Extensionless URLs do not end with a trailing slash or a file extension. They map to the file in the same path with an html, htm or xml extension. For example, these URLs would serve the same file:
https://example.com/about
https://example.com/about.html
To serve files on extensionless URLs:
- Go to Site Settings / Routing
- Enable Serve Extensionless URLs and optionally Force Extensionless URLs
- Click Update Hosting Details
Serve Extensionless URLs is on by default for new sites.
Enabling Force Extensionless URLs redirects URLs with html, htm or xml extensions to extensionless versions. This ensures a single URL rather than serving the same file on two different URLs.