To install HTML::WidgetValidator::Widget::PixivEmbedFeature, copy and paste the appropriate command in to your terminal.
cpanm
cpanm HTML::WidgetValidator::Widget::PixivEmbedFeature
CPAN shell
perl -MCPAN -e shell
install HTML::WidgetValidator::Widget::PixivEmbedFeature
For more information on module installation, please visit the detailed CPAN module installation guide.