Best AI ALT Text Generators for WordPress

ALT text isn’t difficult to write. It’s just difficult to keep writing.

When a WordPress site is small, adding image descriptions or ALT texts feels like a natural part of publishing. You upload an image, you add a sentence, you move on. But as the Media Library grows, that habit is usually the first thing to slip.

Images get uploaded faster than descriptions get written. Old content never gets revisited. Accessibility gaps slowly pile up, not because site owners don’t care, but because the process simply doesn’t scale.

That’s where AI-powered ALT text generators come in. With more WordPress plugins promising to automate image descriptions, I tested the most relevant options to see how they actually behave in real-world use, not just in feature lists.

Why ALT Text matters for accessibility and SEO

ALT text often gets treated like a technical checkbox, but it has very real consequences.

For users who rely on screen readers, ALT text is the only way images are communicated. When it’s missing, images simply disappear from the experience.

Search engines rely on ALT text for similar reasons. It helps them understand what an image represents and how it relates to the surrounding content. While manually written descriptions are usually more precise, keeping them consistent across hundreds or thousands of images rarely holds up over time.

What makes a good AI ALT Text generator?

Not all plugins that generate ALT text work the same way.

Some rely almost entirely on filenames. Others actually analyze the image itself. The better tools usually go a step further and factor in page content, product data, or site context.

Based on hands-on testing, the tools that perform best tend to offer:

• AI-based image analysis, not just filename rules
• Context awareness when page or product data is available
• Bulk processing for large Media Libraries
• Automatic generation for new uploads
• Pricing that stays predictable as image counts grow

These points shaped the comparison below.

Top AI ALT Text generators for WordPress

The plugins listed here generate ALT text using AI, either through image recognition alone or combined with contextual data.

1. ShortPixel Image Optimizer – Best for context-aware, large-scale image SEO

ShortPixel Image Optimizer combines both image optimization and AI Image SEO with image recognition with contextual analysis. Instead of looking at images in isolation, it can also use the page, post, or product where an image appears, along with optional site-wide context you define.

This means the same image can receive different ALT text depending on how it’s used. An image inside a blog post can be described differently than the same image reused in normal page or landing page.

Beyond ALT text, the plugin can also generate image titles, captions, and descriptions. Everything is created directly inside the WordPress Media Library and can be processed in bulk or generated automatically on upload.

Key features

• Image Optimization and CDN delivery
• AI image analysis with page and site title context
• ALT text, titles, captions, and descriptions
• Bulk processing across the Media Library
• Automatic generation on upload
• Configurable character limits, languages, context and prompt
• WooCommerce support
• Multilingual support (130+ languages)
• WCAG-aligned accessibility output
  

Cost

$13,33 per Unlimited Image optimization and Unlimited AI Image SEO (Unlimited ALT texts, titles, captions, descriptions)

2. AltText.ai – Best for simple, ALT-only generation

AltText.ai focuses on one thing: generating ALT text. It doesn’t attempt to populate titles, captions, or descriptions, which keeps the workflow simple and predictable.

The plugin analyzes images visually and can pull keyword context from popular SEO plugins like Yoast, Rank Math, SEOPress, All in One SEO, The SEO Framework, SmartCrawl, and Squirrly SEO. For WooCommerce sites, its Ecommerce Vision feature includes product names in generated ALT text.

AltText.ai works well for sites that want straightforward automation without managing additional image metadata fields.

Key features

• AI-based image recognition
• Bulk ALT text generation
• SEO plugin integrations
• 130+ languages supported
• Custom prompt support
  

Cost

$40 per 1,000 ALT texts

3. ImageSEO – Best for multilingual SEO workflows

ImageSEO generates ALT text and image titles with a strong focus on SEO workflows. Originally popular in the French market, it now supports multiple languages and includes social metadata generation for platforms like Facebook and Twitter.

The plugin supports bulk optimization and can also rename image files as part of the process. In addition to image metadata, it generates Open Graph and Twitter Card data, which can be useful for image-heavy content shared on social platforms.

While it handles multilingual output well, the generation relies more on general SEO signals than on deep page-level context.

Key features

• ALT text and title generation
• Bulk processing
• Filename optimization
• Multilingual support
• Social metadata (Open Graph, Twitter Cards)
  

Cost

$29,57 per 1,000 ALT texts

4. Alt Magic – Best for WooCommerce stores

Alt Magic is built primarily around WooCommerce workflows. It generates ALT text using AI image recognition and integrates directly into product image management.

In addition to ALT text, it can populate image titles, captions, and descriptions using the same analysis. It also supports AI-powered image renaming, generating SEO-friendly filenames automatically.

The plugin integrates with several SEO tools, including Yoast, Rank Math, SEOPress, Squirrly SEO, and AISEO. With support for over 150 languages, it’s well suited for international product catalogs.

Key features

• AI-based ALT text generation
• Image titles, captions, and descriptions
• SEO plugin compatibility
• 150+ languages supported
• AI-powered image renaming
• Bulk processing
  

Cost

$19 per 1,200 ALT texts

5. AI for SEO – Best for Rank Math and Yoast users

AI for SEO integrates tightly with established SEO plugins like Rank Math and Yoast. It generates ALT text, titles, captions, and descriptions and can run in an “Autopilot” mode that fills in missing fields without overwriting existing data.

This setup works best for sites already managing SEO through dedicated plugins and comfortable handling API-based workflows.

Key features

• ALT text, title, caption, and description generation
• Rank Math and Yoast integration
• Bulk processing with Autopilot mode
• Media-focused SEO tools
  

Cost

$19 per 1,500 ALT texts

Conclusion

Once you start using these plugins on a real site, the differences show up quickly. Context handling, bulk speed, features and a flat pricing always matter.

A short test run on a few images is usually enough to see which tool best fits your workflow.