AI Image Generator
The AI Image Generator on DiagnoSEO lets you generate images from a text prompt. Everything runs online in your browser, with nothing to install. Instead of a single model, you get several of the best AI models. You switch between them in one click.
That lets you compare results on the same input and keep the best one. You pay only for what you generate, in clear credits. The cost is shown before you run anything.
The tool is part of DiagnoSEO's AI toolkit. It is built on an established, trusted SEO domain.
Models you can use
Compare these models on the same input.
| Model | Best for |
|---|---|
| Seedream 5.0 Lite | a lighter Seedream with built-in reasoning |
| Seedream 4.5 | cinematic, film-like images with strong consistency |
| Nano Banana | fast, photoreal results for everyday social and marketing visuals |
| Kling O1 Image | Kling’s dedicated image model |
| GPT Image | OpenAI image generation that follows instructions closely |
| GPT Image 2 | OpenAI’s newer image model with sharp, clean output |
| Nano Banana 2 | the latest Nano Banana with improved quality |
| Nano Banana Pro | higher-fidelity Google generation with strong fine detail |
| Z-Image | a super-fast, very cheap model for high volume |
| Reve | a creative image model for fresh, distinctive looks |
| Flux 2 Pro | high-quality FLUX generation with reference support |
| Wan 2.7 | a recent open Wan image model |
| Ideogram v3 | the best pick for readable text and logos |
| Qwen-Image | a strong, low-cost workhorse with good text rendering |
| Imagen 4 | Google Imagen 4 with fine detail and strong typography |
| Flux 2 Max | the highest-fidelity model in the FLUX 2 family |
| Flux 2 Flex | a FLUX 2 specialist for clean typography and layouts |
| Flux Kontext Max | premium text-based editing with excellent typography |
| Flux Kontext Pro | text-based image editing with consistent results |
What you can do
- Marketing and social-media visuals
- Product shots, mockups and packaging
- Blog headers and video thumbnails
- Ads, banners and promo creatives
- Posters and graphics that need readable text
- Illustrations, concept art and moodboards
- E-commerce and catalog imagery
- Quick drafts and A/B variations before a shoot
- Avatars and profile pictures
- Backgrounds and textures for design
Common tasks
- Ads, banners and promo creatives
- Posters and graphics that need readable text
- Illustrations, concept art and moodboards
- E-commerce and catalog imagery
- Quick drafts and A/B variations before a shoot
- Avatars and profile pictures
- Backgrounds and textures for design
- Marketing and social-media visuals
Who it is for
- Marketers and content teams
- E-commerce and product listings
- Agencies and freelancers doing client work
- Social-media creators and influencers
- Developers prototyping features
- Designers exploring concepts quickly
How to use it
- Choose a model that fits the task.
- Set your prompt, any input and the options.
- Click generate and wait a few moments.
- Download the result, or run another model.
Tips for better results
- Be specific: name the subject, setting, lighting, lens or art style, and colours.
- State the aspect ratio you need (square, portrait, wide).
- Put exact words in quotes when you need text in the image.
- Run the same prompt on another model to compare results.
- Use a reference image where the model supports it for consistency.
- Iterate in small steps instead of rewriting the whole prompt.
- Add negative cues for things you want to avoid.
- Generate a few variations and pick the strongest.
Choosing the right model
There is no single best model. Different models win at different tasks. Premium models give the highest quality. They can cost more.
Fast and open models are cheap. They are great for iterating and high volume. A simple approach works well. Test on a cheaper model, then run the final on the best one.
Outputs and formats
Results are standard image or video files. You can download and use them right away. They fit designs, product listings, ads and posts.
Image models output high-resolution files. Video models produce short clips for social and editing. You can generate many variations and download each one. It is easy to pick the best.
Why DiagnoSEO
You get many models in one place. You switch between them in one click. There are no separate accounts and nothing to install.
You pay per use in credits and see the cost up front. There are no hidden fees and no mandatory subscription.
Pricing
Billing is in credits. The cost of each generation is shown before you run it. It depends on the model and the options. For video, it also depends on length and resolution.
Getting started
Pick a model below. Write a clear prompt or upload your input. Set the options and click generate. Compare a couple of models and download the best version.
The best results come with practice. Try different prompts and models until you find your approach. Save the settings that work well so you can repeat results faster.
Prompt examples
Not sure where to start? Try the prompts below and adapt them to your subject.
- "a minimalist product photo of a ceramic mug on a marble table, soft daylight"
- "a watercolor illustration of a mountain village at sunrise"
- "a bold poster with a clean sans-serif headline"
- "a cozy isometric (angled view) 3D bedroom in pastel colours"
- "a realistic studio headshot, neutral background"
- "a top-down flat-lay (overhead shot) of autumn ingredients, warm tones"
A strong prompt names the subject, the setting, the lighting or style, and the format. Keep one idea per generation. Refine in small steps instead of rewriting everything.
This is faster and cheaper while you experiment. It also gives you more control. Save the prompts that work. Keep a couple of variations of each result.
It depends on the task. Compare a few models and keep the best result.
Usually yes. Licensing depends on the specific model. Check each model's terms.
You can see how the tool works. Generating uses credits.
No. Everything runs in your browser, on desktop and mobile.
Yes, in one click. The form updates in place.
Yes. It runs in any modern browser on phone and desktop. There is nothing to install.
Yes. Every finished result can be downloaded right away.
Where the tool accepts input, yes. Upload a file or paste a public URL.
You can try again or pick another model. You only pay for completed generations.