pixels for horizontal, 1200 x 1200 pixels for square and 720 x 900 pixels for vertical images, with vertical images serving on mobile only. Introductory text can run to 3,000 characters, but LinkedIn advises keeping it within 150 characters to avoid truncation, so the opening line has to carry the message on its own.

Carousel ads use a series of swipeable cards, which suits a product walkthrough, a sequence of proof points or a set of short case studies. Our guide to LinkedIn carousel ads covers how to plan the card sequence. Video ads can run from three seconds to 30 minutes, though LinkedIn’s video ad specifications recommend 15 to 30 seconds so the ad qualifies for every placement in the feed and on the LinkedIn Audience Network.

Document ads let people read a PDF, slide deck or report inside the feed. LinkedIn’s document ads can be shared freely to build awareness or gated with a Lead Gen Form and reporting shows how much of each document was viewed and how many people downloaded it. For B2B organisations with research, whitepapers or buyer guides, this format is often the most natural bridge between thought leadership and lead generation.

Thought Leader Ads promote a post written by a named person at your organisation rather than a post from the company Page. LinkedIn’s overview of Thought Leader Ads explains that the author approves each request through Campaign Manager before the post can run as an ad and the format is built for awareness and engagement rather than lead capture. In sectors where buyers want to know who they will be dealing with, a senior specialist’s post often earns more attention than a polished brand advert.

Event ads promote LinkedIn Events before, during and after the event and article and newsletter ads promote long-form content published on LinkedIn. Connected TV ads take LinkedIn audiences onto streaming TV publishers and accept 15 or 30 second videos only. They suit larger brand programmes more than lead generation.

Message Ads and Conversation Ads in the Inbox

Sponsored Messaging delivers ads directly to the LinkedIn inbox and it comes in two formats with different jobs. Message Ads carry a single call to action, which suits one clear offer such as an event invitation or a demo booking. Conversation Ads offer several buttons that each lead to a different follow-up message, so the recipient picks the route that interests them.

The Message Ads specifications allow up to 1,500 characters, but LinkedIn’s Message Ads guidance suggests keeping most messages under 500 characters with a clear introduction and purpose. Both inbox formats come from a named sender and LinkedIn recommends someone relevant and credible to the audience, such as a director.

Conversation Ads take more planning than Message Ads. The Conversation Ads specifications allow up to five buttons per message, one of which is a required Not Interested option and Campaign Manager reports on how many people click each offer. That click data shows which topics an audience cares about most and can shape the messaging in feed campaigns.

LinkedIn introduced this consent choice for inbox ads for EU members in August 2024 and later extended it to the wider EEA and Switzerland, letting members choose between Sponsored Messaging and banner ads above the inbox. For campaigns that reach those markets, feed formats with a Lead Gen Form are usually the more dependable route to volume.

Spotlight, Follower and Text Ads on Desktop

LinkedIn’s personalised formats and Text Ads sit outside the feed on desktop and they are the quickest LinkedIn ad formats to produce. They rarely carry a campaign on their own, but they add frequency against a tightly defined audience.

Spotlight Ads and Follower Ads belong to LinkedIn’s personalised ad family, which pulls each viewer’s photo, company name or job title into the ad automatically. Spotlight Ads send traffic to a product, service or event page, Follower Ads encourage people to follow your company Page and both run on desktop only.

Text Ads are LinkedIn’s simplest format, made up of a 100 x 100 pixel image, a headline of up to 25 characters and a description of up to 75 characters. LinkedIn’s Text Ads overview confirms they appear in the right-hand column on desktop only, can be bought on a cost per click or cost per impression basis and pair well with Sponsored Content. With so little space, the targeting does the qualifying and the copy states one benefit.

LinkedIn ads can be charged per click, per impression or per message send, depending on the objective, optimisation goal and bidding strategy. LinkedIn’s objective-based pricing tables show how each combination is billed, so check this before setting a budget.

Matching LinkedIn Ad Formats to B2B Objectives

The right format for a B2B campaign depends on what the campaign needs to achieve and how far the audience is from a buying decision. The table below maps common B2B goals to the formats that tend to suit them, within the limits of what each LinkedIn objective allows.

Account-based campaigns deserve a note of their own. LinkedIn’s company and job title targeting, covered in our guide to how LinkedIn Ads targeting works, lets you warm up named accounts before your sales team gets in touch. Conversation Ads or gated documents can then follow for the people who engaged, which is often the step that turns awareness spend into pipeline.

Planning Creative for Each Format

Creative has to fit the format it runs in and copy that works as a Message Ad will rarely work unchanged as Sponsored Content. A feed ad competes with posts from people the viewer knows, so it needs a short headline and an image that reflects the reader’s working world. An inbox message has more room, but it needs a clear purpose in its opening lines or it is quickly archived.

Each ad should carry one message and one action. A webinar ad should show the speakers or the subject and a gated report should show a cover that looks like a real document. Preview every ad and landing page on a phone before launch, with readable text, captions on video and good colour contrast for people with visual or hearing impairments.

Testing is easier when the variables are clear. Run two or three versions of each ad from launch, change one element at a time and give each version enough impressions to show a real difference before pausing anything.

Measuring and Refining Format Performance

Each LinkedIn ad format needs its own success measures, so judging every format on click-through rate alone gives a misleading picture. Awareness formats are judged on reach, frequency and video completion, inbox formats on open and click rates and lead formats on cost per qualified lead and the share of leads that become sales opportunities.

Lead Gen Forms change the measurement picture, as people convert without visiting your website. Syncing leads from Campaign Manager to your CRM shows which formats produce opportunities rather than form fills. Our article on using LinkedIn Ads analytics covers the reports worth checking each week and our guide to LinkedIn Lead Gen Forms explains how to structure the form itself.

Every lead collected through LinkedIn is personal data, so UK data protection law applies. The ICO’s guidance on business-to-business marketing confirms that the UK GDPR applies when you process a business contact’s personal data for marketing and that you must tell people how you will use it and have a lawful basis. LinkedIn requires a privacy policy URL on every form and its Lead Gen Form specifications allow up to five disclosure checkboxes where you need to record consent.

Priority Pixels runs LinkedIn Ads management for B2B and public sector clients as a specialist channel, with Insight Tag setup, conversion tracking and LinkedIn to CRM lead sync handled as part of the work. Reporting is tied to pipeline rather than platform engagement, so decisions about which formats to scale rest on commercial results. For a campaign built from scratch, our LinkedIn advertising framework for B2B campaigns sets out how objectives, audiences and formats fit together.