In the footer of our website we want have the option to select the main pages.
But the "pages" needs to be translated to the best German equivalent. The literal translation that I found was
Seiten
But how common is that for websites?
In the Web context, "Seiten" would be the correct and common translation for "pages".
If this link list is the navigation/menu of your website, you could call it "Navigation" or "Menu"/"Menü".
Guntram Blohm suggested to use "Links", but I think this would typically be associated with external links, for example to profiles on social media sites etc.
On the footer of a web page, I'd use the word "Links". If you want to make a point that these are links to pages on your site, "Inhalt" or even "Inhaltsverzeichnis" come to mind, but normally i'd reserve these words for more or less comprehensive index pages.
I would use "Inhalt" or "Inhaltsverzeichnis".
Inhalt
(= content).