CodePen is a powerful prototyping and demoing tool. Now you can show off your pens without the CodePen header; simply click the True Full Page icon in the location bar to toggle the header on or off. True Full Page currently supports 'full', 'pen', and 'details' views. Please report any bugs to the github page for this extension, https://github.com/chrisbolin/truefull. This extension is not associated with or built by CodePen.
You can Follow the below Step By Step procedure to install the True Full Page for CodePen Chrome Extension to your Chrome Web browser.
It is the True Full Page for CodePen Chrome extension download link you can download and install Chrome Browser.
Toggle classes and attributes
Search for pens from CodePen.io in the omnibox.
A handy generator for all of your CSS3 needs from within the browser
Logs function calls in DevTools console.
Quick access to Chrome developer pages in the context menu.
Blazing fast & offline playground for your web experiments