See : http://glpi.userecho.com/topic/951400-helpdesk-paste-and-copy-screenshot-from-clipboard/

You should enable "rich content for ticket' in Configuration > General, Helpdesk tab to see that already existing feature :)
Regards

Hello,

The only supported language on this website is english.
To declare bugs and suggest features for a plugin, please use the github issue traker.

Hello,

Please describe you feature request in english.

Regards,

Hello,

Please describe you feature request in english.

Regards,

Might be solution like this one : https://github.com/Arnoud-B/csscountrycodes