All Practice Tests
Performance Practice
Core Web Vitals, rendering, bundle optimization, and profiling.
Level 2: Easy
Core Web Vitals and rendering
8 questions12 min
Locked
Pass Level 1
Level 3: Intermediate
JavaScript performance and bundle optimization
8 questions15 min
Locked
Pass Level 2
Level 4: Advanced
Rendering performance, memory, and profiling
8 questions18 min
Locked
Pass Level 3
Level 5: Expert
Advanced optimization, metrics, and architecture
8 questions20 min
Locked
Pass Level 4
Score 75% or higher on a level to unlock the next one. Your progress is saved automatically in your browser.