AI posters, banners and covers with text

Models for posters and banners

How to make an ad poster with AI

1. 1

   Describe the poster

   Say what is in the frame, where the product sits and what the text says. Type the headline in quotes, word for word, and attach the product photo as a reference.

2. 2

   Pick a model and a frame

   Seedream 4.5 is selected by default, and for tricky lettering GPT Image is worth a try too. Choose the aspect ratio for the platform where the ad will run.

3. 3

   Run a series

   Ask for one to four variants at a time. The run button shows the token total before you start, and the best variant can be refined later.

Which models handle text in images

For lettering, go with GPT Image or Seedream: both render headlines, slogans and package labels neatly. GPT Image 2 and 2.5 take up to 16 references, so a single poster can combine the product, your logo and a style sample.

Reach for Nano Banana when you already have a base: upload a photo or an earlier version of the poster and ask it to change the background, the color of a badge or the words in the headline. FLUX.2 suits photorealistic scenes built from several references, while Z-Image works from text only and ignores uploaded photos.

Models render a short headline more reliably than a paragraph of small print. Long promo terms or a footnote are easier to add as a separate layer in a graphics editor.

What to put in a poster prompt

• The main subject and where it sits, for example "a lemonade can on the right, on a wet stone".
• The headline in quotes, exactly as it should appear in the image. The shorter the phrase, the cleaner the letters.
• The text hierarchy: what is large, what is smaller and where it goes. For instance, the headline at the top, a subheading below it, a call-to-action button at the bottom.
• A palette of two or three colors: "dark blue background, yellow letters, white badge".
• The style: photorealism, flat illustration, 3D, retro poster or minimalism.
• The format and room for text: "vertical poster, clean background at the top for the headline". Set the same format in the settings too, since they control the image size.

Example prompt for a banner

Ad banner for a coffee shop. On the right, a glass of iced coffee covered in condensation, soft studio light. On the left, a large headline "ICED COFFEE", below it in small type "new summer menu", and at the bottom a yellow badge that says "Try it today". Palette: dark brown and cream, minimalist style, no extra objects.

This prompt gives the model everything it needs: the subject and its place, three levels of text from top to bottom, the colors and the style. The model tries to copy quoted words letter for letter, so catch typos while they are still in the prompt. For a banner like this, pick 16:9 in the settings.

Aspect ratios for ad platforms

Social feeds take square 1:1 and vertical 4:5, stories and other vertical screens take 9:16, and a website banner or a video thumbnail takes horizontal 16:9.

Each model has its own set of ratios. Square is available everywhere, and 9:16 and 16:9 almost everywhere; the exceptions are GPT Image 1.5 and GPT-4o Image, which offer only 1:1, 2:3 and 3:2. Vertical 4:5 comes from Nano Banana and GPT Image 2 and 2.5. An exact size in pixels can be entered on GPT Image 2 and 2.5, Seedream 4.5 and Seedream 5.0 Lite.

If a platform caps the file size, a finished image has a "Compress" button that makes the file lighter without a new generation.

A series of variants and refining the best one

One run gives up to four variants of the same prompt. When you test creatives, change one thing between runs: the headline, the background color or the product angle. That way you can see which change worked.

Open the variant you like and click "Use as a reference for photo": the image goes into the composer references. Then describe the edit, such as replacing the headline with "SALE ALL WEEK" or making the background lighter. A model that edits from photos fits this job, for example Nano Banana or GPT Image.

A finished poster can also be animated: the "To video" button puts the image into the Video section as the first frame.

Logos and brands that are not yours

Do not use other companies' logos, names or brand style in ads without the rights holder's permission. A model can draw a recognizable mark, but that does not give you the right to use it, and the ad platform may reject the creative.

Add your own logo, product and packaging as references: the model then sees what they actually look like and has less to guess.

More for your ads

• Creatives for affiliate marketing
• Marketplace product photos
• Product ad video
• Image to video
• AI image generator
• GPT Image
• Seedream
• Nano Banana
• Pricing