When I tested one of my websites with Nibbler it gave the following useful advice:
Adding or removing a trailing slash to all URLs of this site returns an error page (404). This is OK as no content is being duplicated, but visitors might try browsing to the pages of this website with or without a trailing slash. Ideally, the alternate URL should redirect to the correct page.
So I created this easy bundle that automates these kind of redirects.
Below you will find the default configuration
# Router Unslash
amnl_router_unslash:
permanent: false # True = 301, False = 302
public: true # Public cache?
maxage: 1800 # Cache-Control max-age
smaxage: 21600 # Cache-Control s-maxage