How to Turn on the Develop Menu in Safari on Mac Apr 28, 2021, 8:30 am EDT | 2 min read When you right-click on any web page in Safari on Mac, it doesn’t reveal the Show Page Source and Inspect Element buttons. To see these, you need to enable the Develop menu—we’ll show you how to do that. Once you’ve enabled the Develop menu, right-clicking a blank space on any website will reveal the Inspect Element and Show Page Source buttons. These allow you to take a look at the source code of any website, which is useful for things like downloading images from websites and debugging code or finding out what it looks like behind any site (for website designers).