Hi,

plz go through this link

https://support.mozilla.org/en-US/kb/font-size-and-zoom-increase-size-of-web-pages?esab=a&s=how+to+increase+the+font+size&r=0&as=s

Regards Deepak Krishnan PR

Reset the page zoom on pages that cause problems.

• View > Zoom > Reset (Ctrl+0 (zero); Command+0 on Mac)

• http://kb.mozillazine.org/Zoom_text_of_web_pages

Change the serif font size and minimum font fixed the issue. I must have changed that during some tweaking but thought that it would reset once I reinstall FF. Is there a reset to factory setting option in FF like IE???

hey, yes you can reset firefox like it's described here: Refresh Firefox - reset add-ons and settings

Thanks . I reset my instance and now I know what were original values and issues is fixed .

You can delete a possible user.js file and numbered prefs-##.js files and rename (or delete) the prefs.js file to reset all prefs to the default value including prefs set via user.js

• http://kb.mozillazine.org/Preferences_not_saved
• http://kb.mozillazine.org/Resetting_preferences

The Cor-el I did that by the option provided in the post ... under troubleshooting menu . So things are working fine now ... Thanks Again

Yes, I know. You can give that a try if you need it again in the future. There is usually no need to reset Firefox for setting changes that you want to undo if you can do it by deleting a file or reset involved user set prefs on the about:config page.