
Image generation
image-extender
Extend images outwards with AI, plus 2D game asset generation
★ 1.1k
May 2026
MIT
Image generation
What it does
Paints in what lies beyond the frame so an image can be widened or re-proportioned, with blending that hides the join, and adds pipelines for producing 2D game art - parallax backgrounds, tiles, sprites and props - from the same interface. It runs in the browser but needs your own OpenRouter API key, which stays local; generation costs are yours, so start small. What gets added is invented, so keep it away from journalistic or evidentiary images.
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals





Before you start
- Setup difficultySome setup needed
- Command lineNot required
- API keyRequired
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
image-extender FAQ
- Is image-extender free?
- image-extender itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.
- Do I need to install anything or write code to use image-extender?
- You install it like a normal desktop app. No command line involved.
- Does image-extender work on a phone?
- No. It needs a computer.
- Can I use image-extender commercially?
- The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.
How it compares
The conditions that decide whether you can actually use it, side by side.
| Tool | Command line | API key | Sends data out | Phone | Commercial use |
|---|---|---|---|---|---|
| image-extender (this page) | Not needed | Required | Yes | No | Yes |
| diffusers-image-outpaint | Not needed | Not needed | Yes | No | With conditions |
| diffuse-the-rest | Not needed | Not needed | Yes | Yes | With conditions |
| flux-fill-outpaint | Not needed | Not needed | Yes | Yes | With conditions |
"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.