In my PHP website I am using dot-matrix printer to print invoice bills for my costumers and use the roll paper for this. when I print using Javascript, The printer prints the contents of the bill on the paper by skipping the paper out up to A4 paper length (In my Firefox browser default print paper size is A4). But the length of the content of the bill may not be A4 length. It may less or greater than this. So in short, I need to control the paper size of the browser dynamically. The printer should stop the paper ejection on the completion of bill data. To do this I am using Js Print Setup Add-on and adjusting paper height settings of the browser for each bills through javascript library associated with this add-on. But it is not a perfect solution because in future the add-on my not be supported by firefox. The new Firefox (Firefox Quantum) not support this addon. So I am using an older version. I need a permanent solution and full control on printer settings of browser (via javascript code) like Printing device, paper size, margins, show or hide print dialog window, ect. And that should work independent of any add-ons.