Skip to content
Skills
Problems
Questions
Drills
Roles
Skills
Interview
Contest
Leaderboard
Problems
Questions
Drills
Roles
Skills
Interview
Contest
Leaderboard
Home
/
Frontend Developer
/
Questions
/
Web Performance
Frontend Developer
Web Performance questions
11 questions on Web Performance for frontend developers, easiest first.
Easy
2
Native lazy loading for images
easy
What defer does on a script
easy
Medium
4
What INP measures
medium
Content jumps when images load
medium
Slow LCP from the hero image
medium
Caching fingerprinted bundles
medium
Hard
5
Avoiding layout thrashing
hard
Reducing the initial bundle
hard
Janky slide-in animation
hard
Slow click handler hurts INP
hard
Importing one function pulls a whole library
hard
