The AI poster generator in Secret Chat AI turns a description into finished artwork for a poster, flyer, or banner. The Poster preset gives the model a useful vertical composition, while the normal image settings let you choose another shape, make several variants, and set resolution. Each result arrives in chat with controls to download, edit, remove its background, or upscale it.
GPT Image, Grok Imagine, Nano Banana, Qwen, Seedream and Venice are trademarks of their respective owners (OpenAI, xAI, Google, Alibaba, ByteDance and Venice AI). Secret Chat AI is an independent product and is not affiliated with, endorsed by, or sponsored by any of them. See our Disclaimers.
Start with the Poster preset
Set Preset to Poster on any generating model. It selects a 2:3 aspect ratio and places a short brief before your description: one strong subject, a bold composition, room for a title, and a print-ready result. Your own description supplies the event, scene, palette, title, and style. The chat shows the words you typed rather than the added brief.
The preset suits event posters, cover-like illustrations, promotional art, and a vertical AI flyer maker result. Describe the visual hierarchy as plainly as you can. “A midnight jazz quartet under one amber streetlight, large title at the top, date at the bottom” is more useful than simply asking for an exciting event poster. If you plan to add the final title elsewhere, ask for clear empty space where that type will go.
Choose the shape for a poster, flyer, or banner
The Poster preset begins at 2:3 because it gives a familiar vertical page. You can change the aspect ratio after choosing the preset when the placement calls for something else. The app offers 1:1, 3:2, 2:3, 16:9, 9:16, and 4:5. A tall story graphic often fits 9:16; a feed image may suit 4:5 or 1:1.
For an AI banner generator, choose the ratio closest to the slot: 16:9 for widescreen or 3:2 for a less extreme landscape. Secret Chat AI does not size artwork to the exact pixel dimensions of a particular social network, ad service, or printer. Export the closest composition, then crop or place it in a layout tool using the final specification.
Put words inside the picture carefully
GPT Image Flare and GPT Image Sunburst are the strongest choices when the words must be rendered inside the artwork. Other models vary, and every model can misspell. Give the exact wording in quotation marks: “Title: ‘NIGHT MARKET’” is clearer than “add a night market title.” Keep the amount of text modest and inspect every letter before publishing.
An AI poster maker treats words as part of the picture. They are pixels, not an editable text box. You cannot select the title later, change its font independently, or move it on a layer. For a text-first flyer with schedules, addresses, prices, or legal copy, draw the image here and set the type in a design tool. That gives you reliable spelling and proper control over spacing.
Edit the composition in chat
Press the Edit pencil under a result and write the next change: “make the title bigger,” “move the subject lower,” or “leave more quiet space across the top.” The picture is re-attached and the model redraws it. This is convenient for broad revisions, though unchanged areas may shift slightly. Recheck the text and small details after each pass.
A short follow-up still works when the model normally takes one prompt. A helper model folds the image conversation into one complete description before sending it to that model. Your message stays short in the chat, while the generated request retains the earlier poster context.
Try several poster designs
Variants let you compare compositions before spending time on edits. GPT Image and Grok Imagine can generate up to 10 at once. Seedream and Qwen can generate up to 4, while Nano Banana returns 1. Several rough 1K ideas are usually more useful at the start than one expensive large image whose basic layout is wrong.
Resolution choices depend on the model. Where available, use 1K for drafts and 2K for a larger result. Nano Banana can offer 4K. Seedream and Qwen work at their own fixed sizes. Resolution alone does not repair bad lettering or a crowded composition, so settle those first.
Upscale before print
When the design is ready, press the magnifier and choose ×2 or ×4. The Venice upscaler returns the same image at a larger size without a creative change. ×4 costs four times ×2, and the provider reduces the factor if the full result would exceed about 16.8 megapixels. The source must be at least 256×256 pixels. The upscaled download is PNG.
More pixels help with print, but they do not make an image suitable for every press or paper. Check the printer's required dimensions, crop, bleed, and color instructions. The app produces the artwork; it does not create a press-ready layout with bleed marks or editable type.
Honest limits of poster design AI
This is a picture generator, not a page-layout application. It does not create editable text layers, exact network sizes, reusable brand templates, or vector artwork. Small text can be wrong, and an edit can move details that were already right. For a visual-led event poster, that tradeoff can be useful. For a dense program or information-led flyer, use the generated picture as one element in a design tool.
What it costs
The poster generator uses credits. Model, resolution, and number of variants affect the charge. Upscaling is a separate step, with ×4 costing four times ×2. The exact charge appears under the answer. See the pricing page for packs and subscriptions.
Privacy, stated honestly
We store nothing on our side: there is no archive of chats or pictures, and generated pictures live in your browser. There is no personal profile, no chat is associated with you, and the request reaches the model provider as a stranger's; your email is used only for account access and payment. Your material is never used for training.
Secret Chat AI removes you from your queries — it does not remove the data from your messages. An uploaded photo goes to the chosen provider verbatim, so leave out identifying material you do not want that provider to process.
Make the artwork in the main AI Image Generator, learn prompted revisions and upscaling in the AI Image Editor, or make a profile picture with the AI Avatar Generator. The generators hub covers files such as presentations, documents, and social posts.