Rename files before uploading them. Change HTML documents' URL aliases before publishing them.
Filenames and URL aliases should:
- be lower case
- have no spaces
- have no special characters
For example, a PDF document filename becomes 'concessionary-bus-travel-local-authority-guidance.pdf'.
A HTML document's URL alias becomes 'concessionary-bus-travel-local-authority-guidance-html'.
You can use online tools to help, for example www.htmlescape.net/seo_friendly_url.html.