A11y 101 – 3.3.3 Error Suggestion (tarnoff.info)
You submit a form. An error flashes: “Invalid.” That’s it. Invalid what? Invalid how? Invalid because you used the wrong format, or invalid because the email is already taken, or …
“Invalid input” isn’t an accessible error. It’s a dead end. WCAG 3.3.3 asks us to help users recover, not just tell them they failed.
tarnoff.info/2026/07...
