There are several software tools that can make your work of modifying themes more efficient. Though no specific tools are required to work with Drupal themes, there are a couple of applications that you might want to consider adding to your tool kit.

I work with Firefox as my primary browser, principally due to the fact that I can add into Firefox various extensions that make my life easier. As mentioned in the previous chapter, installing the Web Developer extension is hugely helpful when dealing with CSS and related issues. I highly recommend the combination of Firefox and the Web Developer extension to anyone working with Drupal themes.

Of course, it must be said that in addition to working with Firefox, you should check your work in all the most popular browsers and across the various devices that your target audiences might employ. Checking your work in only one browser is never sufficient.

Next, when it comes to working with PHP files and the various template...