The best AI prompts for posters and banners, 20 to copy (2026)

A good prompt for posters and social media banners defines purpose, audience, visual style, exact text and format, not just “make something nice”. These prompts are ready to copy into ChatGPT, Gemini or Copilot, from the copy to the final image for Instagram, LinkedIn or Facebook.

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What you’ll take from this

This page collects the prompts I use to create AI creatives and the method to write your own. Specifically, you will find this:

• Prompts to write the copy (headlines, tagline and call to action) and prompts to generate the image, kept separate.
• Prompts for launch, webinar, offer, seasonal, YouTube and LinkedIn banners with text, palette and format.
• The method: the fields I use so a banner respects your brand, with a weak prompt turned into a strong one.
• How to adapt the same prompt to ChatGPT, Gemini, Copilot, Claude and Midjourney.
• What to check before publishing: warped text, brand identity and image rights.

ChatGPT prompts for posters and social media banners

These are the prompts I use to create banners, sorted by task. Each one is written to copy and paste into ChatGPT and works in other tools with small changes. The text in brackets is my example: replace it with your case and keep the rest. Library reviewed in October 2026.

One rule before you start: keep text and image separate. Write the message first with a text model, then take that message to an image generator with clear visual instructions. If you ask for both at once, the copy turns weak or the image drifts.

Prompts to write the copy and the call to action

Give ChatGPT context (product, audience, tone and platform), ask for several options and filter by brand.

Headlines, tagline and call to action for an offer

Act as an advertising copywriter specialized in social media.
Context: I run [a specialty coffee shop] and my audience is [25 to 40 years old].
Goal: announce [a 20% discount this week] on [Instagram].
Tone: [friendly and direct], no jargon.
Give me 5 headlines of at most 6 words, 3 taglines of at most 10 words and 3 calls to action of 2 to 4 words.
Return the result as a table with the columns: headline, tagline, call to action.
Avoid: promises I cannot keep, all caps and repeated exclamation marks.

Short text for a webinar poster

Act as a content designer for [LinkedIn].
I need to announce [a free webinar on AI for marketing teams] on [Thursday the 14th at 6:00 PM] with [speaker name].
Write the exact text that must appear on the poster: a title of at most 8 words, a date and time line, a speaker line and a 3-word call to action.
Tone: [professional and clear].
Return it as 3 numbered variants, with no explanations.
Avoid: jargon, sentences over 10 words and details I did not give you.

Adapt one message to each social network

I have this base message for a banner: "[Now available: our new summer collection]".
Adapt it for three networks: [Instagram], [LinkedIn] and [Facebook].
For each network give me: a headline (at most 7 words), supporting text (at most 15 words) and a call to action.
Change the tone by network: [emotional and visual] on Instagram, [professional] on LinkedIn and [direct with an offer] on Facebook.
Present the result as a table with 3 rows.
Avoid repeating the same sentence on two networks.

Prompts to generate the banner image

For the image, describe style, composition, palette, typography, exact text and format. If you do not name the color, framing or mood, the AI improvises. Start the instruction with the format (“generate a square banner…”) so it understands from the first line.

Minimalist webinar banner for Instagram

Generate a square 1:1 banner for [Instagram], minimalist style.
Background: [blue to violet gradient]. White sans-serif typography with high contrast.
Exact main text: "[Free webinar on Thursday]". Spell it without errors and do not add other text.
Leave free space at the top right for the logo.
Professional, clean tone, few elements, plenty of empty space.
Avoid: warped letters, invented extra text, heavy shadows.

Product launch with a neon gradient

Generate a vertical 9:16 banner for [Instagram Stories] announcing the launch of [white running shoes].
Product in the foreground, centered, with rim light. Neon gradient background [from pink to electric blue].
Exact text: "[Available now]" in bold sans-serif typography. Leave the bottom area free for a call to action.
Modern, energetic style, high contrast.
Avoid: extra text, a distorted product, more than three colors.

Offer poster with a hero number

Generate a square offer poster for [Facebook].
Hero: the number "[20%]" in large 3D typography, centered, with volume and a soft shadow.
Below it, the exact text "[off, this week only]" and a call to action "[See the offer]".
Palette: [teal on a cream background], three colors at most.
Clean composition, room for the logo at the bottom left.
Avoid: more text than specified, busy backgrounds, illegible letters.

Seasonal event image with warm light

Generate a horizontal 16:9 image for [a Christmas campaign] for [an independent bookstore].
Seasonal elements: [stacked books, string lights, a steaming mug]. Soft, warm lighting, palette [dark red, gold and cream].
Exact text: "[Give stories]" at the top left, serif typography.
Short message, no other text. Leave free space on the right for the logo.
Avoid: recognizable characters, copyrighted symbols, warped text.

Prompts to refine and adapt a piece you already generated

Refine legibility and composition

Improve this banner without changing its style or palette.
Make these changes: [more contrast between text and background], [fewer elements in the background], [move the logo space to the left].
Keep the text "[Free webinar on Thursday]" and the [1:1] format exactly.
Make only these changes, one by one, and tell me what you modified in each.

Adapt the same banner to another format

Take this square banner and create a [vertical 9:16 Stories] version with the same style, palette and text.
Rearrange the composition for the new format: text in the top third, product in the center and the bottom area free for the call to action.
Do not change the colors or typography. Do not add new text.

Gemini prompts for posters and social media banners

Gemini generates and edits images in the same conversation and fits well if you already work in Google Workspace: you can prepare the copy in Docs and bring it to the banner. These prompts ask for one change at a time, which is how it responds best.

LinkedIn banner for an online event

Create a horizontal 16:9 banner for [LinkedIn] announcing [an online panel on AI in human resources].
Minimalist, corporate style, [plain navy background with a subtle geometric shape], white sans-serif typography.
Exact text: title "[AI in human resources]" and date "[November 21, 12:00 PM]". No other text.
Room for [two speaker photos] on the right and for the logo at the bottom left.
Avoid: extra text, generic stock icons, too many elements.

YouTube channel header with safe zones

Create a banner for a YouTube channel header in an ultra-wide horizontal format (16:9 ratio with a centered composition).
Channel: "[Easy Cooking with Marta]". Style [flat vector illustration], palette [orange, cream and olive green].
Place the channel name and the tagline "[Recipes in 15 minutes]" in the central area, inside a safe zone, so it does not get cut off on mobile, tablet or TV.
Keep the sides for simple decorative elements (ingredients) with no text.
Avoid: text outside the central area, warped letters, busy backgrounds.

Three-piece carousel with a consistent identity

I will ask you for three square images for an [Instagram] carousel about [three tips to save energy at home].
Use the same style in all three: [flat illustration], palette [petrol blue, yellow and white], same sans-serif typography, big number at the top left.
Piece 1: text "[1. Turn off standby]". Piece 2: text "[2. Adjust the thermostat]". Piece 3: text "[3. Use LED bulbs]".
Generate piece 1 first and wait for my confirmation before continuing with the others.
Avoid: changing style between pieces, extra text, more than three colors.

Draft a campaign copy table in Docs

Act as a creative director. Prepare a table for a Google Docs document with the copy for a [fall sale] campaign for [a clothing store].
Columns: piece, social network, format, headline (at most 6 words), call to action, visual notes.
Include 6 rows: 2 for [Instagram], 2 for [LinkedIn] and 2 for [Facebook].
Tone: [friendly]. Afterwards I will use each row to ask you for the image.

Copilot prompts for posters and social media banners

Microsoft Copilot creates images from the chat and works inside Word, PowerPoint, Outlook and Teams with your files, so it is most useful for the workflow around the banner: the brief, the copy and the client presentation.

Quick banner from the Copilot chat

Create a horizontal 16:9 image for a [LinkedIn] banner about [an open house day at a language academy].
Style [clean vector illustration], palette [blue, white and an orange accent].
Exact text: "[Open house day]" and "[Saturday, November 9]". No other text.
Free area on the right for the logo.
Avoid: warped letters, extra text, busy backgrounds.

Creative brief in Word from your notes

Use the file [campaign-data.docx] as the source and write a one-page creative brief in Word for the banners of [the spring campaign].
Structure: goal, audience, main message, tone, brand palette and typography, formats per social network, mandatory text and what to avoid.
Use only the information in my notes and mark [to complete] anything that is missing.
Format: short headings and lists, one page at most.

Present three banner proposals in PowerPoint

Create a 4-slide PowerPoint presentation to show the client three banner proposals for [the launch of a savings app].
Slide 1: goal and audience. Slides 2 to 4: one proposal per slide with headline, tagline, call to action and description of the visual style.
Tone [professional and clear]. Leave a space on each slide to paste the generated image.
Do not invent figures or company data.

Claude prompts for posters and social media banners

Claude does not generate images, but it is very good at careful drafting and structuring. Use it for the image prompt and for the brief, then paste the result into ChatGPT, Gemini or Copilot.

Turn a vague idea into a complete image prompt

Act as an art director. I will give you a banner idea and I want you to turn it into an image prompt ready to paste into a generator.
Idea: [a banner promoting a personal finance webinar on LinkedIn].
Return the prompt split into these fields: format, style, composition, palette, typography, exact text, space for the logo and what to avoid.
If information is missing, ask me up to 3 questions before writing the prompt.
Write it in [English] and in a single block I can copy.

Brand guide to reuse in every banner

Read the attached document [brand-manual.pdf] and extract what is needed to write banner prompts.
Return a "master prompt" of at most 120 words with: palette (with color codes), typography, visual style, tone of voice, logo position and what must never appear.
Use only what the document says; if something is missing, list it separately.
Format: the master prompt in one block and, below it, the list of what is missing.

More prompts for campaigns, ads and variations

These templates work for full ad campaigns and for generating variations without rewriting the prompt. Change the text, color and format and keep the structure.

Five ad variations to test

Act as a social media advertising strategist.
Product: [an online mobile photography course]. Audience: [beginners aged 25 to 45]. Platform: [Instagram and Facebook].
Create 5 ad variations. Each with a different angle: [saving time], [fast results], [social proof], [urgency], [curiosity].
For each variation give me: a headline (at most 6 words), supporting text, a call to action and a 25-word description of the image that would go with it.
Present the result as a table. Avoid absolute promises like "guaranteed".

E-commerce banner with the product in the foreground

Generate a square 1:1 banner for the launch of [a sage green stainless steel thermos] in [the online store of an outdoor brand].
Product in the foreground, large size, on a [soft sage-to-cream gradient background], with soft lighting and a light shadow.
Exact text: "[Available now]" at the top and "[See the offer]" at the bottom, sans-serif typography.
Free space for the logo at the top right.
Avoid: a distorted product, invented labels, more text than specified.

How I built these prompts for banners and posters

Every prompt on this page follows the same structure. When one fails, almost always one of these fields is missing, so I change the fields, not the wording. This is the list I use, in this order:

Five tips for writing your own banner prompts

• Keep copy and image separate. Message first with a text model, then the image with the text already final.
• Put the text in quotes. A short, exact phrase fails far less than a paragraph.
• Name the brand colors. “Teal on cream” works; “nice colors” does not. If you have codes, use them.
• Ask for one change per message. Refining with concrete instructions is faster than starting over.
• Save a master prompt. With your palette, typography and logo described, ready to adapt to each piece.

From a weak prompt to a strong one

This is the prompt almost all of us write the first time:

Make me a nice banner for my webinar.

It names no network, format, style, colors or text, so the AI improvises everything. Adding the seven fields from the table gives this:

Generate a square 1:1 banner for LinkedIn, minimalist style, blue-to-violet gradient background, white sans-serif typography. Exact text: "Free webinar on Thursday". Free space at the top right for the logo. Avoid warped letters and extra text.

The second prompt is reusable: change the text and color and you have the next piece. If you would rather be handed the options, the banner prompt generator does exactly that, and for tools to compose the final piece, see these AI tools for graphic design.

How the prompt changes in ChatGPT, Gemini, Copilot, Claude and Midjourney

• ChatGPT: understands full sentences and generates and edits images in the same conversation. Write the format in words and ask for one change at a time. This library works best here as is.
• Gemini: also generates and edits in the conversation. Repeat the exact text if you make several edits in a row and use Docs to prepare the copy.
• Copilot: creates images from the chat and works with your Word and PowerPoint files. Use it for the brief and the presentation, and ask for the format in words.
• Claude: does not generate images. Use it to write or improve the prompt and the copy, then paste the result into ChatGPT, Gemini or Copilot.
• Midjourney: prefers short visual phrases separated by commas and takes settings at the end: –ar for aspect ratio and –no for what to avoid. It has more artistic quality but is less reliable with long text.

This is the webinar banner prompt adapted to Midjourney:

minimalist social media banner, blue to violet gradient background, bold white sans-serif text "Free webinar on Thursday", clean layout, empty space top right, high contrast, vector style --ar 1:1 --no extra text, warped letters, clutter

AI limits, image rights and where your judgment decides

AI speeds up the first draft, but it fails in specific ways: text sometimes comes out warped, hands look odd and brand consistency is lost if you do not force it in the prompt. Never publish the first draft without reviewing it.

• Final quality: adjust text, contrast and composition in an editor and check how it reads on mobile.
• Brand consistency: check color, logo and tone before publishing. Visual identity does not maintain itself.
• Image rights: check each tool’s terms for the generated images and for the files you upload.

To fit the prompts into your content calendar, save the best ones in a shared document and reuse them with small variations; using AI in creative work gives you more ideas to scale adaptations.

Frequently asked questions about poster and banner prompts

These are the most common questions about writing prompts for banners and posters, with the direct answer first.

How can I create a banner with ChatGPT?

Define goal, audience and platform, and write a prompt with style, typography, palette and exact text. Generate the image, check legibility and color fidelity, and refine one change at a time. Finally, fix the text in an editor.

What are the best prompts for writing advertising posters?

The ones with four elements: product context, goal, output format and tone. For example, ask for “five short headlines, a tagline and a call to action for Instagram, friendly tone”. To structure them better, an AI course for creatives helps.

What are social media banners?

They are visual creatives with text and image to announce a product, event, offer or brand message. They adapt to each platform’s format: vertical for Stories, square for feed and horizontal for headers.

What are community manager prompts?

They are instructions a community manager writes so AI generates copy, campaign ideas, headlines or images for social networks. A good prompt includes goal, platform, audience and tone, and the final review is always human.

Can I use Claude to create banners?

Claude does not generate images, but it helps you write the prompt: give it your idea and ask it to organize it into format, style, palette, typography, exact text and what to avoid. Then paste it into ChatGPT, Gemini or Copilot.

Can I create banners with Gemini or Copilot?

Yes. Both generate images from the chat, so the same prompts work. Gemini fits well with Google Docs for preparing the copy, and Copilot with Word and PowerPoint for the brief and presentation.

Do I need to upload a photo or logo to generate a banner?

Not always. You can generate a banner from text alone if you describe style and content well, but for your logo or a specific brand image it is better to upload them and leave space in the prompt. Check the terms of use for the files you upload.

How do I create YouTube channel art with an AI prompt?

Ask for a horizontal banner with YouTube header dimensions, give the channel name, palette and style, and require the text to sit in the central safe zone so it is not cut off on mobile or TV. Adjust the text afterwards in an editor.

Can I create banners with AI for free?

Yes, several tools have a free tier with limits on usage, resolution or quantity. Try the free version with your real prompts before paying and check the current plans, because they change often.

Your next step with poster and banner prompts

Pick one prompt from the library, change what is in brackets and run your first test. Then change a single field, such as the style or the palette, and compare. This teaches you what each field controls much faster than reading theory.

If you want to apply generative AI to your creative work with a method, the AI course for creatives at Founderz teaches you to integrate these tools into real projects.