Hi Sterrence, The shortest route that I can think of is - 3-bar Menu -> Add-ons select Extensions on the left click on the desired add-on to expand scroll down and there should be a link to their Homepage.

I have found that many of my addons do not include such a link. Is there any other way that doesn't rely on whatever is missing from those?

If there is no Homepage, there should be an Author link which will take you to the AMO page.

Some include an author name, but that doesn't link to anything, and some, such as Enhancer for Youtube, don't even include that.

From the AMO page:

Enhancer for YouTube

Homepage: https://www.mrfdev.com/enhancer-for-youtube Support site: https://www.mrfdev.com/how-to-use-enhancer-for-youtube Support Email: webmaster@mrfdev.com

You might consider creating bookmarks and a folder.

Noted, but that's not really what I'm looking for. I'm looking for a surefire way to get to any addon's page, from the list of installed addons.

The only other shortcut that I can find is to right-click on the extensions' icon on the toolbar and select Manage Extension. This will take you to the about:addons page with the extension expanded. Of course, that would only be helpful for extensions which are enabled and appear on the toolbar. Keep in mind that, unless they are created by Mozilla, extensions are 3rd party software. Apparently, it's up to them to include links on their Details page or their AMO page.