I've tried to snap a simple Qt application making use of QtWebEngine (see https://github.com/grzegorzmazur/qtwebengine_snap). Building the snap according to the documentation on snapping Qt applications seems to work well, but attempt to run the application produces: Qt: Session management error: None of the authentication protocols specified are supported libpng warning: iCCP: known incorrect sRGB profile Could not find QtWebEngineProcess Aborted (core dumped) Manually setting export QTWEBENGINEPROCESS_PATH=/snap/qtwebengine-snap/current/usr/lib/x86_64-linux-gnu/qt5/libexec/QtWebEngineProcess results in Qt: Session management error: None of the authentication protocols specified are supported libpng warning: iCCP: known incorrect sRGB profile Installed Qt WebEngine locales directory not found at location /usr/share/qt5/translations/qtwebengine_locales. Trying application directory... Qt WebEngine locales directory not found at location /snap/qtwebengine-snap/x1/bin/qtwebengine_locales. Trying fallback directory... Translations MAY NOT not be correct. Path override failed for key ui::DIR_LOCALES and path '/home/mazur/snap/qtwebengine-snap/x1/.qtwebengine_snap' Qt WebEngine resources not found at /usr/share/qt5/resources. Trying parent directory... Qt WebEngine resources not found at /usr/share/qt5. Trying application directory... Qt WebEngine resources not found at /snap/qtwebengine-snap/x1/bin. Trying fallback directory... The application MAY NOT work. [0711/152354.110396:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.qtwebengine_snap/qtwebengine_resources.pak Some features may not be available. [0711/152354.119717:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.qtwebengine_snap/qtwebengine_resources_100p.pak Some features may not be available. [0711/152354.119751:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.qtwebengine_snap/qtwebengine_resources_200p.pak Some features may not be available. [0711/152354.233507:WARNING:resource_bundle_qt.cpp(115)] locale_file_path.empty() for locale [23311:23311:0711/152354.379528:FATAL:credentials.cc(155)] Check failed: NamespaceUtils::DenySetgroups(). : Permission denied #0 0x7f883de2daee <unknown> #1 0x7f883de400e2 <unknown> #2 0x7f883de4145c <unknown> #3 0x7f883e9b5b21 <unknown> #4 0x7f883e9b62dd <unknown> #5 0x7f883da4a527 <unknown> #6 0x7f883d6f5d48 <unknown> #7 0x7f883d6f9262 <unknown> #8 0x7f883d4e7a9b <unknown> #9 0x7f883d4e8bd5 <unknown> #10 0x7f883d4d7bdd <unknown> #11 0x7f883d4d7f0e QtWebEngineCore::WebContentsAdapter::WebContentsAdapter() #12 0x7f8845342091 <unknown> #13 0x7f8845342c04 QWebEnginePage::QWebEnginePage() #14 0x7f8845351cfb QWebEngineView::page() #15 0x7f8845352751 QWebEngineView::showEvent() #16 0x7f8844c6f038 QWidget::event() #17 0x7f8845352609 QWebEngineView::event() #18 0x7f8844c3082c QApplicationPrivate::notify_helper() #19 0x7f8844c380f4 QApplication::notify() #20 0x7f8843eb29a8 QCoreApplication::notifyInternal2() #21 0x7f8844c6bf08 QWidgetPrivate::show_helper() #22 0x7f8844c6ebdb QWidget::setVisible() #23 0x7f8844c6be30 QWidgetPrivate::showChildren() #24 0x7f8844c6bedf QWidgetPrivate::show_helper() #25 0x7f8844c6ebdb QWidget::setVisible() #26 0x7f8844c6be30 QWidgetPrivate::showChildren() #27 0x7f8844c6bedf QWidgetPrivate::show_helper() #28 0x7f8844c6ebdb QWidget::setVisible() #29 0x55ee0519d12d <unknown> #30 0x7f88432b7b97 __libc_start_main #31 0x55ee0519d1ea <unknown> Installed Qt WebEngine locales directory not found at location /usr/share/qt5/translations/qtwebengine_locales. Trying application directory... Qt WebEngine locales directory not found at location /snap/qtwebengine-snap/x1/usr/lib/x86_64-linux-gnu/qt5/libexec/qtwebengine_locales. Trying fallback directory... Translations MAY NOT not be correct. Path override failed for key ui::DIR_LOCALES and path '/home/mazur/snap/qtwebengine-snap/x1/.QtWebEngineProcess' Qt WebEngine resources not found at /usr/share/qt5/resources. Trying parent directory... Qt WebEngine resources not found at /usr/share/qt5. Trying application directory... Qt WebEngine resources not found at /snap/qtwebengine-snap/x1/usr/lib/x86_64-linux-gnu/qt5/libexec. Trying fallback directory... The application MAY NOT work. [0711/152354.976594:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.QtWebEngineProcess/qtwebengine_resources.pak Some features may not be available. [0711/152354.979154:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.QtWebEngineProcess/qtwebengine_resources_100p.pak Some features may not be available. [0711/152354.979172:ERROR:resource_bundle.cc(759)] Failed to load /home/mazur/snap/qtwebengine-snap/x1/.QtWebEngineProcess/qtwebengine_resources_200p.pak Some features may not be available. [0711/152354.980096:WARNING:resource_bundle_qt.cpp(115)] locale_file_path.empty() for locale [23190:23190:0711/152355.520588:FATAL:service_manager_context.cc(230)] Check failed: !contents.empty(). #0 0x7f883de2daee <unknown> #1 0x7f883de400e2 <unknown> #2 0x7f883d97d5bb <unknown> #3 0x7f883d6f69cb <unknown> #4 0x7f883d6f7e83 <unknown> #5 0x7f883da0a9e9 <unknown> #6 0x7f883d6f401b <unknown> #7 0x7f883d6f92dc <unknown> #8 0x7f883d4e7a9b <unknown> #9 0x7f883d4e8bd5 <unknown> #10 0x7f883d4d7bdd <unknown> #11 0x7f883d4d7f0e QtWebEngineCore::WebContentsAdapter::WebContentsAdapter() #12 0x7f8845342091 <unknown> #13 0x7f8845342c04 QWebEnginePage::QWebEnginePage() #14 0x7f8845351cfb QWebEngineView::page() #15 0x7f8845352751 QWebEngineView::showEvent() #16 0x7f8844c6f038 QWidget::event() #17 0x7f8845352609 QWebEngineView::event() #18 0x7f8844c3082c QApplicationPrivate::notify_helper() #19 0x7f8844c380f4 QApplication::notify() #20 0x7f8843eb29a8 QCoreApplication::notifyInternal2() #21 0x7f8844c6bf08 QWidgetPrivate::show_helper() #22 0x7f8844c6ebdb QWidget::setVisible() #23 0x7f8844c6be30 QWidgetPrivate::showChildren() #24 0x7f8844c6bedf QWidgetPrivate::show_helper() #25 0x7f8844c6ebdb QWidget::setVisible() #26 0x7f8844c6be30 QWidgetPrivate::showChildren() #27 0x7f8844c6bedf QWidgetPrivate::show_helper() #28 0x7f8844c6ebdb QWidget::setVisible() #29 0x55ee0519d12d <unknown> #30 0x7f88432b7b97 __libc_start_main #31 0x55ee0519d1ea <unknown> Aborted (core dumped) All in all, there seems to be no (documented?) way of snapping an application using QtWebEngine.