A simple content script injector that makes one-click copy (and open in codepen) for code blocks possible on stackoverflow.

Download extension on webstore

Content script injected into page causes `Edit on codepen` and `Copy code` buttons to be appended to each `<pre>` block

Clicking `Copy code` copies code in `<pre>` to clipboard

Clicking `Edit on codepen` posts code in `<pre>` to codepen.io