Is the jado Flex a WYSIWYG editor?

The honest answer here is “no”!

We have built-in WordPress internal things that you can easily activate in the jFT settings, so you can see the correct fonts in the backend, the colors, etc. But font sizes are often calculated dynamically, so it is not a pure WYSIWYG editor.

In the customizer under the “Design” section, however, you can simulate various previews for various “Viewport” (views on end devices) in order to get a very good impression of your company websites!