Level: Advanced
Designing exclusively for fast, reliable connections excludes a real portion of any global or even local audience experiencing genuinely constrained conditions.
Prioritize Core Content and Functionality First
Ensuring the most essential content and actions work well even under constrained conditions, with enhancements layered on for faster connections, serves a wider range of real visitors.
Provide Graceful Degradation, Not Just a Broken Experience
A page that fails to load additional enhancements should still function usably at its core, rather than breaking entirely when a non-essential resource fails to load.
Test Deliberately Under Throttled Conditions
Simulating a slow or unreliable connection during testing reveals genuine experience gaps that testing exclusively on fast, stable connections would never surface.
Next step: Use the Page Speed Checker to test your page's actual performance under real-world conditions, not just a fast, stable connection.