Normalize Website Domains from Excel URL Lists

Extracting domain names can make a long Excel URL list easier to group and compare. The Ablebits guide presents formula variations for keeping or removing a leading www component and discusses addresses using different protocols. That distinction affects how equivalent sites appear in the cleaned list.

Choose a consistent domain convention before aggregating results. Test URLs with a path, a different protocol, and no www prefix rather than checking only one familiar form. Keep the original URL column so the full source location remains available after the simplified domain field is created.