Description
SIANO Vision AltText AI uses advanced AI vision models (GPT-4o, Groq) to automatically generate SEO-optimized alt-text for your WordPress images. Unlike basic OCR plugins that simply read text in images, SIANO Vision AltText AI understands image context, composition, and subject matter to create descriptive, keyword-rich alt-text that improves both search rankings and accessibility compliance.
No feature bloat. No unnecessary extras.
Why SIANO Vision AltText AI is Different
🤖 AI Vision Models, Not OCR
Most alt-text plugins use basic optical character recognition (OCR) or simple templates. SIANO Vision AltText AI uses state-of-the-art vision AI that actually “sees” and understands your images like a human would.
🎯 SEO-Optimized by Design
Our advanced multi-factor prompting system considers:
- Image composition and subject matter
- Filename context and keywords
- Technical image details
- Accessibility best practices
- Character length optimization (115–125 chars target)
🔒 Enterprise-Grade Security
API keys are encrypted at rest using AES-256-CBC encryption, meeting enterprise security standards.
Example Transformations
Before (Manual): image_1234.jpg
After (SIANO Vision AltText AI): Professional woman in blue blazer presenting data analytics dashboard on laptop screen in modern office environment
Before (Basic OCR): Sale 50% Off
After (SIANO Vision AltText AI): Red promotional banner advertising 50% off summer sale with shopping cart icon and bright yellow call-to-action button
Before (Generic): Product photo
After (SIANO Vision AltText AI): Minimalist ceramic coffee mug with matte black finish on white marble countertop with soft natural lighting
Features
- ✅ AI-powered alt-text generation using GPT-4o or Groq
- ✅ Bulk processing — process your entire media library with one click
- ✅ Support for multiple AI providers (OpenAI, Groq)
- ✅ Single-image regeneration directly from Media Library
- ✅ Encrypted API key storage (AES-256-CBC)
- ✅ Real-time processing logs and monitoring
- ✅ Smart filename context detection
- ✅ Media library error overlay for failed images
- ✅ Clean, modern admin dashboard
Want More? Go Pro
SIANO Vision AltText AI Pro is a premium addon that requires an active subscription to unlock:
- 🚀 Priority Processing — Bulk images process 4× faster
- ✏️ Custom Prompt Templates — Tailor the AI prompt to your brand
- 📊 Alt-Text Quality Scoring — Automated 100-point quality assessment
- 🔄 Alt-Text History — Stores up to 10 previous versions with one-click revert
- 📥 CSV Export & Import — Bulk manage alt-text via spreadsheets
- ⚡ Auto-Generate on Upload — Every new image gets alt-text automatically
- 🎯 Selective Bulk Re-Process — Filter by missing, low-quality, or all
Perfect For
- E-commerce Stores — Improve product image SEO and conversions
- Photography Portfolios — Showcase your work with rich, professional descriptions
- News & Magazine Sites — Handle high-volume image publishing efficiently
- Accessibility-Focused Organizations — Meet WCAG 2.1 compliance standards
- Digital Agencies — Automate client website optimization at scale
- Bloggers & Content Creators — Save hours on manual alt-text writing
AI Provider Notice:
This plugin connects to third-party AI services (OpenAI, Groq) to generate alt-text. Your images are sent to these external services for processing. Please review their privacy policies:
Screenshots

The main dashboard page page with basic media information and how many images are invisible to search engines, without ALT text. 
The main dashboard page page with a working bulk ALT process. 
Product image post before processing. 
Product image post after processing with extensive ALT description for SEO. 
Product image post – you can press regenerate for image to get a different ALT text suggestion. 
Plugin settings dashboard. 
Unsure of what was done – access logs tab and see exactly what was processed. 
PRO settings – custom prompt, import/export CSV, adjustable processing pace and more!
Installation
- Upload the
siano-vision-alttext-aifolder to the/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress
- Go to SIANO Vision AltText AI in your admin menu
- Enter your AI provider API key in the Settings tab
- Start generating alt-text for your images
FAQ
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Which AI providers are supported?
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Currently OpenAI (GPT-4o models) and Groq are supported. You’ll need an API key from one of these providers to use the plugin.
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Is bulk processing available?
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Yes! Bulk processing is included FREE for all users. Process your entire media library with one click from the Dashboard tab.
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Can I regenerate alt-text for a single image?
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Yes. Open any image in your Media Library and click the “Regenerate Alt Text” button to get fresh AI-generated alt-text.
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How is this different from other alt-text plugins?
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Most plugins use basic OCR (text recognition) or generic templates. SIANO Vision AltText AI uses advanced vision AI models that actually understand image content, context, and composition — similar to how a human describes images.
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Is my API key secure?
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Yes. All API keys are encrypted at rest using military-grade AES-256-CBC encryption before being stored in your database.
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1.0.4
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- Major Refactor: Renamed text domain to
sianovision-alttext-aiand slug tosiano-vision-alttext-ai. - Security: Implemented strict nonce verification and direct file access checks.
- UX: Added non-blocking Toast Notifications in place of JS alerts.
- Compliance: Moved all Pro features to separate addon to comply with WP Guidelines.
- Improved: Smart rate limiting and optimized processing delays.
- Major Refactor: Renamed text domain to
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1.0.3
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- Security: API keys are now encrypted at rest (AES-256-CBC)
- Improved: Significantly enhanced alt-text prompt for richer, SEO-optimized output
- Improved: Refined prompt instructions to prevent text truncation (max 250 chars)
- Improved: Smart rate limiting infrastructure with increased API token limits
- Improved: Optimized bulk processing delays for server stability
- Improved: Image filename used as additional context for better alt-text
- Added: Single-image regeneration from Media Library
- Added: Extension hooks for Pro addon compatibility
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1.0.0
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- Initial release
- AI-powered alt-text generation
- Support for OpenAI and Groq
- Bulk processing capability
- Real-time logging
Reviews
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Contributors & Developers
“SIANO Vision AltText AI” is open source software. The following people have contributed to this plugin.
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Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
