title: show pdf files in a php page
body: <p>I have some pdf files and want to show them online in my website,not downloading or displaying with acrobat or firefox add-on, actullay I need a pdf viewer. I am not sure if there ia any prepared library or plugin. I guess I have to convert each page of pdf to an image file,but how can I do it?</p>
  
  <p>thank you.</p>