Paste your file in (png) format into <user>\Documents\Qlik\Sense\Content\Default\Images
and remember the file name and check in Text&Image object.
Before pasting the image please check the size should be appropriate. No option to change the size of image after inserting in sense.
Hi Daniel and thanks for your answer,
I created my content libraries and the access rights in the QMC but when I want insert an image in a text object (in Edition mode) I only find the default repository...
you need to upload your image files from the qmc.
Pasting your file in C:\ProgramData\Qlik\Sense\Repository\Content\Default in useless.
and then you get your image available on the developement side :