🏖️ Summer Update: Retro cleanup, QOL, optimized JPEG output
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README.md
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README.md
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# Legacy Stable Diffusion WebUI
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# Legacy Stable Diffusion WebUI — Summer Update ☀️
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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.
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Built for long-term access to AI image generation using the AUTOMATIC1111 API — from modern GPUs to vintage clients.
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A minimalistic, JavaScript-free web interface, front-end and processing server for Stable Diffusion, designed specifically for being accessed by legacy systems and browsers as clients. This interface relies on the API from AUTOMATIC1111's Stable Diffusion WebUI.
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---
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## Features
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- No JavaScript dependencies
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- Lightweight and fast loading
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- Support for LORA models using square bracket syntax
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- Image optimization with automatic PNG to JPG conversion
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- Prompt saving and loading functionality
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- Full configurability of key generation parameters:
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- Image dimensions
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- Sampling steps
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- CFG Scale
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- Choice of sampling methods
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- Negative prompt support (1-19-2025 Update)
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- Optimized default parameters for better quality images by default (1-19-2025 Update)
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## 🆕 Summer 2025 Update Highlights
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## Browser Compatibility
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- 🗂 **File structure cleanup** – Generation, prompt saving, and UI now fully separated for better maintainability.
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- ⏳ **True loading screen** – `loading.php` now displays a loading message before generation starts.
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- 💾 **"Save Prompt" moved to result page** – Save your prompt right after generation from `result.php`.
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- 📉 **Improved compression** – Lowered ImageMagick quality to 75 (from 85) for **90–93% file size reduction**.
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- ✅ **Default sampler set to `Euler a`**, which works especially well with **Illustrious XL** (the recommended model).
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- 🧼 Overall code quality and parameter consistency improved.
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- `index.php`: Tested working on IE4+, Netscape 4.x and above browsers (HTML 4 compliant)
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---
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## Requirements
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## 🔧 Features
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- Linux server with a suitable GPU; running a model in AUTOMATIC1111's Stable Diffusion WebUI https://github.com/AUTOMATIC1111/stable-diffusion-webui with API access (image generation back-end)
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- Externally accessible Linux server running PHP 8+ to run the PHP front-end (Tested on frankenphp running on Debian 12, should also run with traditional PHP setups with apache/nginx, can run on the same server as the back-end)
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- Web server (Apache, nginx, etc.)
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- ImageMagick for image optimization
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- Curl
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- Client machine to access the front-end via web browser
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- No JavaScript — 100% HTML 4.01 and PHP
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- Ultra-lightweight for slow or vintage clients
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- LORA model support via `[name:weight]` syntax
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- Prompt saving and loading via `saved-prompts.json`
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- Server-side PNG ➜ JPG conversion with ImageMagick
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- Compatible with AUTOMATIC1111 Stable Diffusion WebUI
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- Configurable generation settings:
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- Image size
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- CFG scale
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- Steps
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- Sampler method
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- Negative prompt support
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---
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## Installation
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## 🌐 Browser Compatibility
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1. Ensure you have AUTOMATIC1111's Stable Diffusion WebUI running with the `--api` flag
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2. Install PHP and ImageMagick on your system
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3. Copy both `index.php` to your web server directory
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4. Ensure the directory is writable by the web server for saved prompts and generated images
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5. Access through your web browser:
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- Use `index.php` for HTML 4.01+ compatible browsers
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Tested on:
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## Usage
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- ✅ Internet Explorer 4–6 (Windows 95–2000)
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- ✅ Netscape 4.x
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- ✅ Classilla (Mac OS 9)
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- ✅ Firefox ESR 102+ (modern systems)
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1. Enter your prompt and negative prompt if applicable in the text area
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2. Configure generation parameters as needed
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3. Click "Generate Image" to create your image
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4. Save frequently used prompts server-side using the "Save Prompt" feature
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5. Load saved prompts from the dropdown menu
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---
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## LORA Usage
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## 📦 Requirements
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To use LORA models, include them in your prompt using square brackets:
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```[lora-name:weight]```
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- **Back-end:**
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AUTOMATIC1111 Stable Diffusion WebUI running with `--api`
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https://github.com/AUTOMATIC1111/stable-diffusion-webui
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- **Front-end Server:**
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Linux server with:
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- PHP 8+
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- ImageMagick
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- cURL
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- Any web server (Apache, nginx, or FrankenPHP)
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- **Client:**
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Any browser capable of submitting forms and rendering HTML 4.01
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(Yes, it really works on Windows NT 4.0)
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---
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## 🧪 Installation
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1. Start AUTOMATIC1111's WebUI with `--api`
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2. Install PHP and ImageMagick on your web server
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3. Place `index.php`, `loading.php`, `generate.php`, and `result.php` in your web directory
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4. Ensure write permissions for:
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- `saved-prompts.json`
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- Your web server's root directory containing the phpsd files, this is where images will be stored
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5. Access `index.php` from a browser and start generating!
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---
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## 🧭 Usage Guide
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1. Open `index.php`
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2. Type your prompt and negative prompt (optional)
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3. Adjust generation parameters
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4. Submit ➜ loading screen ➜ image result
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5. Save your favorite prompts directly from `result.php`
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---
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## 🧠 LORA Support
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Use the syntax:
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```text
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[lora-name:weight]
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````
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Example:
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```a beautiful landscape by [my-artist-lora:0.8]```
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## Notes
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```text
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a high-detail wizard portrait [wizard-style:0.8]
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```
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- Images are automatically optimized and converted from PNG to JPG for faster loading
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- The interface works without any client-side scripting
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- All processing is done server-side
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- Compatible with browsers from the late 1990s to now
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Weight values typically range from `0.1` to `1.0`
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## Screenshots
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---
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### Running on Windows NT 4.0 With IE 4
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## 📸 Image Processing Notes
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### Running on Debian 12 With Firefox ESR 115
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* Generated PNGs are automatically converted to optimized JPGs
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* ImageMagick runs with:
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```
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-quality 75 -strip -interlace Plane -gaussian-blur 0.05 -sampling-factor 4:2:0
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```
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* Resulting file sizes reduced by \~90–93%, ideal for slow connections and legacy hardware
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---
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## 🧭 System Architecture
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Below is a flowchart diagram representing the separation of concerns between the legacy client and the backend server during prompt submission and image generation.
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---
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## 🖥️ Screenshots
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### Running on Windows 2000 SP2 with IE 5 — Illustrious XL Output (June 22, 2025 Summer Update)
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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.
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### Running on Mac OS 9 + Classilla
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### Running on Mac OS 9 With Classilla
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### Firefox ESR 115 on Debian 12
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## Contributing
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Contributions are welcome! Please feel free to submit a Pull Request or fork.
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---
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## License
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## 🖼️ Legacy Wallpaper Output
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This project is MIT licensed.
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Don’t just generate — **decorate**.
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All generated images are:
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- Optimized for ultra-low size (JPG @ quality 75)
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- CRT-safe resolution options
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- Perfect for Retro PC wallpapers
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Whether you’re browsing from Classilla or setting your ThinkPad T21’s background, `phpsd` delivers.
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## 🤝 Contributing
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Pull requests, forks, and retro tweaks welcome!
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Feel free to adapt the UI for even older setups or customize layouts per browser profile.
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---
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## 📜 License
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MIT License
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---
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## 🧠 Credits
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* Front-end & optimization by markmental
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* Powered by [AUTOMATIC1111’s Stable Diffusion WebUI](https://github.com/AUTOMATIC1111/stable-diffusion-webui)
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---
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## Credits
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Built to work with AUTOMATIC1111's Stable Diffusion WebUI API:
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https://github.com/AUTOMATIC1111/stable-diffusion-webui
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