Lesson 21 / 26
Manual testing
Test accessibility by hand using only the keyboard, a screen reader such as NVDA, zoom and a structured checklist.
Testing checklist
- Use Tab to navigate. 2. Disable mouse in DevTools. 3. Test with screen reader (NVDA free on Windows). 4. Resize text 200%. 5. Use grayscale mode. 6. Test on mobile. 7. Read page outline via heading structure. 8. Check alt text on images.
NVDA quick start
Download free NVDA for Windows. Start with Browse Mode (arrow keys). Use Focus Mode (Enter) for forms. Alt+N toggles Browse/Focus.
Keyboard-only testing
Disconnect mouse completely. Use only: Tab (forward), Shift+Tab (backward), Enter (activate), Escape (close), Arrow keys (navigate).