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Easily View Source of Included Files in Firefox

In the web development world, most of the design isn’t in the page HTML anymore, it’s been moved to the included CSS and Javascript files. The problem is that when you want to take a peek into the code there’s not a really simple way to view those CSS/JS files.

There’s an extension called JSView that will let you easily view the source of included files a couple of different ways.

Default Installation Usage

Once you’ve installed the extension, you’ll see a new option called “View Page Source – JSView”. It will take you to the same screen as the regular View Page Source dialog will…

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Now when you are in the View Source screen, the View menu will contain extra menu items that let you quickly access the included files.

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Quick Access Context Menu

Open up the JSView Options screen from the Tools menu, and uncheck the “Disable jsview popup menus” item to add the extra menus to the default right-click menu.

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You’ll also want to choose “Disable View Page Source – JSView” to disable the redundant JSView item on the menu. Now when you right-click in any page, you can quickly get access to the source.

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Note that if you want the most minimal experience, you could choose to disable all the options and simply access the functions from the view source window.

Other Options

You can also choose whether to open in a new window…

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Or whether to use an external editor…

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This is a really useful extension that has now become part of my web development toolkit.

Download JSView Extension from Mozilla Add-ons

Lowell Heddings, better known online as the How-To Geek, spends all his free time bringing you fresh geekery on a daily basis. You can follow him on if you'd like.

  • Published 10/20/07

Comments (1)

  1. faraz

    Thanks for the article.
    I had read in some forum that I could view css files too with firefox and was looking for something like this.

    I am glad I found this page.

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