Print page numbers on pages when printing html

This javascript will add absolute positioned div's with pagenumbers on the right bottom corner and works in all browsers.

A4 height = 297mm = 1123px(96dpi)

<html>
    <head>
        <style type="text/css">
            @page {
              size: A4;
              margin: 0; 
            }

            body {
              margin: 0;
            }
        </style>
    </head>
    <body>
        <script type="text/javascript">
          window.onload = addPageNumbers;

          function addPageNumbers() {
            var totalPages = Math.ceil(document.body.scrollHeight / 1123);  //842px A4 pageheight for 72dpi, 1123px A4 pageheight for 96dpi, 
            for (var i = 1; i <= totalPages; i++) {
              var pageNumberDiv = document.createElement("div");
              var pageNumber = document.createTextNode("Page " + i + " of " + totalPages);
              pageNumberDiv.style.position = "absolute";
              pageNumberDiv.style.top = "calc((" + i + " * (297mm - 0.5px)) - 40px)"; //297mm A4 pageheight; 0,5px unknown needed necessary correction value; additional wanted 40px margin from bottom(own element height included)
              pageNumberDiv.style.height = "16px";
              pageNumberDiv.appendChild(pageNumber);
              document.body.insertBefore(pageNumberDiv, document.getElementById("content"));
              pageNumberDiv.style.left = "calc(100% - (" + pageNumberDiv.offsetWidth + "px + 20px))";
            }
          }
        </script>
        <div id="content">
            Lorem ipsum....
        </div>
    </body>
</html>

As @page with pagenumbers don't work in browsers for now I was looking for alternatives.
I've found an answer posted by Oliver Kohll.
I'll repost it here so everyone could find it more easily:
For this answer we are not using @page, which is a pure CSS answer, but work in FireFox 20+ versions. Here is the link of an example.
The CSS is:

#content {
    display: table;
}

#pageFooter {
    display: table-footer-group;
}

#pageFooter:after {
    counter-increment: page;
    content: counter(page);
}

And the HTML code is:

<div id="content">
  <div id="pageFooter">Page </div>
  multi-page content here...
</div>

This way you can customize your page number by editing parametrs to #pageFooter. My example:

#pageFooter:after {
    counter-increment: page;
    content:"Page " counter(page);
    left: 0; 
    top: 100%;
    white-space: nowrap; 
    z-index: 20;
    -moz-border-radius: 5px; 
    -moz-box-shadow: 0px 0px 4px #222;  
    background-image: -moz-linear-gradient(top, #eeeeee, #cccccc);  
  }

This trick worked for me fine. Hope it will help you.


Try to use https://www.pagedjs.org/. It polyfills page counter, header-/footer-functionality for all major browsers.

@page {
  @bottom-left {
    content: counter(page) ' of ' counter(pages);
  }
}

It's so much more comfortable compared to alternatives like PrinceXML, Antennahouse, WeasyPrince, PDFReactor, etc ...

And it is totally free! No pricing or whatever. It really saved my life!