Increase Firefox Address Bar Font Size

Martin Brinkmann
Mar 15, 2010
Updated • Apr 8, 2018
Firefox, Firefox add-ons

Make Address Bar Font Size Bigger is a Firefox add-on that provides you with the means to increase the font size of the browser's address bar.

Most web browsers offer some features to change the layout of the browser interface, and also a selection of elements on web pages when they get loaded in the browser.

It is for instance possible to change the default font type or size on pages that you visit in your browser of choice. This can be useful if you want the font to be of a certain type or size at all times, for instance if you find the default font size hard to read.

While you can achieve the same by zooming in on the page, zooming is usually set for a page or domain but not globally.

Even if you increase the font size on web pages using browser settings or zooming, you will notice that interface elements of the browser are not affected by this.

Many users who run into issues reading text on web pages because of small font size may also have issues reading interface text such as the web address or tab titles as well.

Firefox, without doubt the browser that is offering the best customization options, does not restrict access to interface elements.

Update: The extension is not compatible with Firefox 57 or newer. We suggest you use the excellent Theme Font & Size Changer instead which is compatible with newer versions of the browser.

Make Address Bar Font Size Bigger

The Firefox add-on Make Address Bar Font Size Bigger makes use of this by allowing users of the browser to change the font size of text displayed in the browser's address bar.

The extension increases the font size automatically. You will notice that this impacts not only the address of the site you are on itself but also the dropdown that is used to display suggestions when you type something in the address bar.

A side effect of this is that text uses more space on the address bar which in turn means that long urls may not be displayed in full anymore due to that.The extension is useful when you run Firefox on large display monitors and/or if you have bad eyesight and have difficulties reading address bar text or suggestions.

Make Address Bar Font Size Bigger can be downloaded directly from the Mozilla Firefox add-on repository. It is compatible with all Firefox versions.

You can achieve the same result by modifying Firefox's interface using CSS or by installing Theme Font & Size Changer which provides more control over the changes.

The main advantage of Make Address Bar Font Size Bigger is that it works without any configuration. It is still possible to uninstall it and install something like Theme Font & Size Changer to get better control over the resizing.

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Author Rating
5 based on 1 votes
Software Name
Make Address Bar Font Size Bigger
Software Category
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  1. Alex said on August 2, 2020 at 10:02 pm

    You can’t now use it as Firefox dropped support for such mods. Now you can manually switch some config settings and install a CSS file… but it is a trial and error way.

  2. Mark said on April 19, 2020 at 9:17 pm


    Anyone know where I can get the ‘Make Address Bar Font Size Bigger’? extension for Firefox?

    My old machine died – I had it on that and it was perfect! I need – NEED it again.

    Using a pre-quantum ESR version of Firefox.

  3. John Payton said on July 29, 2012 at 10:35 pm

    I need to know how to increase the font size in te address bar for outlook express and words

  4. Anonymous said on January 22, 2011 at 7:06 am

    This add-on suck,is to big font.

    1. Anonymous said on January 25, 2012 at 8:05 pm

      you can toggle it on and off.. its designed for bigger monitors… if you dont like it, dont use it.. or better yet make your own extension.. otherwise quit complaining!

  5. jonathan said on March 22, 2010 at 7:03 pm

    The “Make Address Bar Font Size Bigger” extension is not like stylish. Stylish is a addon that adds code editor for editing css in firefox… it requires that you know CSS and dom inspecting. My plugin requires No need to know CSS or any hand coding to style the font-size, like other extensions! Just Install and Enjoy!

    1. Shrijit said on March 23, 2010 at 7:25 am

      Dear Jonathan,
      Stylish is an addon that adds code editor for editing css in firefox…thats fine….but check the stylish script after installing stylish. Seems like you are not aware of “greasemonkey and stylish” scripts in firefox. The scripts are very simple and you can just install and see the change. I have updated my script for changing the fonts of tabs too…I am not against your add-on, but just saying that, the script has more functionalities.

  6. Shrijit said on March 17, 2010 at 9:46 pm

    My stylish theme – has more functionalities. It can change the font, font size of both address-bar and status bar :)

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