What type of webpage content is controlled by webmasters?

Main content refers to the primary information or substance of a webpage that directly relates to the site's purpose and objectives. This content is created, edited, and maintained by webmasters or content creators, ensuring that it aligns with the site's goals and provides value to its audience.

Webmasters have the ability to manage and update this content to maintain relevance, accuracy, and engagement with users. This includes text, images, videos, and other media that directly contribute to the user’s experience on the site. By controlling the main content, webmasters can optimize the page for better search engine rankings and user satisfaction.

In contrast, supplementary content, ads, and user-generated content often involve less direct control from webmasters. Supplementary content, while still relevant, typically supports the main content but is not the primary focus. Advertisements may come from third-party sources and can be subject to changes that webmasters might not oversee. User-generated content, such as comments or forum posts, is created by visitors rather than webmasters, which limits the control webmasters have over it. Thus, main content is distinctly under the direct management of webmasters.