{
  "version": "1.0.0",
  "data": {
    "http": {
      "headers": {
        "Upgrade-Insecure-Requests": {
          "__compat": {
            "basic_support": {
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": "44"
                },
                "chrome_android": {
                  "version_added": "44"
                },
                "edge": {
                  "version_added": false,
                  "notes": "<a href=\"https://developer.microsoft.com/en-us/microsoft-edge/platform/status/cspupgradeinsecurerequestsdirective\">Under consideration</a> for future release."
                },
                "edge_mobile": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "48.0"
                },
                "firefox_android": {
                  "version_added": "48.0"
                },
                "ie": {
                  "version_added": false
                },
                "ie_mobile": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "obsolete": false
              }
            }
          }
        }
      }
    }
  }
}

{
  "version": "1.0.0",
  "data": {
    "http": {
      "headers": {
        "Upgrade-Insecure-Requests": {
          "__compat": {
            "basic_support": {
              "support": {
                "webview_android": {
                  "version_added": null
                },
                "chrome": {
                  "version_added": "44"
                },
                "chrome_android": {
                  "version_added": "44"
                },
                "edge": {
                  "version_added": false,
                  "notes": "<a href=\"https://developer.microsoft.com/en-us/microsoft-edge/platform/status/cspupgradeinsecurerequestsdirective\">Under consideration</a> for future release."
                },
                "edge_mobile": {
                  "version_added": false
                },
                "firefox": {
                  "version_added": "48.0"
                },
                "firefox_android": {
                  "version_added": "48.0"
                },
                "ie": {
                  "version_added": false
                },
                "ie_mobile": {
                  "version_added": null
                },
                "opera": {
                  "version_added": "31"
                },
                "opera_android": {
                  "version_added": "31"
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "obsolete": false
              }
            }
          }
        }
      }
    }
  }
}

Add Upgrade-Insecure-Requests header support for Opera
Add Upgrade-Insecure-Requests header support for Opera
