micromax

AI Alt Text Creator is a complete solution for automating image SEO and accessibility on your WordPress site. It uses Artificial Intelligence to analyze your images and generate descriptive, context-aware Alt Text and Titles.
By connecting to OpenRouter, this plugin bypasses expensive monthly subscriptions, giving you direct access to the world’s best AI models (including Google Gemini, GPT-4, and Claude 3.5) at the lowest possible cost.
🚀 Key Features
One-Click Manual Generation: Instantly generate metadata for individual images directly from the Media Library list view. Perfect for new uploads or refining specific images.
Automated Background Processing: Process your entire back catalog automatically using the built-in Cron scheduler. Configure batch sizes and intervals to suit your server’s capacity.
Context-Aware Descriptions: The AI reads the Title and Content of the post/page the image is attached to. This ensures the generated Alt Text is relevant to your specific article, not just a generic description of the visual.
Global Context: Add custom instructions (e.g., “Always mention our brand name ‘Acme Corp'”) that apply to every image generated.
Smart Error Handling:
Retry Failed: Automatically logs failed attempts. You can retry all failed images with one click from the settings page.
JSON Fixer: A specialized tool to scan and fix images where the AI might have accidentally saved raw code instead of text.
Detailed Logging: View the exact generation timestamp, source (Manual vs Cron), and any error messages directly in the “Edit Media” screen.
Cost Control: You bring your own API key. You pay only for exactly what you use, with no markup.
Format Control: Choose exactly which file types to process (JPG, PNG, WEBP, etc.).
🧠 Why OpenRouter?
OpenRouter is an AI aggregator that offers significant benefits for WordPress users:
Cheaper: Models like Google Gemini 1.5 Flash are incredibly affordable (often fractions of a cent per image).
Flexible: Switch models instantly. If a new model is released tomorrow, you can simply paste its ID and use it immediately.
No Middleman: You use your own API key.
💡 Context & Prompts
You can customize exactly how the AI behaves using placeholders in your prompts:
Examples of Global Context:
<pre><code>Inputs:
– Page Topic: [{post_title}]
– Page Content: [{post_content}]
– Image: [attached image]
</code></pre>
Examples of Alt Text Prompt:
<pre><code>Role: Web Accessibility and SEO Expert.
Task: Generate a single, optimized alt text string (MAX 125 characters) for the provided image, situated within the context of inputs.
</code></pre>
Examples of Alt Text Prompt:
<pre><code>Role: SEO Copywriting Specialist.
Task: Generate 1 optimized image title based on the provided topic and attached image.
</code></pre>
<h3>External Services</h3>
This plugin relies on OpenRouter as a third-party service to provide Artificial Intelligence capabilities.
<blockquote>
Service Name: OpenRouter
Service URL: https://openrouter.ai/
Data Sent: Image URLs, Post Titles, and Post Content (context) are 
 sent to the OpenRouter API for processing.
Terms of Service: OpenRouter Terms https://openrouter.ai/terms
Privacy Policy: OpenRouter Privacy Policy 
 https://openrouter.ai/privacy
</blockquote>
Note: You must obtain your own API key from OpenRouter to use this plugin.
<h3>Configuration</h3>
1-API Configuration
OpenRouter API Key: Sign up at OpenRouter.ai and paste your key here.
Model Selection: Choose the model you wish to use from the dynamic dropdown menu (default: google/gemini-2.5-flash-lite).
2-Generation Options
Global Context: Instructions sent with every request. Great for setting the “persona” of the AI.
Supported Image Formats: Define which file extensions the plugin should process.
Enable Alt Text / Title: Toggle which metadata fields you want to generate.
Prompts: Customize the specific instructions for generating Alt Text vs Titles.
Save Generation Info: Enables logging of timestamps and error messages to the database.
3-Bulk Generation (Cron)
Enable Background Processing: Turns on the automatic generator.
Batch Size: How many images to process per run. Keep this low (1-2) to prevent server timeouts.
Interval: How often the job runs (in minutes).

KooKoo AI Alt Text Creator

Automatically generates descriptive Alt Text and Titles for your Media Library images using AI via OpenRouter.

Presswell

benplum

Presswell Alt Text Generator helps teams reduce accessibility backlog by generating descriptive alt text for new and existing images. Connect a provider, choose a model, and run generation workflows directly inside wp-admin.
Features
<ul>
<li>Supports OpenAI, Anthropic Claude, and Google Gemini multimodal models</li>
<li>Generates alt text for individual images in the Media Library and media modal</li>
<li>Processes missing-alt backlogs in batches with a dedicated bulk queue</li>
<li>Handles provider rate limits with automatic cooldown locks</li>
<li>Adds a Media Library column with quick generate/regenerate actions</li>
<li>Provides a customizable prompt seed for output consistency</li>
</ul>
Media Library Tools
Inline actions let you generate or regenerate alt text directly from each image row. When an image has no alt text, the column displays a “Generate Alt Text” link that triggers the AJAX workflow and replaces itself with the result.
Bulk Generator
The Bulk page counts images missing alt text, allows regeneration preferences, and runs batches while surfacing progress, failures, and rate-limit pauses.
<h4>Documentation</h4>
Filters
<ul>
<li><code>pwatg_available_services</code> — Modify the available AI providers</li>
<li><code>pwatg_available_models</code> — Modify the available models for each provider</li>
<li><code>pwatg_provider_registry</code> — Map provider slugs to custom service classes</li>
</ul>
WP-CLI
If WP-CLI is available, you can run single-image generation, bulk generation, and missing-alt counts from the command line:
<ul>
<li><code>wp pwatg generate <attachment-id></code></li>
<li><code>wp pwatg bulk-generate</code></li>
<li><code>wp pwatg count-missing</code></li>
<li><code>wp pwatg network-bulk-generate</code></li>
</ul>
Optional CLI flags:
<ul>
<li><code>wp pwatg generate <attachment-id> --force</code></li>
<li><code>wp pwatg bulk-generate --force</code></li>
<li><code>wp pwatg bulk-generate --limit=<int></code></li>
<li><code>wp pwatg bulk-generate --missing-only</code></li>
<li><code>wp pwatg network-bulk-generate --force</code></li>
<li><code>wp pwatg network-bulk-generate --limit=<int></code></li>
<li><code>wp pwatg network-bulk-generate --missing-only</code></li>
<li><code>wp pwatg network-bulk-generate --sites=<id,id,...></code></li>
</ul>
<h3>Privacy</h3>
This plugin sends image-derived payloads to the AI provider you choose when generating alt text (OpenAI, Anthropic, or Google Gemini). API keys are stored in WordPress options on your site and used only for outbound provider requests initiated by your server.
<h3>External Services</h3>
This plugin connects to external AI services only when you use alt text generation features or test provider connectivity. Only the provider selected in plugin settings is contacted for a given request. This plugin sends the follow data:
<ul>
<li>API key (in Authorization header)</li>
<li>Selected model name</li>
<li>Prompt text (including your prompt seed and filename context)
<ul>
<li>For alt-text generation: image MIME type and image binary content encoded as base64</li>
<li>For Test Connection: a short text prompt (“Reply with: OK”)</li>
</ul>
</li>
</ul>
<h4>OpenAI API</h4>
<ul>
<li>Terms: https://openai.com/policies/terms-of-use</li>
<li>Privacy: https://openai.com/policies/privacy-policy</li>
</ul>
<h4>Anthropic API</h4>
<ul>
<li>Terms: https://www.anthropic.com/legal/commercial-terms</li>
<li>Privacy: https://www.anthropic.com/privacy</li>
</ul>
<h4>Google Gemini API</h4>
<ul>
<li>Terms: https://ai.google.dev/terms</li>
<li>Privacy: https://policies.google.com/privacy</li>
</ul>

Presswell Alt Text Generator

Generate accessible image alt text in WordPress with OpenAI, Anthropic, and Google Gemini.

KooKoo AI Alt Text Creator vs Presswell Alt Text Generator