Don't panic, and don't ignore it either. Here's what these letters actually cite, and what to check first.
If you run a Shopify or WooCommerce store and just received a letter claiming your site violates the Americans with Disabilities Act, you're not alone — e-commerce accessibility demand letters have become a volume business for a handful of law firms. The good news: almost all of them are built from the output of an automated WCAG scanner, not a manual review. That means you can usually see exactly what they're pointing at within minutes.
Demand letters rarely list unique findings. In practice they cluster around a small set of automatically-detectable WCAG 2.1 failures:
If the letter includes a scan report or a list of URLs and issue counts, it almost certainly came from an automated tool — which means you can run the same class of check yourself, for free, before deciding how to respond.
Unlike contrast ratios or keyboard-navigation audits, missing alt-text can be counted precisely, automatically, across a whole catalog, in one pass — which is exactly why it's the finding plaintiffs' scanners lead with, and exactly why it's the fastest thing for you to verify and start fixing.
For the full pre-emptive checklist (the ten things worth checking before a letter ever arrives), see the Shopify & WooCommerce ADA compliance checklist. Fixing what's flagged? See how to bulk add alt text across your catalog.
This page is a technical starting point, not legal advice. If you've received an actual demand letter or lawsuit, talk to a lawyer experienced in digital accessibility law before responding.