Heads up! This blog post hasn't been updated in over 2 years. CodePen is an ever changing place, so if this post references features, you're probably better off checking the docs. Get in touch with support if you have further questions.
Brand new feature for you folks! Asset hosting allows you to upload files super quickly and easily to CodePen to use while building Pens. It is a simple as drag-and-dropping files. Check out this 3 minute video showing you how it works:
Because hosting files costs money for both storage and bandwidth, this feature is for PRO members only. If you are already PRO, you have this feature immediately. If you aren't PRO yet, you can upgrade anytime.
You can learn more about about Asset Hosting on our documentation feature page.