ADA (Americans with Disabilities Act) web accessibility lawsuits have been increasing by over 20% annually, with over 4,600 lawsuits filed in 2024 alone. Images without alt text are one of the most commonly cited violations. This guide explains the legal landscape, what's required, and how to achieve compliance efficiently.
Table of Contents
1. What is ADA Web Accessibility?
The Americans with Disabilities Act (1990) was originally written for physical spaces — ramps, elevators, braille signage. But courts have increasingly interpreted Title III of the ADA to apply to websites as "places of public accommodation." While there's no explicit federal web accessibility statute (yet), the Department of Justice has consistently stated that websites must be accessible, and courts agree.
The practical standard that courts reference is WCAG 2.1 Level AA (Web Content Accessibility Guidelines). If your website meets WCAG 2.1 AA, you're in a strong legal position. If it doesn't — especially if basic requirements like image alt text are missing — you're vulnerable to lawsuits.
2. What ADA Requires for Images
Under WCAG 2.1, Success Criterion 1.1.1 (Non-text Content) states that all non-text content must have a text alternative. For images, this means:
- All informative images must have descriptive alt text that conveys the same information as the image
- Decorative images must have empty alt attributes (
alt="") so screen readers skip them - Functional images (buttons, links) must have alt text describing the function, not the appearance
- Complex images (charts, graphs, infographics) need either extended alt text or a nearby text description
- Image maps and CAPTCHAs have additional specific requirements
3. The Lawsuit Landscape
Web accessibility lawsuits in the US have grown dramatically. The numbers are sobering: over 4,600 ADA web accessibility lawsuits were filed in 2024. Average settlement costs range from $5,000 to $150,000, with some exceeding $500,000. E-commerce sites are the most frequent targets, accounting for over 75% of lawsuits. Missing alt text is cited in the majority of accessibility complaints.
Industries most targeted include retail and e-commerce, food service and restaurants, travel and hospitality, banking and financial services, and healthcare. The common thread is consumer-facing websites with images as a core part of the experience.
4. WCAG 2.1 Image Requirements in Detail
Level A (Minimum):
- 1.1.1 Non-text Content — All images have alt text
Level AA (Standard — what courts reference):
- 1.4.3 Contrast — Text in images meets contrast ratios
- 1.4.5 Images of Text — Use real text instead of images of text where possible
Level AAA (Best practice):
- 1.4.9 Images of Text (No Exception) — No images of text at all
5. How to Audit Your Site for Image Compliance
Start with an automated audit, then follow up with manual review:
- Screaming Frog — Crawl your site and export all images missing alt text (free for up to 500 URLs)
- WAVE (WebAIM) — Browser extension that highlights accessibility issues on any page
- axe DevTools — Chrome extension for detailed accessibility testing
- Lighthouse (Chrome DevTools) — Built-in audit includes accessibility checks
- SightSEO Free Scanner — Upload an image to get instant AI-generated alt text
Pay special attention to: product images (most valuable), form buttons and interactive elements (functional alt text), charts and data visualizations (complex descriptions needed), and logo images (should say the company name).
6. How to Fix Compliance Quickly
For sites with hundreds or thousands of images, the fastest path to compliance is AI-powered automation:
- Install SightSEO — 30 seconds to install the WordPress plugin
- Run Bulk Generate — Processes all images missing alt text in your entire library
- Review results — Spot-check the generated alt text, adjust where needed
- Enable auto-generate — All future uploads get alt text automatically
- Document compliance — Keep records of your accessibility efforts (useful in case of legal challenges)
Every alt text generated by SightSEO follows WCAG 2.1 AA guidelines: natural language descriptions, appropriate length (80-150 characters), and meaningful content that conveys the equivalent information.
7. ADA vs EAA: Global Comparison
If you operate internationally, you may need to comply with both US and EU regulations:
ADA (United States): Federal civil rights law, enforced through private lawsuits, no small business exemption for websites, WCAG 2.1 AA increasingly cited as standard, settlements range $5K-$500K+.
EAA (European Union): Directive with national implementation since June 2025, enforced by national authorities, micro-enterprise exemption available, explicit WCAG 2.1 AA requirement, fines and market restrictions.
The bottom line: whether you serve US or EU customers, proper alt text on images is now a legal requirement. For a detailed guide on the European side, read our complete EAA compliance guide.
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