Looking at the referred post and taking a look at the class-Category-Images-II.php file I think that the problem resides in how the plugin generates the thumbnail image:
protected function save_thumb( $original_file, $thumb_file )
{
// Scale the image.
list( $w, $h, $format ) = getimagesize( $original_file );
$max_side = $this->get_max_side();
$xratio = $max_side / $w;
$yratio = $max_side / $h;
$ratio = min( $xratio, $yratio );
$targetw = (int) $w * $ratio;
$targeth = (int) $h * $ratio;
$src_gd = $this->image_create_from_file( $original_file );
assert( $src_gd );
$target_gd = imagecreatetruecolor( $targetw, $targeth );
imagecopyresampled ( $target_gd, $src_gd, 0, 0, 0, 0, $targetw, $targeth, $w, $h );
// create the initial copy from the original file
// also overwrite the filename (in case the extension isn't accurate)
$success = false;
if ( $format == IMAGETYPE_GIF ) {
$success = imagegif( $target_gd, $thumb_file );
} elseif ( $format == IMAGETYPE_JPEG ) {
$success = imagejpeg( $target_gd, $thumb_file, 90 );
} elseif ( $format == IMAGETYPE_PNG ) {
$success = imagepng( $target_gd, $thumb_file );
} else {
wp_die( __( 'Unknown image type. Please upload a JPEG, GIF or PNG.', 'category-images-ii' ) );
}
if ( ! $success )
wp_die( __( 'Image resizing failed.', 'category-images-ii' ) );
}
Unfortunately, I’m not a code master to try to fix it. Any solve?
ps: sorry for my english
