Hey HN, this weekend I made an extension that adds ChatGPT functionality to every website. Right click in any text area, click "Ask ChatGPT", and it responds in the same text area. I've been using it to write tweets and revise copy in notion docs. The crazy part was that ChatGPT taught me how to make Chrome extensions and wrote ~60% of the code.
It's fully-open source. Link and demo in my comment below.