Verifying it works.
WHAT TO TEST ON
Real devices, primarily Browser developer tools, for rapid iteration Different browsers, since rendering differs
WHY REAL DEVICES
Emulation does not reproduce touch behaviour, performance or real network conditions.
WHAT TO PRIORITISE
Whatever your own visitors actually use.
HOW TO ESTABLISH THAT
Your analytics, rather than assumption.
WHAT TO TEST
Every important path, not only the homepage Forms, particularly Behaviour with slow connections Behaviour with images failing to load
WHAT TO CHECK SPECIFICALLY
Text readable without zooming No horizontal scrolling Targets large enough Nothing overlapping or cut off
WHAT TO TEST WITH THE KEYBOARD
Every interactive element, reachable and operable.
WHAT TO DO ABOUT OLDER BROWSERS
Decide what you support, based on your visitors.
WHAT APPROACH TO TAKE
Ensure the core content and function work everywhere, with enhancements where supported.
WHY
A page failing entirely on an older browser excludes people unnecessarily.
