PerfectSemicolon

AltGenAI connects your site to the AltGenAI cloud service to generate descriptive alt text for images. Good alt text improves accessibility and can help SEO.
This plugin requires an active internet connection and a valid API key. Generation happens on external servers; see the FAQ for what is transmitted.
<h4>Features</h4>
<ul>
<li>Generate from the Image block sidebar and Gallery images in the block editor</li>
<li>Generate from the Classic Editor media modal</li>
<li>Button on the attachment edit screen and in the Media Library list view</li>
<li>Optional auto-generation when new images are uploaded</li>
<li>Styles: descriptive, SEO-focused, accessibility-focused, or concise</li>
<li>Many output languages</li>
<li>Optional focus keyphrase hints from popular SEO plugins (Yoast, Rank Math, AIOSEO, SEOPress, Squirrly, SmartCrawl)</li>
<li>Bulk scan and process missing alt text</li>
</ul>
<h3>External services</h3>
This plugin relies on the AltGenAI cloud service to process images and generate alt text.
<ul>
<li>What the service is: A cloud-based AI engine that analyzes image content to provide descriptive metadata (alt text, titles, captions).</li>
<li>What data is sent: When you generate alt text, the plugin sends the image URL (or the image data itself if the site is private), your API key, and your preferred style/language settings to <code>api.altgenai.com</code>.</li>
<li>Terms and Privacy: Use of this service is governed by the <a href="https://altgenai.com/terms" rel="nofollow ugc">AltGenAI Terms of Service</a> and <a href="https://altgenai.com/privacy" rel="nofollow ugc">Privacy Policy</a>.</li>
</ul>

AltGenAI

AI-powered alt text for WordPress images. Works with the block editor, Classic Editor, the Media Library, and bulk tools.

Aditya Dandotia

AltNinja Alt Text Generator automatically adds or updates the “alt” attribute for images.
It first tries to use the nearest heading on the page (such as H1, H2, H3, etc.) to create relevant alt text. If no suitable heading is found, the plugin can generate alt text using Google’s Gemini AI (via Google AI Studio).
You can configure the plugin in the Settings area and review generated alt text in Media > AltNinja Manager.
<h3>External Services</h3>
This plugin connects to Google’s Gemini API to generate alt text when no heading is available.
What data is sent and when: 
– During AI alt generation (manual run, bulk generate, or on upload if enabled), the plugin sends the image file (base64-encoded) and its MIME type to Google’s endpoint, along with a plain-text prompt and your selected language code if set. 
– Endpoint domain: https://generativelanguage.googleapis.com 
– No WordPress user account data or site URLs are intentionally sent, though images themselves may contain personal information depending on content.
You must create your own API key in Google AI Studio and save it in Settings.
Service provider: 
Google AI (Google AI Studio) — https://aistudio.google.com 
Terms of Service — https://ai.google.dev/terms 
Privacy Policy — https://policies.google.com/privacy

AltNinja Alt Text Generator

Automatically generates or updates image alt text using nearby headings or AI.

AltGenAI vs AltNinja Alt Text Generator