{
  "title": "JSON schema for Web Application manifest files",
  "$schema": "http://json-schema.org/draft-04/schema#",

  "type": "object",

  "properties": {
    "background_color": {
      "description": "The background_color member describes the expected background color of the web application.",
      "type": "string"
    },
    "categories": {
      "description": "Describes the expected application categories to which the web application belongs.",
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "description": {
      "description": "Description of the purpose of the web application",
      "type": "string"
    },
    "dir": {
      "description": "The base direction of the manifest.",
      "enum": [ "ltr", "rtl", "auto" ],
      "default": "auto"
    },
    "display": {
      "description": "The item represents the developer's preferred display mode for the web application.",
      "enum": [ "fullscreen", "standalone", "minimal-ui", "browser" ],
      "default": "browser"
    },
    "iarc_rating_id": {
      "description": "Represents an ID value of the IARC rating of the web application. It is intended to be used to determine which ages the web application is appropriate for.",
      "type": "string"
    },
    "icons": {
      "description": "The icons member is an array of icon objects that can serve as iconic representations of the web application in various contexts.",
      "type": "array",
      "items": {
        "$ref": "#/definitions/image"
      }
    },
    "lang": {
      "description": "The primary language for the values of the manifest.",
      "type": "string"
    },
    "name": {
      "description": "The name of the web application.",
      "type": "string"
    },
    "orientation": {
      "description": "The orientation member is a string that serves as the default orientation for all  top-level browsing contexts of the web application.",
      "enum": [ "any", "natural", "landscape", "portrait", "portrait-primary", "portrait-secondary", "landscape-primary", "landscape-secondary" ]
    },
    "prefer_related_applications": {
      "description": "Boolean value that is used as a hint for the user agent to say that related applications should be preferred over the web application.",
      "type": "boolean"
    },
    "related_applications": {
      "description": "Array of application accessible to the underlying application platform that has a relationship with the web application.",
      "type": "array",
      "items": {
        "$ref": "#/definitions/related_application"
      }
    },
    "scope": {
      "description": "A string that represents the navigation scope of this web application's application context.",
      "type": "string"
    },
    "screenshots": {
      "description": "The screenshots member is an array of image objects represent the web application in common usage scenarios.",
      "type": "array",
      "items": {
        "$ref": "#/definitions/image"
      }
    },
    "serviceworker": {
      "description": "The service worker of the web application.",
      "type": "object",
      "properties": {
        "src": {
          "description": "URL representing a service worker.",
          "type": "string"
        },
        "scope": {
          "description": "The service worker's associated scope URL.",
          "type": "string"
        },
        "type": {
          "description": "The service worker's worker type.",
          "type": "string"
        },
        "use_cache": {
          "description": "Determines whether the user agent cache should be used when fetching the service worker.",
          "type": "boolean"
        }
      }
    },
    "short_name": {
      "description": "A string that represents a short version of the name of the web application.",
      "type": "string"
    },
    "start_url": {
      "description": "Represents the URL that the developer would prefer the user agent load when the user launches the web application.",
      "type": "string"
    },
    "theme_color": {
      "description": "The theme_color member serves as the default theme color for an application context.",
      "type": "string"
    }
  },
  "required": [ "name", "icons" ],
  "definitions": {
    "image": {
      "type": "object",
      "properties": {
        "sizes": {
          "description": "The sizes member is a string consisting of an unordered set of unique space-separated tokens which are ASCII case-insensitive that represents the dimensions of an image for visual media.",
          "oneOf": [
            {
              "type": "string",
              "pattern": "^[0-9 x]+$"
            },
            {
              "enum": [ "any" ]
            }
          ]
        },
        "src": {
          "description": "The src member of an image is a URL from which a user agent can fetch the icon's data.",
          "type": "string"
        },
        "type": {
          "description": "The type member of an image is a hint as to the media type of the image.",
          "type": "string",
          "pattern": "^[\\sa-z0-9\\-+;\\.=\\/]+$"
        },
        "purpose": {
          "type": "string",
          "enum": [ "badge", "maskable", "any" ],
          "default": "any"
        },
        "platform": {
          "$ref": "#/definitions/platform"
        }
      }
    },
    "related_application": {
      "type": "object",
      "properties": {
        "platform": {
          "$ref": "#/definitions/platform"
        },
        "url": {
          "description": "The URL where the application can be found.",
          "type": "string",
          "format": "uri"
        },
        "id": {
          "description": "Information additional to the URL or instead of the URL, depending on the platform.",
          "type": "string"
        },
        "min_version": {
          "description": "Information about the minimum version of an application related to this web app.",
          "type": "string"
        },
        "fingerprints": {
          "description": "An array of fingerprint objects used for verifying the application.",
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "type": {
                "type": "string"
              },
              "value": {
                "type": "string"
              }
            }
          }
        }
      }
    },
    "platform": {
      "description": "The platform it is associated to.",
      "enum": [ "play", "itunes", "windows" ]
    }
  }
}