TWEAKING FIREFOX
Have you noticed as years go by that web designers seem to be using smaller fonts?
Firefox users may know that 'CTRL +' / 'CTRL -' will expand / reduce the fonts and graphics on a web page, making it easier to read. If you find you are using this all the time then Tools > Options > Content will display a window where you can set the default font size. Increase this to 18 or 20 and you should find that text is easier to read. Photos and graphics stay the same size leaving more space for text.
But you may still be struggling to see your bookmarks or history as the Options > Contents menu doesn’t affect system fonts. To change these you need to go behind the scenes and find your Firefox profiles folder. You can find details of where this is stored on Windows, Macs and Linux systems at: https://kb.mozillazine.org/Profile_folder_-_Firefox
The folder normally contains a single folder with a name like wxyz1234.default which contains the actual profile. If you have updated your system, reinstalled Firefox or created multiple profiles there may be more than one profile. Choose the one with the latest ‘Date modified’ or use the Profile Manager described at: kb.mozillazine.org/Profile_Manager
Your profile contains your bookmarks, history and much more. Open the folder named “chrome”, this is where you may install two files: userChrome.css and userContent.css. These control the look of the system and web content respectively. You may find files: userChrome-example.css and userContent-example.css in the folder which you can copy, rename and customise. Or you can use any text editor to create userChrome.css from scratch. Here is a simple example:
/* Do not remove the @namespace line -- it's required for correct functioning */
@namespace url("https://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
/* Make all system font sizes 20 pt UGLY BUT READABLE! */
* { font-size: 20pt !important }
Save the four lines of the last paragraph in your ../Mozilla/Profiles/<Profile>/chrome folder as a plain text file with the name userChrome.css then restart Firefox. All the fancy looks will have gone but you WILL be able to read your menus! To put things back as they were delete the userChrome.css file.
For more information on customising Mozilla products see: www.mozilla.org/unix/customizing.html which contains your profile In that folder you will find a number of folders firefox.exe -profilemanager