To change the interface text size (including the Menu Bar), install the following Add-on. *'''''Theme Font and Size Changer''''': https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer/ To change the font size in the web page display area (where you are reading this message): *See --> http://support.mozilla.com/en-US/kb/Page+Zoom *See --> http://support.mozilla.com/en-US/kb/Text+Zoom *Add-ons: **'''''Default FullZoom Level''''': https://addons.mozilla.org/en-US/firefox/addon/default-fullzoom-level/ **'''''NoSquint''''': https://addons.mozilla.org/en-US/firefox/addon/nosquint/ ***More info on NoSquint: http://urandom.ca/nosquint/ '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You may need to update some plug-ins. Check your plug-ins and update as necessary: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox] *Adobe PDF Plug-In For Firefox and Netscape: [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox] *Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]