I tested it in both gemini and chatgpt. It works perfectly! You can export to word, pdf and other formats I haven't tried. The visual disposition of the text is not lost (like when you try to copy and paste the entire page), even the tables and code chunks stay in a beautiful format. You can also choose to export your messages only, the bot messages only, or the whole convo. Do make sure to load big convos all the way to the top (by scrolling) before using the extension. To use, click the extension button, and select "load chat". In gemini, it automatically expands messages that were shortened.