How AI Text-to-Image Works
Compose an atmospheric scene from a text prompt — procedural palette + gradient composition. 0 MB download, ~200 ms.
Try it free →Step-by-step process
- 1
Describe the scene
Type a prompt — colours, mood, subject, lighting. Keywords drive the palette and composition.
- 2
Generate locally
On Lite, the procedural composer builds an atmospheric image instantly with no download. On the Pro tier with a WebGPU GPU, SD-Turbo runs a real diffusion model in your browser (~1 GB, cached after the first run).
- 3
Download or refine
Download the PNG, tweak the prompt, switch tiers, or connect your own hosted SD ONNX URL (Pro) for full control.
Frequently asked questions
Is this Stable Diffusion?
On the Lite tier the generator is a fast procedural composer (instant, 0 MB, fully private). On the Pro tier with a WebGPU GPU, it runs SD-Turbo — a real diffusion model — entirely in your browser, and you can also connect your own hosted SD ONNX endpoint.
What do I need to run the real diffusion model?
A WebGPU-capable browser/GPU and a Pro-tier opt-in. SD-Turbo is ~1 GB, downloaded once and cached. Without a GPU or Pro opt-in, the tool falls back to the instant procedural composer rather than failing.
Is my prompt sent anywhere?
No. Generation happens entirely in your browser on every tier — the prompt and the output never leave your device.
Is it free to use?
Yes — AI Text-to-Image is completely free. No account, no watermark, no credits, and no usage limits.
Do my files or prompts ever leave my device?
No. Everything runs locally in your browser via WebAssembly/WebGPU — there is no server that receives your files, prompts, or results.
Which browser and hardware do I need?
A modern browser. Chrome and Edge get WebGPU acceleration for the fastest results; Firefox and Safari run via WebAssembly. This tool downloads nothing and runs on any device.
Can I use the results commercially?
Yes. You own everything you create — NSS makes no claim to the images, videos, or text you process or export.
Does it work on mobile?
Yes — it runs on phones and tablets too, since there is no model download.
Where can I see a step-by-step guide?
Yes — there is a full walkthrough at /how-it-works/ai-text-to-image.