Developer & Code
CodePen Username Availability Checker
CodePen is a social development environment for front-end designers and developers.
CodePen Username Rules & Requirements
Before selecting your username, ensure it conforms to CodePen’s official account registration guidelines:
| Minimum Length | 1 characters |
|---|---|
| Maximum Length | 30 characters |
| Allowed Characters | Alphanumeric letters and hyphens |
| Special Restrictions | No underscores allowed in CodePen usernames. |
| Public Profile URL | https://codepen.io/{username} |
| Official Registration Page | https://codepen.io/accounts/signup/user/free↗ |
How to Claim or Change Your Username on CodePen
1
Check Availability
Use the input above to confirm your handle satisfies all formatting constraints and character limits.
2
Visit Official Page
Click the "Claim on CodePen" button to navigate directly to the verified sign up or profile settings.
3
Secure & Save
Complete registration immediately to prevent automated bots or squatters from claiming your handle.
What to Do If Your Desired CodePen Handle Is Already Taken
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