G'day djlerman,

It would be useful if you supplied some simple code demonstrating the generation of these errors. Also, please let us know the version of PDF::API2 that you are using; other similar information, such as Perl version and OS may be helpful.

I had a look at the source: https://metacpan.org/release/SSIMMS/PDF-API2-2.042/source/lib/PDF/API2/Resource/XObject/Image/PNG.pm. The line numbers you show don't seem to fit the messages (so you're probably not using the latest 2.042 version).

I did note at lines 84-89:

# BPC = bits per component, and may be 1, 2, 4, 8, or 16 per the PNG s
+pec.
# Color types may further restrict the available options.  Additionall
+y,
# this module doesn't currently support 16-bit components.
if ($bpc == 16) {
    die '16-bit colors/transparency are not supported.';
}
[download]

That was the only thing that matched a search for "not supported". Have a look around your own version of the source code: searching for "not supported" or "Unsupported" may shed some light on the problem.

Thank You Ken. :-)

PDF::API2 -- 2.021
perl -- v5.10.1 (*) built for x86_64-linux-thread-multi
os -- CentOS release 6.5


Here is code:

  use PDF::API2;
  
  use constant mm => 25.4 / 72;
  use constant in => 1 / 72;
  use constant pt => 1;

  # Create a blank PDF file
  my $pdf = PDF::API2->new();

  # Add a blank page
  my $page = $pdf->page();

  # Set the page size
  $page->mediabox('Letter');
  
  $pdf->info(
    'Author'=>'COPA',
    'Title'=>'perl PDF API2 Test',
  );
  

  $imageFile  = "/home/images/test.png";
  $img        = $pdf->image_png($imageFile);
  
  
  $image      = $page->gfx;
  $image->image($img, 0/mm, 100/mm);


  # print output
  $http_headers_out{'Content-Disposition'}  = "inline; filename=pdfTes
+t.pdf";
  $http_headers_out{'Content-type'}         = "application/pdf";
  
  $escmode = 0;
  print OUT $pdf->stringify;
  
  $pdf->end;
[download]

I was able to get it working by using GD to handle the image:

use GD;
# ...

my $imageFile = "image-24bit-interlaced.png";
my $gdimg     = GD::Image->new($imageFile);
my $img       = $pdf->image_gd($gdimg);

my $image     = $page->gfx;
$image->image($img, 0/mm, 100/mm);
[download]

libpng warning: Interlace handling should be turned on when using png_read_image

PS the module version you are using is very old - if you are planning to use it more you should update to the latest version. If you do you will need to update a few lines of your code also.

Everything involved here is very old. Going by the info from elsewhere in the thread this is running on Centos 6 (edit and even an extremely ancient version of that, 6.5 rather than the "latest" 6.10) which went EOL just shy of a year ago (see here). OP would be much better served getting onto a newer platform and trying to get things working there rather than attempting to work around decade-ish old bugs.

The cake is a lie.
The cake is a lie.
The cake is a lie.