Onion AI - AI Poster Maker

Onion AI is an AI-powered poster and content creation tool that generates professional visuals and copy from simple text prompts — no design skills required.

What is Onion AI?

Onion AI is a web-based AI design platform that takes a short text description or reference image as input and produces ready-to-use posters, social media visuals, and matching copy as output. It is developed by Onion AI and runs entirely in the browser.

Key Features

• AI Poster Creation — Generate full poster designs and copy instantly from a topic or idea, with 20+ trendy content styles to boost engagement.
• Batch Generation — Create multiple posters at once, up to 10× faster than manual work.
• AI Image Editing — Access 80+ AI editing scenarios including watermark removal, text replacement, translation, upscaling, and colorization.
• Free Template Library — Thousands of poster templates available for free with instant high-res download, no subscription required.
• AI Copy Checker — Built-in tool to detect and remove sensitive or risky words before publishing.
• All-in-One Toolkit — 20+ free creative tools: image compression, format conversion, OCR, cropping, watermarking, logo design, QR code generator, meme maker, online Photoshop, and more.

Who is it for?

• Solo creators — Design eye-catching posters and social posts without hiring a designer.
• Marketing teams — Produce on-brand visuals and copy at scale for campaigns.
• Small business owners — Create promotional materials for flyers, sales, and events in seconds.

What can you do with Onion AI?

• Social media managers — Generate engaging posts for platforms like Instagram and Facebook in minutes.
• Event organizers — Design posters for concerts, sales, and competitions using pre-built templates.
• Freelancers — Quickly produce portfolio showcases, client proposals, and branded content.

How does Onion AI work?

1. Type your topic or idea into the input box.
2. Optionally upload a reference image for style matching.
3. Choose from 20+ content styles or browse the template library.
4. Receive AI-generated posters and copy, then download or further edit in the design workspace.

Pricing

Onion AI operates on a freemium model. Free access includes thousands of templates and a set of free tools; premium features (e.g., batch generation, advanced AI editing) are available via subscription.

FAQ

Is Onion AI free?

Yes, Onion AI offers a free tier with access to thousands of poster templates and 20+ free creative tools. Some advanced features require a paid subscription.

What file formats can I export?

Export options include high-resolution PNG, JPG, and PDF for posters. Specific format availability may vary by template.

Can I use my own images?

Yes, you can upload reference images to guide the AI style and layout, or upload your own photos for editing within the AI image editing module.

Does Onion AI support multiple languages?

Yes, the interface supports 20+ languages including English, Chinese, Japanese, French, Spanish, and more.