Extensions and themes
Warning noteWidget and custom component support have been removed as of Qlik Sense August 2021. See Deprecation Notice – Qlik Sense Widgets and Custom Components FAQ for more information.
Extensions
Visualization extensions use the same set of technologies as standard Qlik Sense visualizations, and if developed properly, the handling of them is identical to standard visualizations.
Custom themes
Themes are used to style your Qlik Sense apps and you can create your own custom themes based on your company standards.