Firstly, you need to search and download the "Poe2PDF " Chrome extension in the Chrome web store. After installation, visit Twitter and find the content you want to save. On the page where the content is located, click the "Poe2PDF " extension icon in the top right corner of your browser. https://poe.com/ on this site,you can save you chat content to pdf . Once done, click on the "Download PDF" button. Wait for a few moments until the PDF file is downloaded. You can find the file by clicking the "Finished" button on the browser's download progress bar and then opening it through a PDF reader.