If you prefer not to see snippets on the about:home page then you can set the <b>browser.aboutHomeSnippets.updateUrl</b> pref to an empty string on the <b>about:config</b> page. Delete the <b>storage\moz-safe-about+home</b> folder in the Firefox profile folder with Firefox closed ("3-bar" Firefox menu button > Exit/Quit) to remove snippets stored in IndexedDB and make Firefox use a default snippet set. You can use this button to go to the currently used Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) You can reset the browser.aboutHomeSnippets.updateUrl pref via the right-click context menu to the default value to re-enable the snippets.