AI Poster Generator
Commercial use OK
380+ models
No watermark
No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Generate print-ready posters. Aspect ratios are locked to real print formats so output goes straight to a print shop without recropping. For 300-DPI quality at 24×36 inch, use FLUX 1.1 Pro Ultra then 4× upscale via /image/upscaler/.
Ready to print?
Send the output through our 4× upscaler for 8000px on the long edge — sharp at 24×36 inch, 300 DPI.
Use cases
Concert + tour posters
Bold graphics, band-poster energy. 2:3 for standard 18x24 venue prints.
Indie film + short posters
Cinematic framing, credit block, festival-submission-ready. 2:3 or 3:4.
Motivational wall art
Office, gym, classroom. Aspirational imagery with space for a quote. 4:5 gallery.
Corporate + conference
Roll-up banners, expo booths, town-hall announcements. A-series or 2:3.
Festival + event
Saturated colors, energetic layout. 2:3 for street posters, 1:1 for social.
Gallery + art prints
Minimalist or vintage styles. 4:5 for 16x20 Etsy prints, A-series for international.
Free.ai Poster vs Canva / Adobe Express
| Feature | Free.ai | Canva | Adobe Express |
|---|---|---|---|
| Starting price | $0 (daily pool) | $12.99/mo Pro | $9.99/mo |
| Generative (vs template) | Yes | Template-based | Template-based |
| Print-format locked | 2:3 / 3:4 / A / 4:5 | Custom sizing | Custom sizing |
| Render quality | FLUX Ultra + 4× upscaler = print-300DPI | Template export | Template export |
| Commercial rights | Yes | Active subscription | Active subscription |
Advanced options
Result
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Create eye-catching posters with AI for free.
How to Use AI Poster Generator
1
Enter your input
Type text, upload a file, or describe what you want. No account needed.
2
Click generate
Our AI processes your request in seconds using the best open-source models.
3
Download & share
Download, copy, or share your result. Free for personal and commercial use.
Use this tool via API
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/image/generate/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"prompt": "A sunset over mountains", "model": "sdxl"}'AI Poster Generator — FAQ
Generate print-ready posters from a text prompt. Pick an aspect ratio locked to real print formats (2:3 for 11x14 / 18x24, 3:4, 1:sqrt(2) for A3/A4, 4:5 for 16x20), a style (concert / movie / motivational / corporate / minimalist / vintage / festival), and we front-load print-friendly cues into the prompt.
Yes — we target print-friendly output: FLUX 1.1 Pro Ultra renders at up to 2048x2048, which after 4x upscaling gives you 8192 px on the long edge — enough for sharp 300-DPI print at 24x36 inch. Use Standard / Schnell for drafts, upgrade to FLUX Ultra when you are ready to print.
2:3 for US standard poster sizes (11x14, 18x24, 24x36). 3:4 for A-series adjacent (18x24). 1:sqrt(2) (approximated as 1:1.414) for A3 / A4 sizes (widely used internationally). 4:5 for gallery-style 16x20 prints.
Yes, but text-in-image quality depends on the model. Ideogram v3 (if you switch to it) renders text cleanly. FLUX / Seedream sometimes garble long strings — for guaranteed text, generate the background with AI Poster Generator and add text in Canva, Figma, or a PDF editor afterward.
Concert (bold graphics, band-poster energy), Movie (cinematic framing, premium layout), Motivational (aspirational imagery + space for text), Corporate (clean branded), Minimalist (negative space heavy), Vintage (retro aesthetic), Festival (saturated, energetic).
For text-to-image on AI Poster Generator, no — you describe the scene, the AI imagines the character. If you need your own character on a poster, generate the character on /image/generate/ or /image/anime/, save it, then composite as a layer in Figma or add via our /image/edit/ tool.
Yes — outputs are yours for commercial printing, gallery sales, event promotion, venue displays. No watermark. Trademark-protected references (real band names, movie franchises) are your responsibility — the AI does not verify rights.
Unlimited — you own the file, not a license. Print 1 or 10,000, commercial or personal, with or without modification.
Print-industry standards. A poster rendered at 16:9 gets letterboxed or cropped when printed at 18x24 (which is 3:4). By locking to print-friendly ratios, you can send the output straight to a print shop without recropping.
Canva ($12.99/mo) and Adobe Express ($9.99/mo) are template editors — you pick a template, swap text and photos, export. Free.ai is generative: no templates, no required layout, any scene you can describe. Combine: generate a poster background here, polish typography in Canva.
Native output varies by model (1024x1024 for SDXL, 2048x2048 for FLUX Ultra). For a 300-DPI print at 18x24 inch you want 5400x7200 pixels — run our /image/upscaler/ (4x) on the generated poster to get there. Standard (SDXL) + upscaler = 4096x4096 at 18x24 inch renders at ~227 DPI (still sharp for viewing distance).
Yes — POST to /v1/image/generate/ with {"prompt": "...", "aspect_ratio": "2:3", "tool": "image-poster", "model": "premium/flux-pro/v1.1-ultra"}. Full curl recipe at /api/.
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