Since it has been a few years since I needed to set up a new web site, I haven't been to the Observatory for a while. For those that don't know, it's an excellent way to check your web site against modern standards for configuration. I'm glad to see Mozilla still has it up and running and (at the time of writing) is planning a new version!
To use it, simple visit: https://observatory.mozilla.org/analyze/
Edit the URL to add the site you wish to analyze eg:
After a brief scan you'll receive a score and list of areas to adjust for improvements. Each recommendation comes with a link to more information about why it is important and how to implement the change.
I'm excited to see what they have in store with the MDN Observatory 2.0 coming January 2024. For more information about that check our their news: https://developer.mozilla.org/en-US/blog/mdn-observatory/