Is there a way to set the DPI of output pdf using FPDF library?

fpdf, php

Solution

As far as I know, PDF documents do not have DPI settings, given that they are vector objects. I assume you actually refer to embedded raster images (JPEG, GIF...). In that case, just check the documentation for the Image() function: forth and fifth parameters (`$w` and `$h`) can express the desired DPI if you write a negative value:

// Insert a logo in the top-left corner at 300 dpi
$pdf->Image('logo.png',10,10,-300);

Problem

Original source