What are you using to scroll?

Mouse wheel? Touchpad? Uo and down arrow keys on the keyboard?

Overall, if you hold the Ctrl key and use the mouse wheel that will change the Page Zoom level or Text Only Zoom level.

https://support.mozilla.org/en-US/kb/font-size-and-zoom-increase-size-of-web-pages

You can check for problems with the places.sqlite database (bookmarks and history) in the Firefox profile folder.

• https://addons.mozilla.org/firefox/addon/places-maintenance/

See also:

• http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
• https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file

Firefox keeps compressed .jsonlz4 in the bookmarkbackups folder, that you can use to restore the bookmarks.

• Bookmarks -> Show All Bookmarks -> Import & Backup -> Restore
• https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them

Do you have an "Old Firefox Data" folder on the desktop in case you have used the the Refresh feature in Firefox and have created a new profile?

• https://support.mozilla.org/kb/reset-firefox-easily-fix-most-problems

When you use the Firefox Refresh feature then a new profile is created and some personal data (bookmarks and history, form data, tabs) is automatically imported. The current profile folder will be moved to an "Old Firefox Data" folder on the desktop. Installed extensions and other customizations (toolbars, prefs) that you have made are lost and need to be redone.

It is possible to recover data from the "Old Firefox Data" folder on the desktop, but be cautious not to copy corrupted files to avoid carrying over problems.

I am super frustrated.... still cannot get my bookmarks back.... was told to refresh, now it says yahoo.com is not ok.... what is going on? can someone tell me what to do in plain english? Obviously I am not a computer wizard... Is my computer even safe? yahoo is no longer ok? (btw... looks like I can now scroll down info pages... originally tired the ctrl & mouse scroll button, but it made it so small I couldn't read it)

Try to copy the cert8.db file from the "Old Firefox Data" folder on the desktop to the current profile folder.

You can use this button to go to the current Firefox profile folder:

• Help -> Troubleshooting Information -> Profile Directory:
  Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
• http://kb.mozillazine.org/Profile_folder_-_Firefox

When you use the Firefox Refresh feature then a new profile is created and some personal data (bookmarks and history, form data, tabs) is automatically imported. The current profile folder will be moved to an "Old Firefox Data" folder on the desktop. Installed extensions and other customizations (toolbars, prefs) that you have made are lost and need to be redone.

It is possible to recover data from the "Old Firefox Data" folder on the desktop, but be cautious not to copy corrupted files to avoid carrying over problems.

• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

You can copy files like these to the current Firefox profile folder to recover specific data.

• bookmarks and history: places.sqlite
• bookmark backups: JSON backups in the bookmarkbackups folder
• SQLite files like cookies.sqlite (cookies) and formhistory.sqlite (saved form data)
• logins.json and key3.db (decryption key) for Passwords saved in the Password Manager
• cert8.db and possibly cert_override.txt for (intermediate) certificates stored in the Certificate Manager
• persdict.dat for words you added to the spelling checker dictionary
• permissions.sqlite for Permissions and possibly content-prefs.sqlite for other Site Preferences
• sessionstore.js for open tabs and pinned tabs and tab groups