If in your Page URLs report you are seeing the same page URL appear under different entries, then you can use the
setCustomUrl command which lets you overwrite the default Page URL by your custom URL for one or several pages.
_paq.push(['setCustomUrl', "/index.html"]); to track all these pages under the same URL “index.html” in Matomo.
just before the line:
Then all your pages will now be tracked as lowercase, eg. “Default.aspx” or “DEFAULT.aspx” will be tracked as “default.aspx”.