smartaltfixer

Smart Alt Fixer helps WordPress site owners improve image accessibility and SEO by ensuring that images have meaningful and descriptive alternative text (alt attributes).
The plugin scans the Media Library for images missing alt text and provides automatic generation tools to assist site administrators.
Smart Alt Fixer includes a fully functional local alt-text fallback that works without any external services. 
Connecting to an optional external image analysis service can enhance the generated descriptions, but is not required for the plugin to function.
Missing alt text can negatively impact screen reader accessibility and image search visibility. This plugin helps reduce manual effort while supporting accessibility best practices and SEO guidelines.
Key features include:
<ul>
<li>Scan the Media Library for images without alt text</li>
<li>Generate alt attributes using a local fallback mechanism</li>
<li>Optional enhanced descriptions via external image analysis</li>
<li>WooCommerce product image support</li>
<li>Bulk processing with background execution</li>
<li>Multilingual output based on site language</li>
</ul>
<h3>External Services</h3>
Smart Alt Fixer can optionally connect to an external service to generate enhanced image descriptions.
Image analysis is only performed when the site administrator manually initiates a scan or generation action.
Service name: Smart Alt Fixer API 
Service URL: https://smartaltfixer.com 
Purpose: Optional image analysis and alt text enhancement 
Data sent: Public image URLs only 
Personal data: No personal or identifiable user data is transmitted or stored
Privacy Policy: https://smartaltfixer.com/privacy 
Terms of Service: https://smartaltfixer.com/terms

Smart Alt Fixer – Image Alt Text & SEO

Automatically generate descriptive alt text for images to improve accessibility and image SEO.

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.

Smart Alt Fixer – Image Alt Text & SEO vs Presswell Alt Text Generator