Here are some screenshots taken directly from the browser. To get a better idea of what it's like, you can test the wiki in its own demo environment without having to install anything:
https://demo.purewiki.org/

The Main Dashboard

The default PureWiki Dashboard
The default PureWiki Dashboard

 

The light version of the PureWiki Dashboard
The light version of the PureWiki Dashboard

 

Media Manager to upload, manage and edit asset files
Media Manager to upload, manage and edit asset files

The WYSIWYG Editor in PureWiki

The WYSIWYG Editor of PureWiki, based on Editor.JS
The WYSIWYG Editor of PureWiki, based on Editor.JS

 

...and the light version as well
...and the light version as well

Settings

Page-Specific Settings
Page-Specific Settings

 

Global Wiki Settings
Global Wiki Settings