Adding favicon to TYPO3 using TypoScript
This is one of the easier tasks out there. All you have to do is add the following typoscript to the page object:
page.shortcutIcon = fileadmin/images/favicon.ico
The favicon is displayed in the address bar of the browser as well as in the bookmarks. It can also appear in other places, for example with tool that generate web page screenshots and similar utilities.