title: How To Highlight The Text In PDF Files Through Chrome Extension
body: <p>I am new to programming. I am creating a Chrome extension, which is when clicked shows a pop-up with many categories with check boxes. If you click the checkbox, the extension will interact with web page and highlight text related to selected categories. </p>
  
  <p>Now my question is how to highlight the text in pdf files when I am clicking the popup page checkbox. Or how to interact with the pdf files from Chrome extension. Please help me.</p>