About this plugin
Magnet Media Optimizer is an all-in-one WordPress image optimizer that enhances your media library by automatically filling in ALT text, captions, and descriptions — while also converting images to modern formats like WebP for maximum performance.
Created by Plugin Magnet, this plugin merges the best features of “Alt Bot” and “Upload Converter WebP” into a single, powerful image-optimization toolkit.
Improve your website’s SEO, accessibility, and page speed — automatically.
💻 Demo | 🚀 Get The PRO Version | 🛠 Support | 📄 Documentation
✨ Key Features
🔹 Automatic ALT Text Generation
Automatically generate meaningful ALT text using a configurable priority chain of:
– EXIF metadata embedded in the image
– File name (cleaned up automatically)
– Post/attachment title
Supports:
– Bulk generation
– Single generation
– Auto-generation on upload
– Media Library buttons
– Missing ALT finder
🔹 Automatic Captions & Descriptions
Fills in an image’s caption and description whenever they are left empty, using the same source chain as ALT text, for:
– Better SEO
– Improved content clarity
– Stronger accessibility compliance
Existing captions and descriptions are never overwritten.
🔹 WebP Image Conversion
Automatically convert JPEG/PNG images to WebP on upload.
Includes:
– Bulk conversion tool
– Adjustable quality slider
– Option to keep or delete the original file after conversion
– Folder exclusion list
🔹 Missing ALT Text Scanner
A complete admin UI showing:
– Images without ALT text
– Status indicators
– Quick one-click fixes
🔹 Centralized Settings Page
Every behavior above — sources used, auto-generation toggles, WebP quality, original-file handling, excluded folders — is configurable from one Settings screen. No editing options in the database required.
🔹 Performance-Focused
- Lightweight
- No frontend bloat
- Optimized for large libraries
- Compatible with all cache plugins
🔹 Works Everywhere
Fully compatible with:
– Media Library (grid & list)
– Gutenberg
– Elementor
– Divi
– Bricks
– Classic Editor
🤖 AI-Powered Generation (Coming Soon)
A future release will let you connect an OpenAI or Anthropic Claude API key and choose which model generates your ALT text, captions, and descriptions — for richer, context-aware results beyond the current EXIF/filename/title chain. A preview of this option is already visible (disabled) on the plugin’s Settings page.
💎 Pro Features (Planned)
- AVIF conversion support
- Batch scheduler for huge libraries
- Custom rules per folder/category
- Cloud compression