Connor Bulmer

AI Auto Alt Text Generator is a lightweight, privacy-conscious plugin that uses OpenAI’s GPT-4o mini vision model to create meaningful, screen-reader-friendly alt text and SEO-friendly titles for your images. Whether you add a single image, bulk-process your library, or just want a one-click fix in the Media Library, the plugin handles it all – no manual effort required.
This solution is far cheaper than many alternatives because it cuts out the middle-person. You’ll just need to bring your own OpenAI API key.
<h3>✨ Key features</h3>
<ul>
<li>Automatic alt text on upload – set-and-forget accessibility.</li>
<li>Optional automatic image titles – improve SEO with descriptive titles.</li>
<li>One-click manual generation – “Generate Alt Text & Title” button in the Media Library.</li>
<li>Bulk update tool – batch-process existing images (five at a time) with a configurable pause between batches.</li>
<li>Prompt fine-tuning – supply site-wide context and optionally include the image file name.</li>
<li>Image size & detail control – choose the resolution and level of visual detail sent.</li>
<li>No extra servers – data flows only between your site and OpenAI; nothing is stored off-site.</li>
<li>Multilingual output – choose English (UK), English (US) or other popular languages. (English US is the default.)</li>
</ul>
<h3>🧭 Where to find the bulk tool</h3>
<ul>
<li>Tools → Bulk Alt Text Update</li>
<li>Media → Bulk Alt Text Update (shortcut that redirects to the Tools page)</li>
<li>Settings → Alt Text Generator includes a button linking straight to the bulk page</li>
</ul>
<h3>🧠 How it works</h3>
<ol>
<li>When an image is uploaded (or manually chosen), the plugin creates a temporary public URL for that image.</li>
<li>It sends the image – plus optional context such as the parent post title, your custom site context and the file name – to OpenAI’s gpt-4o-mini vision model.</li>
<li>GPT-4o returns a concise description.
<ul>
<li>Alt text is stored in WordPress’ native <code>_wp_attachment_image_alt</code> field. </li>
<li>(Optional) The returned title is stored as the attachment post title.</li>
</ul>
</li>
<li>Nothing is cached or stored on OpenAI’s side; only the final strings live in your database.</li>
</ol>
<h3>Settings overview</h3>
<ul>
<li>OpenAI API Key – Required to connect to GPT-4o. </li>
<li>Image Size to Send – Thumbnail, Medium, Large, or Full. </li>
<li>Image Detail Quality – ‘Low’ or ‘High’. </li>
<li>Site Context – Optional free-form prompt guidance (brand voice, niche, etc.). </li>
<li>Send Image File Name – Include file name in the prompt for extra context. </li>
<li>Automatically Generate Title – Add descriptive titles alongside alt text. </li>
<li>Use full context for image titles – When enabled, title generation includes site context and file name (uses more tokens). </li>
<li>Bulk optimiser delay (seconds) – Pause between five-image batches during bulk runs. </li>
<li>Output Language – Default English (US). Choose English (UK) for British spellings or another popular language; outputs (alt text and titles) will be generated in the selected language.</li>
</ul>
<h3>External services</h3>
This plugin connects to the OpenAI API to generate alt text and (optionally) image titles.
<ul>
<li>Endpoint: <code>https://api.openai.com/v1/chat/completions</code> </li>
<li>When called:
<ul>
<li>On image upload (automatic) </li>
<li>Via “Generate Alt Text & Title” button in Media Library (manual) </li>
<li>Via Tools → Bulk Alt Text Update (bulk) </li>
</ul>
</li>
<li>Data sent: image URL, optional file name, optional site context, optional parent post title </li>
<li>Terms: <a href="https://openai.com/policies/terms-of-use" rel="nofollow ugc">https://openai.com/policies/terms-of-use</a> </li>
<li>Privacy: <a href="https://openai.com/policies/privacy-policy" rel="nofollow ugc">https://openai.com/policies/privacy-policy</a></li>
</ul>

AI Auto Alt Text Generator

Automatically generates alt text and image titles for your WordPress media uploads with GPT-4o mini, improving accessibility and SEO.

Adrian D

CM Auto Alt Text revolutionizes WordPress accessibility by automatically generating high-quality alt text for your images using multiple AI providers including OpenAI GPT-4 Vision, Google Cloud Vision, and Cloudmersive. The plugin features intelligent provider selection, cost optimization, and enterprise-grade performance.
<h3>🚀 Key Features</h3>
Multi-Provider AI System 
* 3 AI Providers: OpenAI GPT-4 Vision, Google Cloud Vision, Cloudmersive (Azure & AWS coming soon) 
* Intelligent Fallback: Automatic switching between providers if one fails 
* Cost Optimization: Smart provider selection based on usage and cost 
* Quality Scoring: Advanced algorithm to evaluate alt text quality
Enterprise Performance 
* React Admin Interface: Modern dashboard for provider management 
* Bulk Processing: Process thousands of images with background scheduling 
* Performance Optimized: Enterprise-grade database queries and caching 
* Real-time Statistics: Cost tracking, usage analytics, and performance metrics
WordPress Integration 
* Automatic Generation: Alt text created on image upload 
* Gutenberg Integration: Seamless block editor support 
* Media Library: Generate or regenerate alt text for existing images 
* WooCommerce Support: Enhanced product image descriptions
Accessibility & SEO 
* WCAG 2.1 Compliance: Improves accessibility for screen readers 
* SEO Enhancement: Better image context for search engines 
* Context-Aware: Considers post content, categories, and tags 
* Quality Validation: Ensures meaningful, descriptive alt text
<h3>🎯 How It Works</h3>
<ol>
<li>Upload Images – Alt text is automatically generated using the best available AI provider</li>
<li>Configure Providers – Set up API keys and configure provider priorities in the modern React dashboard</li>
<li>Bulk Process – Update existing images using the bulk processing tools</li>
<li>Monitor Performance – Track costs, usage, and quality metrics in real-time</li>
<li>Optimize Settings – Fine-tune provider selection and quality parameters</li>
</ol>
<h3>🔧 Supported AI Providers</h3>
OpenAI GPT-4 Vision 
* Advanced image understanding with contextual descriptions 
* Supports complex scenes and artistic content 
* Context-aware alt text generation
Google Cloud Vision API 
* Powerful object detection and scene analysis 
* Excellent for product images and photography 
* Fast processing with high accuracy
Cloudmersive Image Recognition 
* Cost-effective solution with good accuracy 
* Free tier: 800 API calls per month 
* Reliable for standard image types
Future Development
The following providers are planned for future releases:
Azure Computer Vision 
* Microsoft’s advanced computer vision capabilities 
* Enterprise-grade security and compliance 
* Status: Planned for future release
AWS Rekognition 
* Amazon’s machine learning image analysis 
* Scalable cloud-based processing 
* Status: Planned for future release
<h3>💡 Use Cases</h3>
Bloggers & Content Creators 
* Automatically describe featured images and graphics 
* Improve SEO with contextual alt text 
* Save hours of manual alt text writing
E-commerce Stores 
* Generate product descriptions automatically 
* Improve accessibility for visually impaired customers 
* Enhance product discoverability
News & Media Sites 
* Process hundreds of images quickly 
* Maintain consistent quality across large image libraries 
* Meet accessibility compliance requirements
Enterprise Websites 
* Scale alt text generation across multiple sites 
* Track costs and usage across departments 
* Maintain quality standards with automated scoring
<h3>External Services</h3>
This plugin integrates with multiple AI services to analyze images and generate alt text. By using this plugin, you consent to sending image data to these external services for processing.
<h3>Service Providers</h3>
Cloudmersive (Default) 
* Provider: PRT Systems LLC 
* API Endpoint: https://api.cloudmersive.com/image/recognize/describe 
* Free Tier: 800 API calls per month 
* Privacy Policy: https://account.cloudmersive.com/privacy-policy 
* Terms of Use: https://account.cloudmersive.com/terms-of-use
OpenAI GPT-4 Vision 
* Provider: OpenAI 
* API Endpoint: https://api.openai.com/v1/chat/completions 
* Privacy Policy: https://openai.com/privacy/ 
* Terms of Use: https://openai.com/terms/
Google Cloud Vision 
* Provider: Google LLC 
* API Endpoint: https://vision.googleapis.com/v1/images:annotate 
* Privacy Policy: https://policies.google.com/privacy 
* Terms of Service: https://cloud.google.com/terms/
<h3>Future Providers</h3>
The following services are planned for future integration:
Azure Computer Vision 
* Provider: Microsoft Corporation 
* Privacy Policy: https://privacy.microsoft.com/privacystatement 
* Status: Future development
AWS Rekognition 
* Provider: Amazon Web Services 
* Privacy Policy: https://aws.amazon.com/privacy/ 
* Status: Future development
<h3>Data Handling</h3>
<ul>
<li>Image Processing: Images are sent to selected AI providers for analysis</li>
<li>No Permanent Storage: Images are not permanently stored by external services</li>
<li>Generated Text: Alt text is stored in your WordPress database</li>
<li>API Keys: Securely stored in WordPress options table</li>
<li>Usage Tracking: Costs and statistics stored locally</li>
</ul>
<h3>Privacy Policy</h3>
This plugin sends image data to external AI services for analysis. Please review each provider’s privacy policy:
<ul>
<li>Cloudmersive: https://account.cloudmersive.com/privacy-policy</li>
<li>OpenAI: https://openai.com/privacy/ </li>
<li>Google: https://policies.google.com/privacy</li>
<li>Microsoft: https://privacy.microsoft.com/privacystatement</li>
<li>Amazon: https://aws.amazon.com/privacy/</li>
</ul>
Generated alt text is stored in your WordPress database. API keys are stored securely using WordPress encryption standards.
<h3>Support</h3>
For support, please visit our <a href="https://upmvc.com/" rel="nofollow ugc">support page</a> or use the WordPress.org support forums.
<h3>Getting Started</h3>
<ol>
<li>Documentation: Complete setup guides available at https://upmvc.com/docs/</li>
<li>Video Tutorials: Step-by-step configuration videos</li>
<li>Community Support: Active WordPress.org support forum</li>
<li>Premium Support: Priority support available for enterprise users</li>
</ol>
<h3>Troubleshooting</h3>
<ul>
<li>API Errors: Check API key configuration and account status</li>
<li>Rate Limits: Use multiple providers for higher volume processing </li>
<li>Quality Issues: Adjust provider settings and quality thresholds</li>
<li>Performance: Enable caching and database optimization features</li>
</ul>
<h3>Technical Requirements</h3>
<ul>
<li>WordPress: 6.0 or higher</li>
<li>PHP: 8.0 or higher </li>
<li>MySQL: 5.6 or higher</li>
<li>Memory: 128MB minimum (256MB recommended for bulk processing)</li>
<li>API Keys: At least one configured AI provider</li>
<li>SSL: HTTPS recommended for secure API communication</li>
</ul>
<h3>Developer Information</h3>
<h3>Hooks and Filters</h3>
The plugin provides extensive hooks for developers:
<ul>
<li><code>cm_alt_text_providers</code> – Filter available providers</li>
<li><code>cm_alt_text_quality_score</code> – Modify quality scoring algorithm </li>
<li><code>cm_alt_text_generated</code> – Action when alt text is generated</li>
<li><code>cm_alt_text_context</code> – Filter image context data</li>
<li><code>cm_alt_text_fallback</code> – Customize fallback behavior</li>
</ul>
<h3>Custom Provider Development</h3>
Developers can create custom AI providers by extending the abstract provider class:
<pre><code>`php
</code></pre>
class Custom_AI_Provider extends CM_Auto_Alt_Text_Abstract_Provider { 
 // Implement required methods 
} 
 `
<h3>REST API Endpoints</h3>
The plugin exposes REST API endpoints for headless WordPress implementations:
<ul>
<li><code>POST /wp-json/cm-auto-alt-text/v1/generate</code> – Generate alt text</li>
<li><code>GET /wp-json/cm-auto-alt-text/v1/providers</code> – List providers</li>
<li><code>GET /wp-json/cm-auto-alt-text/v1/statistics</code> – Usage statistics</li>
</ul>

CM Auto Alt Text

Automatically generate descriptive alt text for images using multiple AI providers with intelligent fallback and cost optimization.

AI Auto Alt Text Generator vs CM Auto Alt Text