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Introduction To Greasemonkey Add-on For Firefox

Lately, I have been writing about many interesting Greasemonkey scripts. Even through the Greasemonkey add-on has been installed 17.5 million times, many users still don’t know what it is, how to use it, or why to use it. In this post, I will do my best to explain what is this add-on is all about.

What Is Greasemonkey

Just like there are hundreds of add-ons out there for Firefox, one among them is called Greasemonkey. So what does this add-on do? Wikipedia has explained this superbly,

This add-on allows users to install scripts that make on-the-fly changes to most HTML-based web pages. As Greasemonkey scripts are persistent, the changes made to the web pages are executed every time the page is opened, making them effectively permanent for the user running the script. Greasemonkey can be used for adding new functions to web pages (for example, embedding price comparison in Amazon.com web pages), fixing rendering bugs, combining data from multiple webpages, and numerous other purposes.

Why To Use It

This is one of the most important questions people ask me. Suppose you are listening to a song on YouTube and can’t understand the lyrics properly. Now to search for it’s lyrics you will have to Google it, but wait, there is even an easier method. YouTube Lyrics is a Greasemonkey script which adds a widget on the right sidebar that can show you the lyrics of the current song being played.

Greasemonkey scripts generally make the website look the way you want it to be, in other words, you can modify the look of the webpage instantly. So if you want to modify the webpage to give it a more friendlier look, or you want to add more features to the website, give this add-on a go.

How To Use It

Now that’s a good question. Just like you use every other add-on for Firefox, this one is no different. Greasemonkey is basically a platform that allows you to install various scripts. Once Greasemonkey add-on has been installed, just head over to UserScripts where you will find all types of useful scripts. To install any script, first click the Install button, then click Install again when a pop-up window shows up and you are done. To manage your scripts, disable them, or uninstall them go to Tools > Greasemonkey > Manage User Scripts. Enjoy!


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