How to add custom response header to every page?

[Serpent_Driver]

Hi all,

I am new with Magento and found no information about how to add a simple response header to every page. Can anybody help me where and how it has to be done?

Thank you

[Meetanshi]

Hello @Serpent_Driver 

Please refer "How to Add Block’s Class Name Dynamically into Layout.xml File in Magento 2 "

Customize the path for custom.phtml file as per your requirement.

Hope it helps.

[Serpent_Driver]

Sorry, that doesn't helps me. I don't want to develop anything. I only need a simple but specific response header to every page like

header("header_name: header_value");

Is there no simple way to add a header?