-Vimium (install and hit the letter 'f' key. You will immediately understand the appeal if you are a keyboard jockey)
-A Userscript handler (Violentmonkey)
-Dark Reader
-Save to Pocket (I have a Kobo ereader, this extension is a must for reading on the go)
-Bitwarden
-Ublock if the browser doesn't have baked in Ad blocks.
I love reading the responses to this question.
This comment needs to be upvoted to the top.