title: PDF in IFrame doesn't work in Chrome and Safari
body: <p>I'm using a HTML-form which target is an iframe. In this frame a PDF is generated (using TCPDF) out of the given data and should be displayed within the iframe. The problem is, that in webkit browsers like Chrome or Safari with built-in PDF viewers the PDF isn't displayed. Instead, a very dark gray background is displayed - at least sometimes. In some cases which I could not figure out it works. When I use Firefox with Acrobat it works, too. So the PDF can't corrupt.
  Unfortunately, I can't deliver an example for my problem, but did anybody have those problems, too, and can help me?</p>
  
  <p>Thx.</p>