Re^2: Downloading KeyForge image

Thank you for your answers. I just figured out how to save the image (with binmode). But it was only for debugging. The real purpose is to display it in Tk. And still can't make it to work. Here is the whole program:

use 5.010;
use strict;
use warnings;

use LWP::UserAgent;
use Tk;
use Tk::PNG;

my $url = "https://cdn.keyforgegame.com/media/card_front/en/341_1_7C85
+4VPW72RH_en.png";

my $ua = LWP::UserAgent->new(agent => '');
my $response = $ua->get($url);
die $response->status_line if not $response->is_success;
my $data = $response->decoded_content(charset => 'none');

my $mw = MainWindow->new;
$mw->Photo(-data => $data, -format => 'PNG');
[download]

I have the error 'couldn't recognize image data at ...../perl/vendor/lib/Tk/Image.pm line 21'. Why is that?

Comment on Re^2: Downloading KeyForge image Download Code

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Re^3: Downloading KeyForge image by poj (Abbot) on May 21, 2019 at 20:43 UTC
Seems to only work if you base64 encode the binary `use 5.010; use strict; use warnings; use LWP::UserAgent; use Tk; use Tk::PNG; use MIME::Base64; my $url = 'http://www.perl.com/images/ads/tpcip_banner-1200x150.png'; my $ua = LWP::UserAgent->new(agent => ''); my $response = $ua->get($url); die $response->status_line if not $response->is_success; my $data = MIME::Base64::encode_base64($response->decoded_content()); my $mw = MainWindow->new; my $photo = $mw->Photo(-data => $data, -format => 'PNG'); $mw->Label(-image => $photo)->pack(); MainLoop;` [download] poj	[reply] [d/l]
Re^4: Downloading KeyForge image by Stamm (Sexton) on May 21, 2019 at 21:07 UTC
Thank you! Yes it works with Base64. It's weird, the doc says it accepts binary in addition to Base64. Thanks again.	[reply]
Re^5: Downloading KeyForge image by poj (Abbot) on May 21, 2019 at 21:15 UTC
There is an old thread from 2006 about it here poj	[reply]
Re^3: Downloading KeyForge image by afoken (Chancellor) on May 21, 2019 at 20:00 UTC
Are you sure the image is a PNG? Just because a URL ends in `.png`, the file does not have to be a PNG. Browsers and image viewers generally accept anything that roughly looks like an image, more or less ignoring file extensions, URL parts, and MIME types. Check the first few bytes: They should be 0x89 0x50 0x4E 0x47 0x0D 0x0A 0x1A 0x0A, according to both Portable_Network_Graphics and http://www.libpng.org/pub/png/spec/1.2/PNG-Contents.html. Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l]