The contents and interactivity of national library websites around the world is analysed. The study was confined to ninety nine selected national library websites. A checklist along with a data sheet was used as the tool for data collection and Microsoft Excel was used as the tool for data analysis. The analysis revealed that the websites have almost identical pattern of contents and interactivity. Majority of the websites used interactive applications. Facebook is the most preferred application followed by Twitter, RSS and blogs. The websites preferred extreme top right corner and extreme bottom right corner of their homepages to provide links to the applications and web objects. This study is useful for developing design standards for library websites and portals.