This Conditional Tag checks if the main page is a posts or a Page. This is a boolean function, meaning it returns either TRUE or FALSE. It returns TRUE when the main blog page is being displayed and the Settings->Reading->Front page displays is set to "Your latest posts", or when is set to "A static page" and the "Front Page" value is the current Page being displayed.
<?php is_front_page(); ?>
This tag does not accept any parameters.
If you are using a static page as your front page, this is useful:
<?php bloginfo('name'); ?> » <?php is_front_page() ? bloginfo('description') : wp_title(); ?>
is_front_page() is located in