Greasy Fork镜像 is available in English.
Copy the chatGPT Q&A content as a markdown text, with MathJax Render Support, you can use this together with 'OpenAI-ChatGPT LaTeX Auto Render (with MathJax V2)' that adds support for math render, based on 'chatGPT Markdown' by 赵巍໖.
< Feedback on ChatGPT Copy as Markdown with MathJax Support
Doesn't seem to work any more, even when fixing the URL to match for /c/ rather than /chat/