With version 22, Firefox is now paying attention to the system wide zoom setting in Windows 7. This is resulting in both the text and images being enlarged in Firefox for those of us who set the global zoom at “Medium – 125%” or “Larger – 150%” in Windows 7 Control Panel – Appearance and Personalization – Display.
Ok, so what if those of us with high pixel density screens want to enlarge just text while leaving images to display at their native resolutions in Firefox 22? (I don’t want to see larger images in Firefox if they’re blurry.)
First, tell Firefox to ignore the global system zoom setting:
Type about:config into the Firefox address bar. Change the value of layout.css.devPixelsPerPx from -1 to 1.
You’ll notice that everything now looks pretty small in Firefox. That’s ok. Install No Squint. This will allow you to set global and page specific text-only zoom settings for Firefox.
If you find that Firefox’s interface text is now too small (I did) you may also install Theme Font & Size Changer. This is a very simple addon that will allow you to bump up the size of the text used in Firefox’s interface.
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