If you're presenting your slides online, you need to optimize them for the best performance and user experience. This means reducing the file size and loading time of your slides, ensuring that your slides are compatible with the online platform you're using, and enhancing the interactivity and engagement of your slides. You can reduce the file size and loading time of your slides by compressing your images, removing unnecessary animations and transitions, and saving your slides in a web-friendly format, such as PDF or HTML. You can ensure compatibility by checking the supported formats and features of the online platform you're using, such as Zoom, Webex, or Teams, and avoiding any elements that may not work well, such as fonts, videos, or hyperlinks. You can enhance interactivity and engagement by adding polls, quizzes, or Q&A sessions to your slides, using online tools, such as Mentimeter, Slido, or Kahoot.