Thanks for the example. It made me realize that the while loop is somehow causing the memory of the process to grow by the size of each image. In this version the memory grows and shrinks according to the image size, with no need for delete: 
#!/usr/bin/perl

=head1 DESCRIPTION

View random images from the supplied folder (supports . and ~).
Every time you close an image a new random image will open,
until the program is stopped.

Inspired by "Re^2: Tk show image from web" by IB2017
https://www.perlmonks.org/index.pl?node_id=11108799

=cut

use strict;
use warnings;
use autodie;

use Encode;
use File::Spec;
use MIME::Base64;

use Image::Info;
use Imager;

use Tk;
use Tk::Photo;
use Tk::JPEG;
use Tk::PNG;

my $dir = shift ||
die "Usage: $0 /path/to/images";
die 'Folder not found :-(' unless -d $dir;

my $img = shift; # an initial image, for debugging

opendir my $dh, glob $dir;
my @img = grep /\.(jpe?g|gif|png|bmp)/i, readdir $dh;
closedir $dh;

die 'No images found, try again!' unless @img;

my $file = $img || $img[rand@img];
my $path = File::Spec->catfile($dir,$file);

if (Image::Info::image_type($path)->{file_type} eq 'JPEG') {
    
  my $info = Image::Info::image_info($path);
    
  if ($info->{color_type} eq 'CMYK') {
    
    my $tmpdir = File::Spec->tmpdir;
    my $imager = Imager->new;
    
    $imager->read(file=>$path)
    or die $imager->errstr;
    
    $path = File::Spec->catfile($tmpdir,$file);
    
    # Converts CMYK to RGB
    $imager->write(file=>$path)
    or die $imager->errstr
  }
}
open my $fh, '<', $path;
my $data = join '', <$fh>;
close $fh;

$data = MIME::Base64::encode_base64($data);

my $mw = MainWindow->new;
   $mw->configure(-title => Encode::decode_utf8($file));

my $top   = $mw->Frame()->pack();
my $image = $mw->Photo(-data => $data);
my $label = $top->Label(-image => $image)->pack();

print $path, "\n", $image->width, 'x', $image->height, "\n\n";

MainLoop;

exec 'perl', $0, $dir;

[download]

In reply to Re^2: Tk::Image delete method by Anonymous Monk
in thread Tk::Image delete method by Anonymous Monk

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