Decode Displayed URLs will cause the URL that is displayed in search results to be URL-decoded, which includes replacing sequences with their proper characters.
This can be useful when URLs have words separated with spaces, which
are replaced with %20
to be a valid URL. Decode Displayed URLs
allows you to display the decoded version, making the files easier for
search users to read.
"this%20is%20a%0file.txt"
becomes
"this is a file.txt".