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How do you change the size of the address bar? The font is too small to read on our TV from across the room.

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Add a setting to change the address bar size.

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Adjust the display size in Windows control panel for a global setting, or use this option within Firefox (only 3 levels of font size): https://support.mozilla.org/en-US/questions/1186679#answer-1032140

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You can set layout.css.devPixelsPerPx to 1.0 (default is -1) on the about:config page. Adjust its value in 0.1 or 0.05 steps (1.1 or 0.9) until icons or text looks right.

  • modifying layout.css.devPixelsPerPx affects user interface and webpages (global zoom)

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

Firefox has a Zoom section in Options/Preferences to set the default zoom level for webpages.

  • Options/Preferences -> General -> Language and Appearance -> Zoom

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That works to zoom, but doesn't change the font size in the search bar, see attached pic.

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You likely need to create your userChrome.css file (if you haven't yet) with the following line:

#urlbar {font-size: 14pt !important}

Source + more info

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