Start with the objective and the audience temperature
Write two lines before you open Campaign Manager: what you want this campaign to achieve, and how well the audience knows you. Cold audiences have never heard of you. Warm audiences have visited your site, watched a video or engaged before. The same format behaves very differently in each.
Know what each format is good at
Check which formats your account offers and read LinkedIn's current specs before you produce anything. These five cover most B2B needs:
- Single image: fastest to make and easiest to test. Use it for one clear offer or one clear idea.
- Carousel: several cards that tell a short story. Use it to explain a process, show three proof points or walk through a case study.
- Video: shows the product or a person explaining one idea. Keep it short and add captions, because many people watch with the sound off.
- Document: a PDF people can flip through in the feed. Use it for guides, checklists and templates that build trust before the form.
- Conversation: a message in the inbox with buttons the reader can choose between. Use it for warm audiences and a specific invitation.
Match the format to the stage
This is the mapping I would start with:
- Cold, awareness: single image or short video. One idea, no form.
- Cold to warm, consideration: carousel or document. They give something useful and take longer to read.
- Warm, conversion: single image with a direct offer, or a conversation ad from a named person.
- Retargeting: any format that continues what they already saw, built on Retargeting setup.
A conversation ad sent to a cold audience feels like an unwanted message. A guide offered to someone who is ready to buy feels like a detour.
Pick two formats, not five
Spreading budget across every format leaves each one with too little data to learn from. Choose one simple format and one that suits your content. For most teams that is a single image plus either a document ad or a short video. Put most of the budget on whichever you can produce well. A mediocre video loses to a good image.
Check what you can actually produce
Be honest about your capacity this month. A video needs a script, filming, editing and captions. A carousel needs a designer for each card. A document needs a guide worth reading. If you can make only one new asset a month, start with a single image and use the time to improve the hook. The hook and visuals chapters cover that: Improve your hooks and Improve your visuals.
Keep the offer consistent across formats
Whatever the format, send people to a landing page that finishes the sentence your ad started. If your carousel promises a checklist, the next click should deliver the checklist. Format only changes how the idea is packaged. The offer and the audience do most of the work, as set out in Audience building and matched audiences.
Common mistakes
- Choosing a format because a competitor uses it.
- Opening a video with a logo animation. The first seconds must hold the viewer.
- Making a carousel with ten cards when four would do.
- Offering a 40-page document to a cold audience.
- Judging formats on click-through rate alone, when cost per qualified lead matters more.
How you know it works
You can state, for each running ad, the objective, the audience temperature and why this format suits both. Cost per qualified lead is similar to or lower than before, and the audience matches the format. Once you have a baseline, compare formats properly with A/B test ad formats systematically. Set up and manage the campaigns in LinkedIn Ads.
