{
  "css": {
    "properties": {
      "content": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/content",
          "spec_url": "https://drafts.csswg.org/css-content/#content-property",
          "tags": [
            "web-features:content"
          ],
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "8"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "4"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "alt_text": {
          "__compat": {
            "description": "Alternative text after `/`",
            "tags": [
              "web-features:alt-text-generated-content"
            ],
            "support": {
              "chrome": {
                "version_added": "77"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "128"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "17.4"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "counters": {
            "__compat": {
              "description": "`counter()` and `counters()` in alternative text",
              "tags": [
                "web-features:alt-text-generated-content"
              ],
              "support": {
                "chrome": [
                  {
                    "version_added": "preview"
                  },
                  {
                    "version_added": "140",
                    "partial_implementation": true,
                    "notes": "Counters are recognised, but the spoken values do not increment"
                  }
                ],
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": false
                },
                "firefox_android": "mirror",
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": false
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "webview_ios": "mirror"
              },
              "status": {
                "experimental": true,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "close-quote": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-close-quote",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "element_replacement": {
          "__compat": {
            "description": "Element replacement",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "28"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "63"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": {
                "version_added": "7"
              },
              "opera_android": {
                "version_added": "10.1"
              },
              "safari": {
                "version_added": "9"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "gradient": {
          "__compat": {
            "description": "`<gradient>`",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Values/gradient",
            "spec_url": "https://drafts.csswg.org/css-images-4/#gradients",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "26"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "113",
                "partial_implementation": true,
                "notes": "`content: <gradient>` doesn't paint on ::before/::after pseudo elements. See [bug 1832901](https://bugzil.la/1832901)."
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "7"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "image-set": {
          "__compat": {
            "description": "`image-set()`",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Values/image/image-set",
            "spec_url": "https://drafts.csswg.org/css-images-4/#image-set-notation",
            "tags": [
              "web-features:image-set"
            ],
            "support": {
              "chrome": [
                {
                  "version_added": "113"
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "113"
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "20",
                  "version_removed": "113",
                  "partial_implementation": true,
                  "notes": "Support for `url` images only and `x` is the only supported resolution unit."
                }
              ],
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": [
                {
                  "version_added": "89"
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "90"
                },
                {
                  "version_added": "88",
                  "version_removed": "89",
                  "partial_implementation": true,
                  "notes": "The `type()` function is not supported as an argument to `image-set()`."
                }
              ],
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": [
                {
                  "version_added": "17"
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "17"
                },
                {
                  "version_added": "14",
                  "version_removed": "17",
                  "partial_implementation": true,
                  "notes": "The `type()` function is not supported as an argument to `image-set()`."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "14",
                  "version_removed": "17",
                  "partial_implementation": true,
                  "notes": "The `type()` function is not supported as an argument to `image-set()`."
                },
                {
                  "version_added": "10.1",
                  "version_removed": "14",
                  "partial_implementation": true,
                  "notes": "Support for `url` images only and `x` is the only supported resolution unit."
                },
                {
                  "prefix": "-webkit-",
                  "version_added": "6",
                  "version_removed": "14",
                  "partial_implementation": true,
                  "notes": "Support for `url` images only and `x` is the only supported resolution unit."
                }
              ],
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "no-close-quote": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-no-close-quote",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "no-open-quote": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-no-open-quote",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "none": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-none",
            "tags": [
              "web-features:content"
            ],
            "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": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "none_applies_to_elements": {
          "__compat": {
            "description": "`content: none` for elements",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": "91",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.element-content-none.enabled"
                  }
                ]
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": false
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "normal": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-normal",
            "tags": [
              "web-features:content"
            ],
            "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": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "open-quote": {
          "__compat": {
            "spec_url": "https://drafts.csswg.org/css-content/#valdef-content-open-quote",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "oculus": "mirror",
              "opera": "mirror",
              "opera_android": "mirror",
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "url": {
          "__compat": {
            "description": "`url()`",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Values/url_function",
            "spec_url": "https://drafts.csswg.org/css-values/#urls",
            "tags": [
              "web-features:content"
            ],
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "1"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "8"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "7"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "1"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": {
                "version_added": "37"
              },
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}