Web 1.0 primarily consisted of static HTML pages viewed through browsers, while Web 2.0 encompasses more interactive content like user-generated posts and dynamic applications. Web 1.0 content was read-only, while Web 2.0 allows users to both consume and contribute information. Additionally, Web 1.0 was developed mostly by coders, whereas Web 2.0 has enabled mass participation through technologies like folksonomies, AJAX, RSS, and APIs.