qtwebengine5-dev-tools 5.9.3+dfsg-0ubuntu2 (amd64 binary) in ubuntu bionic

 Qt is a cross-platform C++ application framework. Qt's primary feature
 is its rich set of widgets that provide standard GUI functionality.
 .
 This package contains qwebengine_convert_dict tool which converts hunspell
 'dic' dictionaries to binary 'bdic' format, which is required by spellchecker
 in Qt WebEngine.