Before You Delete
Please be aware that deleting your account is irreversible. We can't help you recover your account after deletion. When you delete your account, you remove all of your Pens, Posts, assets, comments, and likes. Your username will be released for re-use.
You don't need to delete your account to cancel a PRO subscription. If you want to keep your free CodePen account but cancel a paid subscription, go to https://codepen.io/signup/plans/ and click the "Downgrade" link under "Free Plan".
Export Your Pens
If you want to save any of the code from your Pens, export them. There is no way to export your Pens after you delete your account.
How to Delete Your Account
On the Settings page, make sure you're on the Account tab. Scroll down to the "Delete Account" section, and click the black "Delete Account" button.
Remember, deleting your account completely destroys it. Nothing will be left from your time at CodePen.
After you click the "Delete Account" button, a warning will pop up, explaining what will happen to your account when you delete it. If you are sure you want to delete your account, click the button that says "I Understand, Please Delete My Account".
After you click that button, your account will be deleted. If you have a PRO membership, your subscription will not renew and you will not be billed again.