Permissions Policy
Permissions Policy provides mechanisms for web developers to explicitly declare what functionality can and cannot be used on a web site. You define a set of "policies" that restrict what APIs the site's code can access or modify the browser's default behavior for certain features.
Usage
This header is enabled by default but you can change its behavior like following.
export default defineNuxtConfig({
// Global
security: {
headers: {
permissionsPolicy: <OPTIONS>,
},
},
// Per route
routeRules: {
'/custom-route': {
security: {
headers: {
permissionsPolicy: <OPTIONS>,
},
},
}
}
})
You can also disable this header by setting permissionsPolicy: false. To disable certain API completely, set its value to empty array like:
export default defineNuxtConfig({
security: {
headers: {
permissionsPolicy: {
'camera': [] // This will block usage of camera by this website
},
},
},
})
Default value
By default, Nuxt Security will set the following value for this header:
Permissions-Policy: camera=(), display-capture=(), fullscreen=(), geolocation=(), microphone=()
Available values
The permissionsPolicy header can be configured with following values.
permissionsPolicy: {
'camera'?: string[] | string;
'display-capture'?: string[] | string;
'fullscreen'?: string[] | string;
'geolocation'?: string[] | string;
'microphone'?: string[] | string;
'web-share'?: string[] | string;
} | false
And several 🧪 Experimental API's.
type PermissionsPolicyValue = {
'accelerometer'?: string[] | string;
'ambient-light-sensor'?: string[] | string;
'autoplay'?: string[] | string;
'battery'?: string[] | string;
'document-domain'?: string[] | string;
'encrypted-media'?: string[] | string;
'execution-while-not-rendered'?: string[] | string;
'execution-while-out-of-viewport'?: string[] | string;
'gamepad'?: string[] | string;
'gyroscope'?: string[] | string;
'hid'?: string[] | string;
'idle-detection'?: string[] | string;
'local-fonts'?: string[] | string;
'magnetometer'?: string[] | string;
'midi'?: string[] | string;
'payment'?: string[] | string;
'picture-in-picture'?: string[] | string;
'publickey-credentials-get'?: string[] | string;
'screen-wake-lock'?: string[] | string;
'serial'?: string[] | string;
'speaker-selection'?: string[] | string;
'usb'?: string[] | string;
'xr-spatial-tracking'?: string[] | string;
}
Per-route configuration
All Permissions Policy options can be defined on a per-route level.
As examplified below, rules are merged recursively when resolved :
export default defineNuxtConfig({
// Global
security: {
headers: {
permissionsPolicy: {
'geolocation': [] // By default, geolocation disabled
}
}
}
// Per route
routeRules: {
'/some-prefix/**': {
security: {
headers: {
permissionsPolicy: {
'geolocation': ['self'] // Self origin allowed for geolocation on all routes beginning with /some-prefix/
}
}
}
},
'/some-prefix/some-route/**': {
security: {
headers: {
permissionsPolicy: {
'geolocation': ['self', 'https://*.example.com'] // Self AND *.example.com allowed for routes beginning with /some-prefix/some-route/
}
}
}
},
'/some-prefix/some-route/some-page': {
security: {
headers: {
contentSecurityPolicy: {
'geolocation': ['self'] // ONLY self allowed on /some-prefix/some-route/some-page
}
}
}
}
}
})