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Use Case · Facebook

How to Create Facebook Ads with AI

Design Facebook ad creative that converts — AI-generated headlines, on-brand visuals, and Meta-compliant dimensions, fast.

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Made in Switzerland · 3-day free trial
Dario Kunz · Co-Founder & Tech Lead, publy.ch
Updated May 12, 2026

What are Facebook Ads?

Facebook ads are paid placements that run across Meta's network — Facebook, Instagram, Messenger, and the Audience Network. The creative consists of a headline, primary text, a visual (image or video), an optional description, and a call-to-action button (Shop Now, Learn More, Sign Up, etc.). Ads can appear in the feed, in Stories, in Reels, in the Marketplace, and in the search results. For US small businesses, Facebook ads are still the most cost-effective paid acquisition channel for direct-to-consumer products, local services, lead generation, and SaaS demos — when the creative is right.

The single biggest variable in Facebook ad performance is creative quality. Meta's algorithm is now powerful enough to find the right audience automatically, which means CPMs, CTRs, and CPCs are almost entirely determined by how the creative performs in the first 24 hours. A high-CTR creative gets cheap reach; a low-CTR creative gets buried, no matter how much you bid. That makes producing fresh, on-brand creative every week the highest-leverage activity in paid social. Manual design at that cadence is impossible for a solo founder — and that is exactly where AI generation closes the gap.

How to create Facebook Ads with publy.ch

With publy.ch you go from blank canvas to ad-ready creative in five steps:

  1. Choose the placement — feed, Stories, Reels, or all three. publy.ch generates each at the correct Meta-spec dimensions.
  2. Describe the offer — one sentence on what you're promoting. The AI writes 3 headline variants, 3 primary text variants, and CTA recommendations.
  3. Apply the brand kit — every variant lands in your colors, fonts, and logo so the ads look like part of your brand.
  4. Generate A/B variants — publy.ch produces 2 creative variants per placement so you can split-test from day one.
  5. Export Meta-ready files — PNG or MP4 sized for Facebook's exact specs. Upload to Meta Ads Manager, no resizing needed.

The result: a campaign-ready creative set, fully branded, in under 10 minutes.

Best Practices for Facebook Ads

  1. Stop the scroll in the first frame. A strong visual hook — face, color contrast, motion — is more important than any other ad element.
  2. Less than 20% text on the image. Meta no longer auto-rejects, but they still suppress reach for text-heavy creative.
  3. Test 3–5 creative variants per ad set. Let Meta's algorithm find the winner.
  4. Refresh creative every 2 weeks. Creative fatigue is real — CTR drops measurably after 14 days even on a winning ad.
  5. Match landing page to creative. If the ad says "20% off," the landing page must lead with "20% off." Mismatch kills conversion.
  6. Use UGC-style creative for B2C. Phone-shot, casual creative outperforms polished studio shots for direct-response in many B2C niches.
  7. Mobile-first design. 98% of Facebook ad impressions are on mobile. Test every creative at 5-inch screen size.
  8. Square or vertical only. Landscape creative wastes feed real estate on mobile.

Formats and Dimensions

  • Feed image: 1080 × 1080 px (1:1) or 1080 × 1350 px (4:5)
  • Feed video: 1080 × 1080 px or 1080 × 1350 px, MP4 or MOV
  • Stories / Reels: 1080 × 1920 px (9:16)
  • Carousel ad: 1080 × 1080 px per card, 2–10 cards
  • Headline: 40 characters max for full visibility
  • Primary text: 125 characters max before truncation
  • File size: images up to 30 MB; video up to 4 GB

Common Mistakes to Avoid

  • Generic stock photos. They look like ads, which means they get scrolled past. Use real product shots or branded illustration.
  • Heavy text overlays. A wall of text on a feed image kills CTR. Move detail to the primary text.
  • Single creative for all placements. A feed image used in Stories gets cropped badly. Build each placement at its native size.
  • No clear CTA button. "Learn More" is the default but rarely the right choice. Match the button to the offer (Shop Now, Sign Up, Get Quote).
  • Running ads to a cold landing page. Cold traffic needs trust signals — reviews, guarantees, and a clear value prop above the fold.

Create Facebook Ads with AI — Try publy.ch Free for 3 Days

With publy.ch you generate a full set of Meta-ready ad creative in minutes — every placement, every variant, every dimension correct. Start your 3-day free trial at publy.ch.