A minimalistic, **JavaScript-free** web interface for Stable Diffusion, designed for compatibility with **legacy web browsers** like Internet Explorer 4, Netscape 4.x, and even Classilla on Mac OS 9.
Built for long-term access to AI image generation using the AUTOMATIC1111 API — from modern GPUs to vintage clients.
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## 🆕 Summer 2025 Update Highlights
- 🗂 **File structure cleanup**– Generation, prompt saving, and UI now fully separated for better maintainability.
- ⏳ **True loading screen**–`loading.php` now displays a loading message before generation starts.
- 💾 **"Save Prompt" moved to result page** – Save your prompt right after generation from `result.php`.
- 📉 **Improved compression**– Lowered ImageMagick quality to 75 (from 85) for **90–93% file size reduction**.
- ✅ **Default sampler set to `Euler a`**, which works especially well with **Illustrious XL** (the recommended model).
- 🧼 Overall code quality and parameter consistency improved.
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## 🔧 Features
- No JavaScript — 100% HTML 4.01 and PHP
- Ultra-lightweight for slow or vintage clients
- LORA model support via `[name:weight]` syntax
- Prompt saving and loading via `saved-prompts.json`
- Server-side PNG ➜ JPG conversion with ImageMagick
- Compatible with AUTOMATIC1111 Stable Diffusion WebUI
* Resulting file sizes reduced by \~90–93%, ideal for slow connections and legacy hardware
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## 🧭 System Architecture
Below is a flowchart diagram representing the separation of concerns between the legacy client and the backend server during prompt submission and image generation.
This image was generated using `Euler a` sampler and the Illustrious XL model, processed entirely through the `phpsd` legacy frontend. Displayed here in Internet Explorer 5 on Windows 2000 SP2.
