Reply To: Render output is brighter that the viewport in compositor window.

Hello everybody! So sorry for the late replay. I work as an Illustrator and only uses Blender in may limted spare time, thats why I have been late in my response. Thank you all for your comments!
The first image is the final render. As for compositing, I do not use any fancy tricks or anything, see the second screenshot. the settings I use for rendering is shown below. And I have forgott the denoise in the final render…. Crap… Now I do realize that I used a glare node and a hue satuartion node in may upload. That could have been the case.
 I realize that the best format is the OpenEXR, but can I use the OpenEXR in an image editor like Affinity or Photoshop? I have to try that when I get home…