{
  "html": {
    "elements": {
      "base": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/base",
          "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#the-base-element",
          "tags": [
            "web-features:base"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "≤11",
              "notes": "Before Internet Explorer 7, `&lt;base&gt;` can be positioned anywhere in the document and the nearest value of `&lt;base&gt;` is used."
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "3"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "href": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-base-href",
            "tags": [
              "web-features:base"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "≤11"
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "3"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "forbid_data_javascript_urls": {
            "__compat": {
              "description": "`data:` and `javascript:` urls are not allowed",
              "tags": [
                "web-features:base"
              ],
              "support": {
                "chrome": {
                  "version_added": "58"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": "127"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "13.1"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "webview_ios": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          },
          "relative_url": {
            "__compat": {
              "description": "Relative URIs.",
              "tags": [
                "web-features:base"
              ],
              "support": {
                "chrome": {
                  "version_added": "1"
                },
                "chrome_android": "mirror",
                "edge": {
                  "version_added": "12"
                },
                "firefox": {
                  "version_added": "4"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": "≤11"
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": "3"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "webview_ios": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "target": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/semantics.html#attr-base-target",
            "tags": [
              "web-features:base"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "≤11"
              },
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "3"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}