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Create Ads with AI: The Step-by-Step Guide

Learn to create professional ads with AI in 5 simple steps. Tools, prompts, formats: everything you need to launch your first campaigns.

By Jérémie Chiari

July 21, 2026 8 min read

Screen displaying code and a futuristic AI interface

Want to create ads that convert without paying a designer €500 per visual? Artificial intelligence now lets you produce professional ad creatives in minutes, even without design skills. This guide shows you exactly how to generate your first AI ads, which tools to use (free and paid), and how to structure your prompts to get visuals that make people want to click. You'll also discover the formats suited to each platform (Meta Ads, Google Display, TikTok) and mistakes to avoid so your creations comply with ad network policies.

Why Create Ads with AI Instead of Traditional Design Tools?

AI cuts ad production costs by 80% and reduces creation time by 10x compared to traditional design tools.

With Photoshop or Canva, you spend hours hunting for the right stock photo, adjusting layers, testing fonts. With an AI image generator, you describe what you want in one sentence and get 4 options in 30 seconds. A freelancer charges €300–€800 for a series of 5 ad visuals. AI costs you €0–€20 depending on the tool.

Another advantage: iteration speed. You test 10 variations of a concept in 5 minutes (background color change, product angle, facial expression) to find which generates the best click-through rate. Impossible with a designer without blowing your budget. According to a 2024 Kantar Media study, advertisers who test at least 5 different creatives per campaign achieve a cost per acquisition 34% lower than those testing only one or two.

AI doesn't fully replace human work on large-budget strategic campaigns, but it democratizes access to quality visuals for small businesses, content creators, and marketers running quick tests.

Which AI Tools Should You Use to Generate Ad Visuals?

The three most powerful tools for creating AI ads are Midjourney (photorealistic), DALL·E 3 (ease of use), and Stable Diffusion (advanced customization).

Midjourney excels at hyperrealistic visuals: product packaging, lifestyle scenes, portraits. It works via Discord, which feels awkward at first, but the quality justifies the learning curve. Subscription starts at $10/month for 200 generations. Ideal for Meta Ads and Google Display requiring a pro finish.

DALL·E 3, built into ChatGPT Plus ($20/month), suits beginners: you type your request in French, the tool understands context, and generates 4 images. Less creative control than Midjourney, but perfect for quickly testing concepts before refining elsewhere. You can also use it free via Bing Image Creator (15 credits daily).

Stable Diffusion via interfaces like Leonardo.ai or Playground AI offers the best value (150 free credits daily on Leonardo). Steeper learning curve: you need to understand parameters (CFG Scale, steps, samplers), but you gain precision. Recommended if you produce 50+ visuals monthly.

For short video ads (UGC format, Reels, TikTok Ads), tools like Runway ML or Pika Labs transform your AI images into 3–5 second clips with animations. The Skilzy AI Ads program shows you how to chain static images and animation to create a complete video ad, from visual generation to final export at the right dimensions.

How to Structure an Effective Ad Prompt?

A high-performing ad prompt contains 5 elements: main subject, visual context, desired emotion, graphic style, and technical constraints.

Start with the subject: "A smiling 35-year-old woman holding a smartphone" rather than "someone with a phone." Demographic precision helps AI generate a coherent face matching your target.

Add context: "in a modern café, natural light from the window, blurred background." This framing sets the mood (professional, casual, luxe) and avoids cluttered backgrounds that hurt message clarity.

Specify emotion: "confident expression," "knowing glance at camera," "enthusiastic gesture." Ads converting best use human faces with clear emotions (source: Facebook IQ study 2023 on 12,000 campaigns).

Define style: "professional advertising photography, Apple campaign style, soft lighting" or "colorful vector illustration, flat design style." This part drives visual credibility.

End with constraints: "vertical composition 9:16, empty space at top for text, blue and white color palette." You're anticipating headline and CTA addition in your editing software.

Complete example: "Professional advertising photograph of a 30-year-old Asian woman, long hair, confident smile, holding a steaming coffee cup, seated by a window overlooking modern buildings, soft morning light, blurred background, Nespresso campaign style, vertical composition 9:16, empty space at top, warm beige and brown palette, professional 85mm f/1.8 shot."

If you're new to prompt writing, check our article on AI image prompts with 30 concrete working examples.

What Formats and Dimensions Should You Use for Each Ad Platform?

Each ad network enforces specific formats: 1:1 square for Meta feed, 9:16 vertical for stories and Reels, 16:9 horizontal for YouTube, and 1200×628 px for Google Display.

Meta Ads (Facebook and Instagram) accepts multiple formats, but 1080×1080 px square works everywhere (feed, stories with auto-crop). To maximize story space, generate directly at 1080×1920 px (9:16). Max file size: 30 MB for images, 4 GB for videos. Text shouldn't exceed 20% of visual surface or you'll face reduced delivery.

Google Display requires multiple sizes for one campaign: 300×250 px (medium rectangle), 728×90 px (banner), 160×600 px (skyscraper), 1200×628 px (social image). Generate your main visual at high resolution (2400×1256 px) then resize in Canva or Photopea (free Photoshop alternative).

TikTok Ads favors native 9:16 format (1080×1920 px), video duration 9–15 seconds. Ads resembling organic content (no invasive logo, no corporate voiceover) achieve 45% higher completion rate per TikTok for Business.

YouTube Ads (pre-roll): 16:9, minimum 1280×720 px resolution, 15–20 second duration recommended for skippable ads. Place your key message in the first 5 seconds: 76% of users click "Skip" as soon as possible (source: Google Ads Help).

When generating your AI visual, anticipate these constraints by specifying the ratio in your prompt or using the tool's format settings ("--ar 9:16" in Midjourney, ratio selection in Leonardo.ai). This prevents awkward crops that cut off faces or products.

How to Add Text, Logo, and Call-to-Action to an AI-Generated Visual?

Once your AI image is generated, use Canva, Figma, or Photopea to layer text, logo, and action button while respecting visual hierarchy.

AI image generators rarely produce readable text (warped letters, typos). You must add your headline and CTA in a composition tool. Canva remains the most accessible option: import your AI image, add a text block, choose a sans-serif font (Montserrat, Poppins, Inter) for mobile readability.

Hierarchy rule: the eye should follow this path: main visual (product or face) → headline (clear benefit in 5 words max) → CTA ("Try free," "Discover offer"). Place the headline in the safe zone (20% margins on edges) so it doesn't get cut on mobile.

Use strong contrast: white text on dark background or black text on light background. If the AI background is too busy, add a semi-transparent rectangle behind text (60–80% opacity) to guarantee readability.

Logo goes top left or bottom right, moderate size (10% of total surface). An oversized logo reduces organic reach on Meta: the algorithm penalizes overly "ad-like" visuals.

For CTA, favor a button with contrasting color (orange, green, red) and benefit-focused copy: "Save 30%" outperforms "Buy now" (Meta internal A/B test 2024). For video ads, the CTA should appear in the last 3 seconds with light animation (fade, slide) to grab attention.

What Mistakes Should You Avoid So Your AI Ad Gets Approved by Ad Networks?

Three mistakes that get AI ads rejected: distorted faces, unreadable AI-generated text, and false promises in the visual.

Meta and Google moderation algorithms detect visual anomalies (extra fingers, asymmetrical eyes, weird teeth). Always check hands and faces before validating a visual. If something looks off, regenerate or fix in Photoshop with the Healing tool.

Never use text generated directly by AI in the image: it often contains typos or invented characters. Always add your text on top in a composition tool. Meta also rejects visuals with over 20% text: use Meta's Text Overlay tool to verify before launching the campaign.

Avoid exaggerated before/afters (weight loss, financial gains): Meta and Google classify these as "misleading content" and may suspend your ad account. If selling a wellness product, show the product in use rather than unrealistic results.

Watch out for image rights: some generators (Midjourney, DALL·E) prohibit commercial use in free tiers. Check terms of service. With a paid subscription, you typically own rights, but read the ToS to avoid disputes.

Finally, always test your ad on mobile before launching: 94% of Meta traffic comes from mobile (source: Hootsuite Digital Report 2024). A gorgeous desktop visual can become unreadable on a 6-inch screen if elements are too small.

Conclusion

Creating an ad with AI has never been more accessible: you pick a tool matching your budget (free or paid), write a precise prompt with subject, context, emotion, style, and technical constraints, generate the visual at the right format for your platform, then add text and CTA in a composition tool. By avoiding common mistakes (distorted faces, unreadable AI text, exaggerated claims), you produce ad-network-approved creatives ready to convert. The key: test multiple variations quickly to identify what works with your audience—a luxury only AI makes economically viable for tight budgets.

Frequently asked questions

Can you create an ad with AI for free?

Yes, several tools let you generate ad visuals for free. Bing Image Creator (DALL·E 3) offers 15 daily credits without subscription. Leonardo.ai provides 150 free daily generations. Stable Diffusion via Hugging Face is completely free but requires technical skills. For tight budgets, start with these to test concepts, then upgrade to paid (Midjourney at $10/month) once you've validated what works. Check our guide on how to [generate AI images for free](https://skilzy.io/blog/generer-images-ia-gratuitement) to compare the 5 best tools.

How long does it take to create an ad with AI?

5–15 minutes for a complete static visual (AI generation + text/logo addition). Generation itself takes 30 seconds to 2 minutes depending on the tool. You then spend 3–5 minutes in Canva adding headline, CTA, and logo. Creating a series of 5 variations (same concept, different angles) takes 30 minutes total. For a short video ad (10 seconds with animation), plan 20–30 minutes including export. This time drops dramatically with practice: after 10 creatives, you're down to 3–4 minutes per visual.

Can AI create video ads or just images?

AI creates both static images and short video ads. For videos, two approaches: either generate an AI image then animate it with Runway ML or Pika Labs (movement effect, zoom, pan), or use video synthesis tools like Synthesia or HeyGen that create talking avatars. The most effective AI video ads combine multiple AI images edited in sequence with transitions, music, and voiceover (generated via ElevenLabs). UGC (creator content) and video ad formats work especially well with this approach.

What types of products work best for AI-generated ads?

Physical products with distinctive packaging (cosmetics, supplements, tech accessories) and dematerialized services (courses, SaaS, apps) perform very well in AI ads. AI excels at creating lifestyle scenes (person using product in aspirational context) and conceptual visuals (visual metaphors for abstract services). However, high-end luxury products often still need real professional photography to guarantee material fidelity (leather, precious metals). Test with AI first: if the render convinces your audience (measured by CTR), you save on photo shoots.

Do you need to mention the ad was created with AI?

No legal requirement in France or the EU mandates disclosing that an ad visual was AI-generated, as long as content isn't misleading. Meta, Google, and TikTok don't require this mention in current ad guidelines (January 2025). However, if you use an AI-generated face resembling a real person to sell a product, avoid implying it's a real customer testimonial: that's misleading advertising. Transparency becomes mandatory only if regulations evolve (EU AI Act directive under discussion).

How do you test multiple ad versions to find the best performer?

Use native A/B testing on ad platforms. On Meta Ads, create a campaign with 3–5 different creatives (same copy, varied AI visuals) and let the algorithm run for 3–5 days at €10–€20 daily budget. Analyze CTR (click-through rate) and CPA (cost per acquisition): the winning creative usually emerges after 1,000 impressions. Then duplicate the campaign keeping only the top visual and increase budget. Test subtle variations: background color, product angle, facial expression. A 0.5% CTR difference can cut your acquisition cost in half on a €50,000 annual budget.