AI Generate Background
Generate a custom backdrop from a text prompt and composite it behind your subject. Procedural palette + scene wrapper, 0 MB download.
| Mode | Speed | Quality | Best for |
|---|---|---|---|
| NSS procedural | Instant · 0 MB | Atmospheric prompt-driven backdrops | On-brand backgrounds behind a subject |
| Stock photo hunt | Minutes of searching | Generic, licensing risk | When you need a literal photo |
Quick start
See all 10 presets
Want this capability inside the main editor with layers, history, and the full AI panel?
How it works
- 1
Add your text
Drop or select the text you want to process — it stays on your device.
- 2
Run the model in-browser
AI Generate Background runs instantly with no download — the work happens locally in a worker.
- 3
Download the image
Preview the result and download the image. Re-run with different settings anytime.
Common use cases
Why it’s different
100% Private
Every model runs in your browser. Your files never leave your device — nothing is uploaded to a server.
True Alpha Channel
Exports preserve a real straight-alpha transparency channel (PNG / WebP / AVIF), not a baked-on background.
Free Forever
No account, no watermark, no credits. Open the tool and use it.
Works Offline
After the model downloads once it is cached, so the tool keeps working with no connection.
FAQ
Does it replace my subject?
No — it generates a backdrop you composite behind an existing cutout, in-editor or via the background tool.
Is it private?
Yes, the backdrop is composed in your browser; nothing uploads.
Is it free to use?
Yes — AI Generate Background 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-generate-background.
Ready to try AI Generate Background?
Free, private, no signup — runs right in your browser.