From Manual Mayhem to AI Magic: Building an Automated Alt Text Solution for WordPress

Source: Dev.to

As developers, we build amazing things for the web, but the “boring” parts—SEO and accessibility—often get pushed aside. One of the most common culprits? Alt text for images.

If you’ve ever managed a WordPress site with hundreds or thousands of images, you know the pain. Manually writing descriptive, SEO‑friendly, and accessible alt text for each image is a monotonous, time‑consuming nightmare. That’s the problem I faced, which led me to create Alt Audit—a WordPress plugin and SaaS platform that automates alt‑text generation using AI.

Why Alt Text Matters

• SEO – Google uses alt text to understand image content and rank pages in Image Search.
• Accessibility (WCAG/ADA) – Screen readers rely on alt text to describe images to visually impaired users.
• Legal Compliance – By 2026, accessibility is a legal requirement for many businesses.

Building Alt Audit

Analyzing Images

Raw object detection alone isn’t enough. An AI that returns “Person, Mountain, Blue” makes poor alt text.
The solution combines:

• Computer Vision – Identifies objects and scenes in the image.
• Large Language Models (LLMs) – Transform those labels into a coherent, descriptive sentence, e.g., “An adventurer standing on a snowy mountain peak under a clear blue sky.”

Offloading the Heavy Lifting

To keep WordPress sites fast, all AI processing happens on the Alt Audit SaaS backend. The architecture uses Laravel with Redis for job queuing, allowing thousands of images to be processed simultaneously across different user sites while preventing timeouts on shared hosting.

Getting Started

• Plugin: Alt Audit on WordPress.org
• SaaS platform: Altaudit.com

I’d love to hear from the community: How do you currently handle image accessibility? Have you tried automating your SEO workflow yet?