# ----------------------------------------------------------------------
# | Permissions Policy                                                 |
# ----------------------------------------------------------------------

# Set a strict Permissions Policy to mitigate access to browser features.
#
# The header uses a structured syntax, and allows sites to more tightly
# restrict which origins can be granted access to features.
# The list of available features: https://github.com/w3c/webappsec-permissions-policy/blob/main/features.md
#
# The example policy below aims to disable all features expect synchronous
# `XMLHttpRequest` requests on the same origin.
#
# To check your Permissions Policy, you can use an online service, such as:
# https://securityheaders.com/
# https://observatory.mozilla.org/
#
# https://www.w3.org/TR/permissions-policy-1/
# https://owasp.org/www-project-secure-headers/#permissions-policy
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Feature-Policy
# https://scotthelme.co.uk/a-new-security-header-feature-policy/

add_header Permissions-Policy $permissions_policy always;