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.

Alt Magic Pro

Advait

Alt Magic is an AI-powered WordPress plugin that automatically generates descriptive alt texts and image filenames to enhance SEO, accessibility, and discoverability. Perfect for bloggers, agencies, and e-commerce sites seeking automated SEO image optimization.
<h3>Customer Reviews</h3>
⭐⭐⭐⭐⭐ Rated 4.8 stars on G2 – <a href="https://www.g2.com/products/alt-magic-ai-powered-alt-texts-at-scale/reviews" rel="nofollow ugc">Read reviews on G2</a>
<h3>Watch Alt Magic Plug-in in Action:</h3>
<iframe loading="lazy" title="Boost Image SEO Instantly! 🔥 WordPress Alt Text Automation with Alt Magic (Full Walkthrough)" width="750" height="422" src="https://www.youtube.com/embed/lHqcZ2Egz4Y?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
<h3>Features:</h3>
Automatic Generation: Every newly uploaded image is automatically analyzed and contextually relevant alt text is added to the image properties.
One-Click Bulk Generation: Generate alt text for existing images with a single click, saving you hours of manual work.
Extensive Image Formats: Support for all common image formats including JPG, JPEG, PNG, GIF, WebP, AVIF, and SVG files, ensuring compatibility with your entire image library.
Bulk Processing: Use our bulk generation tool to add alt text to multiple existing images in your media library at once.
Processed Images History: View and manage all images that have been processed by Alt Magic, with the ability to edit or regenerate alt text directly from this interface.
Cover All Media Properties: Automatically add not just alt texts, but also captions, titles, and descriptions to your images.
Contextual And Keyword Rich: All generated alt texts are intelligently crafted based on the content and context of your images and surrounding text.
SEO Plugin Integration: Seamlessly integrates with popular SEO plugins like Yoast, Rank Math, SEO Press, Squirrly SEO, and AISEO to create keyword-rich alt texts that boost your SEO.
WooCommerce Optimization: Enhanced support for WooCommerce stores with intelligent alt text generation that includes product names, features, and benefits in the alt text, improving your product image SEO and discoverability.
Multilingual Support: Generate alt texts in over 150 languages. Perfect for multilingual websites and global e-commerce stores.
AI-Powered Image Renaming: Automatically rename uploaded images with descriptive, SEO-friendly filenames using AI analysis of image content.
Manual Image Renaming: Full control with manual renaming options for fine-tuning image filenames to your specific needs.
<h3>Data Handling:</h3>
The plugin sends image data to our servers for processing, which allows us to deliver accurate alt texts. The plugin also fetches credits data from the AltMagic account. 
For more information, please refer to: 
– <a href="https://altmagic.pro" rel="nofollow ugc">Service Link</a> 
– <a href="https://altmagic.pro/terms-of-service" rel="nofollow ugc">Terms of Use</a> 
– <a href="https://altmagic.pro/privacy-policy" rel="nofollow ugc">Privacy Policy</a>

Alt Magic: AI Powered Alt Texts & Image Renaming


It's a great addition to my content marketing tools


Great addition to my content marketing tools


Alt Magic saved me so much time by automatically generating alt text for all my images. The AI descriptions are accurate and make my site more accessible. Setup was easy and it works great so far. Totally recommend it!


Super helpful plugin!

Automatically generate SEO-optimized ai alt texts and rename images using AI. Improve accessibility, rankings, and WooCommerce product image visibilit …

AI Auto Alt Text Generator vs Alt Magic: AI Powered Alt Texts & Image Renaming