How to modify HTTP response headers for website in Plesk?

Julian Bonpland Mignaquy

Updated January 13, 2026 19:11

kb: how-to Plesk for Linux ABT: Group A

Applicable to:

Plesk for Linux

Question

How to modify website HTTP response headers via Apache?

Answer

if nginx is enabled

Go to Domains > example.com > Apache & nginx Settings
In 'Common Apache settings' > Additional headers, select 'Enter custom value' and add the headers:

There are should not be any "location headers" directives at additional nginx directives

if nginx is disabled

Navigate to Subscriptions > example.com > Apache & nginx Settings > Additional Apache directives
In Additional directives for HTTP and Additional directives for HTTPS,

append information to any existing header of the same name, for example:

PLESK_INFO: RequestHeader append MirrorID "mirror 12"

add a new header, for example:

PLESK_INFO: Header set Set-Cookie testcookie "expr=-z %{req:Cookie}"

or disable the header, for example:

PLESK_INFO: RequestHeader unset MirrorID
Click OK to apply the changes.

Additional information

HTTP response headers are defined by the Apache module "mod_headers", which is installed with Plesk by default. For more information refer to Apache documentation.

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