Log in | BugHunt

Challenges 🐛 Daily 30 Days Errors Visualizer Leaderboard

Log in to BugHunt

Debug real bugs, learn the patterns.

Email

Password

Or

Don't have an account? Sign up

Free debugging practice for CS students. Fix real bugs, learn the patterns behind them.

☕Buy me a coffee

Practice

All challenges
Python debugging exercises
JavaScript debugging exercises
Interview debugging
Beginner friendly
Python visualizer
Free certificates
30 Days of Debugging
Stump a coworker
Embed on your site

Bug patterns

Off-by-one errors
Infinite loops
Null and undefined errors
Type errors
Common errors
All bug patterns

Account

About Privacy Terms Contact

© 2026 BugHunt

Your code runs in your browser, never on our servers.