AI rendering software that turns sketches, photos, floor plans and 3D model screenshots into photorealistic architectural renders.

Stable Diffusion AI
Free online Stable Diffusion image generator with inpainting, upscaling and a prompt helper, no install needed.
What is Stable Diffusion AI?
Stable Diffusion AI is an independent website at stablediffusion.fr that lets you run Stable Diffusion in the browser for free. Type a text prompt and get an image back in seconds from the site's own GPU, with no GPU, installation or sign-up needed for the quick web UI. A free account unlocks the fuller text-to-image screens for Stable Diffusion 1.5 and SDXL 1.0, with control over steps, CFG scale, seed and image size. The site also offers inpainting to repaint part of a picture, upscaling up to 2x, a Magic Prompt generator, prompt galleries, artist style references and guides in many languages. Beyond Stable Diffusion it embeds demos of other open models such as FLUX, Qwen-Image and Wan 2.2 image-to-video, plus chat interfaces. It has run since August 2022 and says it is not affiliated with Stability AI. Every tool is free, with no credits or subscription, though usage is rate limited and the GPU is shared with other visitors.
Use cases
- Generate images from text prompts
- Repaint parts of an image
- Upscale images up to 2x
- Write richer image prompts
- Try open image models online
- Learn Stable Diffusion prompting
Who it's for
Why use Stable Diffusion AI
- Start generating at once in the browser with no account, GPU or installation.
- Free account tools add SDXL 1.0 and finer control over steps, samplers and image size without paying for credits.
- Inpainting, upscaling and a prompt generator sit next to the generator, so you can refine a result in one place.
- Prompt galleries and guides show settings behind real examples, which shortens the learning curve for newcomers.
- Several open models can be tried side by side through the embedded demos.
Stable Diffusion AI features
- Text-to-image with Stable Diffusion 1.5 and SDXL 1.0
- Inpainting from a text prompt
- Upscaling up to 2x
- Magic Prompt generator
- Negative prompt, CFG scale and seed controls
- Square, portrait and landscape formats
- Demos of FLUX, Qwen-Image and Stable Diffusion 3
- Wan 2.2 image-to-video demo
- Prompt galleries and artist style references
- Guides in about 21 languages
How to get started with Stable Diffusion AI
- Open the web UI and describe the image in English, with the subject first and then style and lighting.
- Optionally add a negative prompt listing what to avoid.
- Pick a format, adjust the CFG scale or seed, and press Generate.
- Download the result, or send it to the upscaler or inpainting tool.
- Create a free account if you want SDXL, more steps and bigger sizes.
Stable Diffusion AI limitations
- The no-account web UI is fixed at Stable Diffusion 1.5, 20 steps and 512 px on the short side
- Rate limit per visitor of two images a minute, 42 an hour and 1,000 a day
- The GPU is shared, so the page can pause and ask you to retry during busy periods
- Adult content and violence are refused on every tool
- Independent site, not affiliated with Stability AI
Stable Diffusion AI pricing
Stable Diffusion AI is free to use.
Stable Diffusion AI plans
No account
Free
- Quick web UI with Stable Diffusion 1.5
- Inpainting
- Upscaling
- Prompt generator
Free account
Free
- Text-to-image with SD 1.5 and SDXL 1.0
- Steps, CFG scale, seed and size controls
Plans as listed on the official pricing page on . Prices can change and may vary by country or exclude tax. Check the official pricing page.
Stable Diffusion AI alternatives
The main Stable Diffusion AI alternatives listed on Debuly are Midjourney, Adobe Firefly, NightCafe, Allcraft.ai, Deep Dream Generator and HiDream.ai. The table compares pricing and platforms; order is A–Z.
| Tool | Pricing | Starting price | Platforms |
|---|---|---|---|
| Stable Diffusion AI | Free | — | Web |
| Adobe Firefly | Freemium | $9.99/mo | Web, API |
| Allcraft.ai | Freemium | $14/mo | Web, API |
| Deep Dream Generator | Freemium | $9/mo | Web |
| HiDream.ai | Pricing unknown | — | Web, API, Self-hosted |
| Midjourney | Paid | $10/mo | Web, Discord, iOS, Android |
| NightCafe | Freemium | — | Web |

Adobe Firefly
Adobe's generative AI app for creating and editing images, video, audio and vectors, with Adobe and partner models.
Allcraft.ai
Allcraft.ai bundles more than 60 AI tools for chat, image, video and voice work into one token-based subscription.

Deep Dream Generator
Online AI art platform with 30+ image, video and editing models, an energy-based usage system and a public community gallery.

HiDream.ai
AI image and video generation platform with open-weight image models, creator tools and an enterprise API service.

Midjourney
AI image and video generator that turns text prompts into artwork, sold as monthly or annual subscriptions with no free plan.

NightCafe
AI art generator with many image and video models, free daily credits and an optional PRO subscription.
FreemiumVisit NightCafe (official site)
Stable Diffusion AI FAQ
Is Stable Diffusion AI free?
Yes. The site states that every tool is free, with no credits and no subscription. Public tools need no account, and the full text-to-image screens need a free account.
Do I need an account to generate images?
Not for the quick web UI, inpainting, upscaling or the prompt generator. A free account with an email address unlocks the fuller interfaces with Stable Diffusion 1.5 and SDXL 1.0.
What plans does Stable Diffusion AI have?
There are no paid plans. You can use the tools without an account or with a free account.
How many images can I generate?
The no-account web UI allows two images a minute, 42 an hour and up to 1,000 a day for each visitor, and the shared GPU may ask you to retry during busy times.
Is this the official Stable Diffusion site?
No. Stable Diffusion is developed by Stability AI. This is an independent site online since 2022 and it is not affiliated with Stability AI.
Is Stable Diffusion open source?
The Stable Diffusion model is described as open source and free to run on your own computer. This site is a hosted way to use it without installing anything.
What are alternatives to Stable Diffusion AI?
Alternatives include DreamStudio, Leonardo AI, Playground AI, Midjourney and Adobe Firefly, and you can also install the AUTOMATIC1111 web UI locally.
Sources & verification
Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.
| Source | Type | Accessed |
|---|---|---|
| stablediffusion.fr/ | pricing | |
| stablediffusion.fr/signup | official | |
| stablediffusion.fr/webui | official | |
| stablediffusion.fr/about | official | |
| stablediffusion.fr/3 | official |
Image credits
- Logo: from stablediffusion.fr · fetched · Vendor trademark, used only to identify the product; removed on request
- Cover: none collected yet, so a generated tile is shown.
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