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Starting with the release of Firefox 73, and already available in Firefox Nightly, Firefox users can open the browser settings to set a global zoom level. Simply load about:preferences in the browser address bar or select Menu > Settings > General to access it.
Scroll down the page to the new zoom group setting. There you will find options to change the default zoom level from 30% to 300%. Note that global means that the zoom level is also applied to Firefox internal pages, including the settings page.
Loaded websites do not need to be reloaded as the zoom level is automatically applied to them. Firefox users who only want to zoom in on text can check the “Zoom text only” box on the settings page to enable this feature.
Firefox will highlight zoom levels in the address bar if they differ from the default zoom level. It is always possible to change a website’s zoom level using Firefox’s site-specific zoom level feature, and Firefox will remember this zoom level throughout sessions.
The zoom controls allow you to increase or decrease the size of an entire web page or simply the size of all text to improve readability. We will explain how this works.
How to Set a Default Zoom Level for all Websites
To do this, first make sure you are using the latest stable version of the browser, as this option is missing in older versions. Then you need to navigate to the next location to find the new setting :
Firefox > Options > General > Language and Appearance > Zoom
Click on the drop-down menu and select the new value you want to use on all websites, and that’s it. Firefox allows you to choose a value between 30% and 300%, the default setting being 100% – if you want to revert to the original settings later, this is the value you should choose from the drop-down menu.
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Firefox also has an additional option that allows you to “zoom in on text only”. This is particularly useful if you have difficulty reading the text on web pages, but on the other hand, it does not resize other elements of a website, such as menus or images. While this option may be useful for some people, it is best to stick to the global zoom setting.
How to Set a Zoom Level for a Website
If you want to quickly set a different zoom level for a specific website, click on the menu button in the upper right corner, then click on the plus (+) or minus (-) sign to zoom in or out. You can see the current zoom level in the address bar.
- Firefox remembers the zoom level you set for each website.
- If you only want to change the text size, click on “View” in the menu bar, move the mouse over “Zoom” and then click on “Zoom text only”.
- There are also some handy shortcuts you can use to quickly zoom in or out. Press Ctrl in Windows or Cmd on your Mac while doing one of the following:
- Scroll with the mouse to zoom in or out
Press the plus sign (+) to zoom in or the minus sign (-) to zoom out.
Press zero to reset the zoom level to 100%.
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CCNA, Web Developer, PC Troubleshooter
I am a computer enthusiast and a practicing IT Professional. I have years of experience behind me in computer programming, hardware troubleshooting and repair. I specialise in Web Development and Database Design. I also have a CCNA certification for Network Design and Troubleshooting.