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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.

Valerio Monti

This plugin implements the automatic creation of alt text for images uploaded to the media library. The alt text is generated at the time of uploading the image and it is also possible to generate the alt text for images already present in the media library.
To generate the alt text, you can choose to use the artificial intelligence of OpenAI or Azure, or decide if you simply want to copy the title of the article where the image is uploaded or the name of the image.
Clearly, using artificial intelligence will allow for a more accurate and useful alt texts.
<h3>Features</h3>
This plugin allows you to generate alt texts in the following ways: 
– using Openai APIs (GPT-4o, GPT-4o Mini, o1 Mini) 
– using Anthropic Claude API 
– using Azure APIs for computational vision; 
– recovering the title of the image 
– recovering the title of the article in which the image is uploaded
<h4>Getting Started</h4>
After installing the plugin, click on the ‘Auto Alt Text’ menu item.
<h3>Choice of Generation Method</h3>
Select the Generation Method you prefer
<h3>OpenAI’s APIs</h3>
In your OpenAI account, retrieve the following data to enter on the options page: 
– API Key
Choose the model you want to use for generating the alt text. 
Enter a prompt for generating the alt text according to your needs.
<h3>Claude Anthropic’s APIs</h3>
In your Anthropic account, retrieve the following data to enter on the options page: 
– API Key
Choose the model you want to use for generating the alt text. 
Enter a prompt for generating the alt text according to your needs.
<h3>Azure’s APIs</h3>
On your Azure account, create a Computer Vision instance and retrieve the following data to enter on the options page: 
– Computer Vision API Key 
– Computer Vision Endpoint
If you want to generate an alt text in English, save the options without filling in any other fields.
If you want to generate an alt text in a different language, on your Azure account, create a Translator instance and retrieve the following data to enter on the options page: 
– Translator Instance API Key 
– Translator Instance Endpoint 
– Translator Instance Region
After entering this data, save the options.
Select the desired language and save the options again.
<h3>Title of the article</h3>
For this generation method, there are no options to set as the alt text will be generated by copying the title of the article in which the image is uploaded.
In case the article is not uploaded as an attachment of an article, the “Title of the attachment” method will be used as a fallback.
<h3>Title of the attachment</h3>
For this generation method, there are no options to set as the alt text will be generated by copying the title of the image.
<h3>Functioning</h3>
Once the plugin is configured, each time an image is uploaded to the media library, an alt text will be automatically set based on the selected generation method.
For images already in the media library, you can create bulk alt texts. Open the Media Library in the “list” view, select the images for which to generate the alt text, and choose the “Generate alt text” bulk action. (Depending on the number of images chosen and their weight, this may take some time.)
You can also generate the alt text of a single image directly from the media library. Open the Media Library in “grid” mode, choose the image for which to generate the alt text, and click the “Generate alt text” button. In no time the alt text field will be overwritten by the generated description.
Notice: If you choose one of the methods that involves the use of external APIs, the upload times for images in the media library might increase because it requires sending a request to the APIs, waiting for the external server to process, and waiting for a response.
<h3>Logging</h3>
If the generation of the alt text via AI is set, in case of errors, to avoid blocking the editorial work, the image is loaded anyway but without the alt text being compiled.
When a call to the Azure or OpenAI API fails, a record containing the error message is saved in a custom database table. 
In this case, the cause of the error can be seen on the Auto Alt Text -> Error log page.
<h3>External Services</h3>
This plugin uses the following external services alternatively:
<h3>OpenAI</h3>
Selecting the generation method “OpenAI’s APIs” will use the API services of <a href="https://openai.com/" rel="nofollow ugc">OpenAI</a>.
This plugin does not collect any information from your OpenAI account. The data transmitted to OpenAI mainly consists of the image files uploaded to your website and the specified prompt.
For accurate information on privacy and conditions of use, please consult the <a href="https://openai.com/policies/privacy-policy" rel="nofollow ugc">privacy policy</a> and <a href="https://openai.com/" rel="nofollow ugc">terms and conditions</a> directly on the official website. It is also advisable to check the costs and usage statistics of the API service on the OpenAI website.
<h3>Anthropic Claude</h3>
Selecting the generation method “Anthropic’s APIs” will use the API services of <a href="https://console.anthropic.com/" rel="nofollow ugc">Anthropic</a>.
This plugin does not collect any information from your Anthropic Claude account. The data transmitted to Anthropic Claude mainly consists of the image files uploaded to your website and the specified prompt.
For accurate information on privacy and conditions of use, please consult the <a href="https://www.anthropic.com/legal/privacy" rel="nofollow ugc">privacy policy</a>, <a href="https://www.anthropic.com/legal/consumer-terms" rel="nofollow ugc">terms and conditions for consumers</a> and <a href="https://www.anthropic.com/legal/commercial-terms" rel="nofollow ugc">terms and conditions for commercial</a> directly on the official website. It is also advisable to check the costs and usage statistics of the API service on the Anthropic website.
<h3>Azure</h3>
Selecting the “Azure’s APIs” generation method will use the API services of <a href="https://azure.microsoft.com/en-us/" rel="nofollow ugc">Microsoft Azure</a>.
This plugin does not collect any information from your Azure account. The data transmitted to Azure consists mainly of image files uploaded to your website.
For accurate information on privacy and conditions of use, please directly consult the <a href="https://privacy.microsoft.com/en-us/privacystatement" rel="nofollow ugc">privacy policy</a> and <a href="https://azure.microsoft.com/en-us/support/legal/" rel="nofollow ugc">terms and conditions</a> on the official website. It is also advisable to check the costs and usage statistics of the API service on the Microsoft Azure’s website.
<h3>Encryption Constants</h3>
We strongly recommend defining the new plugin-specific constants in your <code>wp-config.php</code>:
<pre><code>define( 'AAT_ENCRYPTION_KEY', 'a_random_string_of_at_least_64_characters' );
define( 'AAT_ENCRYPTION_SALT', 'another_random_string_of_at_least_64_characters' );
</code></pre>
You will find these two define(…) lines already generated for you on the Auto Alt Text » Options page – simply copy & paste them before the <code>/* That's all, stop editing! Happy publishing. */</code> line in your <code>wp-config.php</code>.
If you choose not to add them, the plugin will continue to work normally, but it will fall back to using your WordPress <code>LOGGED_IN_KEY</code> / <code>LOGGED_IN_SALT</code>, which may break if those salts are ever changed.
<h3>Disclaimer</h3>
Auto Alt Text is a plugin that helps users automatically generate Alt Texts of their images using AI services such as OpenAI’s ChatGPT or Microsoft Azure. 
Users need their own API key and must follow the rules set by the AI service they choose.
By using Auto Alt Text, users agree to watch and manage AI-made content and address any issues or misuse.
AI Engine developer and related parties are not responsible for any problems or losses caused by the use of the plugin or AI-generated content.

Auto Alt Text

This plugin allows you to automatically generate an Alt Text for images uploaded into the media library via AI.

CM Auto Alt Text vs Auto Alt Text