is_archive()
Determines whether the query is for an existing archive page.
WordPress File wp-includes/query.php
is_attachment()
Determines whether the query is for an existing attachment page.
is_author()
Determines whether the query is for an existing author archive page.
is_category()
Determines whether the query is for an existing category archive page.
is_comment_feed()
Is the query for a comments feed?
is_date()
Determines whether the query is for an existing date archive.
is_day()
Determines whether the query is for an existing day archive.
is_embed()
Is the query for an embedded post?
is_favicon()
Is the query for the favicon.ico file?
is_feed()
Determines whether the query is for a feed.