diff --git a/api/CSSImportRule.json b/api/CSSImportRule.json
index 2750ca87e64eda..f1ef576fa56c79 100644
--- a/api/CSSImportRule.json
+++ b/api/CSSImportRule.json
@@ -202,8 +202,7 @@
           "spec_url": "https://drafts.csswg.org/cssom/#dom-cssimportrule-supportstext",
           "support": {
             "chrome": {
-              "version_added": false,
-              "impl_url": "https://crbug.com/1380321"
+              "version_added": "121"
             },
             "chrome_android": "mirror",
             "edge": {
@@ -217,12 +216,8 @@
               "version_added": false
             },
             "oculus": "mirror",
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
+            "opera": "mirror",
+            "opera_android": "mirror",
             "safari": {
               "version_added": false,
               "impl_url": "https://webkit.org/b/256180"
@@ -232,7 +227,7 @@
             "webview_android": "mirror"
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
diff --git a/api/CharacterBoundsUpdateEvent.json b/api/CharacterBoundsUpdateEvent.json
new file mode 100644
index 00000000000000..db5edfddef35b3
--- /dev/null
+++ b/api/CharacterBoundsUpdateEvent.json
@@ -0,0 +1,157 @@
+{
+  "api": {
+    "CharacterBoundsUpdateEvent": {
+      "__compat": {
+        "spec_url": "https://w3c.github.io/edit-context/#dom-characterboundsupdateevent",
+        "tags": [
+          "web-features:edit-context"
+        ],
+        "support": {
+          "chrome": {
+            "version_added": "121"
+          },
+          "chrome_android": {
+            "version_added": false
+          },
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "CharacterBoundsUpdateEvent": {
+        "__compat": {
+          "description": "<code>CharacterBoundsUpdateEvent()</code> constructor",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-characterboundsupdateevent-constructor",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "rangeEnd": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-characterboundsupdateevent-rangestart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "rangeStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-characterboundsupdateevent-rangestart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/ClipboardItem.json b/api/ClipboardItem.json
index f53ac3de06747b..90b22257624f88 100644
--- a/api/ClipboardItem.json
+++ b/api/ClipboardItem.json
@@ -198,6 +198,41 @@
           }
         }
       },
+      "supports_static": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/clipboard-apis/#dom-clipboarditem-supports",
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "types": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ClipboardItem/types",
diff --git a/api/EditContext.json b/api/EditContext.json
new file mode 100644
index 00000000000000..7107b249ccc926
--- /dev/null
+++ b/api/EditContext.json
@@ -0,0 +1,694 @@
+{
+  "api": {
+    "EditContext": {
+      "__compat": {
+        "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext",
+        "tags": [
+          "web-features:edit-context"
+        ],
+        "support": {
+          "chrome": {
+            "version_added": "121"
+          },
+          "chrome_android": {
+            "version_added": false
+          },
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "EditContext": {
+        "__compat": {
+          "description": "<code>EditContext()</code> constructor",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-constructor",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "attachedElements": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-attachedelements",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "characterBounds": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-characterbounds",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "characterBoundsRangeStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-characterboundsrangestart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "characterboundsupdate_event": {
+        "__compat": {
+          "description": "<code>characterboundsupdate</code> event",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-oncharacterboundsupdate",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "compositionend_event": {
+        "__compat": {
+          "description": "<code>compositionend</code> event",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-oncompositionend",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "compositionstart_event": {
+        "__compat": {
+          "description": "<code>compositionstart</code> event",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-oncompositionstart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "selectionEnd": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontextinit-selectionend",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "selectionStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontextinit-selectionstart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "text": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-text",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "textformatupdate_event": {
+        "__compat": {
+          "description": "<code>textformatupdate</code> event",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-ontextformatupdate",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "textupdate_event": {
+        "__compat": {
+          "description": "<code>textupdate</code> event",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-ontextupdate",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateCharacterBounds": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-updatecharacterbounds",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateControlBounds": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-updatecontrolbounds",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateSelection": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-updateselection",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateSelectionBounds": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-updateselectionbounds",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateText": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-editcontext-updatetext",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/HTMLElement.json b/api/HTMLElement.json
index 1d33c75cca596e..2d5f4dfeb78a2a 100644
--- a/api/HTMLElement.json
+++ b/api/HTMLElement.json
@@ -1086,6 +1086,44 @@
           }
         }
       },
+      "editContext": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-htmlelement-editcontext",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "enterKeyHint": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLElement/enterKeyHint",
diff --git a/api/TextFormat.json b/api/TextFormat.json
new file mode 100644
index 00000000000000..4df4c60602cc13
--- /dev/null
+++ b/api/TextFormat.json
@@ -0,0 +1,233 @@
+{
+  "api": {
+    "TextFormat": {
+      "__compat": {
+        "spec_url": "https://w3c.github.io/edit-context/#dom-textformat",
+        "tags": [
+          "web-features:edit-context"
+        ],
+        "support": {
+          "chrome": {
+            "version_added": "121"
+          },
+          "chrome_android": {
+            "version_added": false
+          },
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "TextFormat": {
+        "__compat": {
+          "description": "<code>TextFormat()</code> constructor",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformat-constructor",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "rangeEnd": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformat-rangeend",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "rangeStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformat-rangestart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "underlineStyle": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformat-underlinestyle",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "underlineThickness": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformat-underlinethickness",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/TextFormatUpdateEvent.json b/api/TextFormatUpdateEvent.json
new file mode 100644
index 00000000000000..8531f8df5418f2
--- /dev/null
+++ b/api/TextFormatUpdateEvent.json
@@ -0,0 +1,119 @@
+{
+  "api": {
+    "TextFormatUpdateEvent": {
+      "__compat": {
+        "spec_url": "https://w3c.github.io/edit-context/#dom-textformatupdateevent",
+        "tags": [
+          "web-features:edit-context"
+        ],
+        "support": {
+          "chrome": {
+            "version_added": "121"
+          },
+          "chrome_android": {
+            "version_added": false
+          },
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "TextFormatUpdateEvent": {
+        "__compat": {
+          "description": "<code>TextFormatUpdateEvent()</code> constructor",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformatupdateevent-constructor",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "getTextFormats": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textformatupdateevent-gettextformats",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/api/TextUpdateEvent.json b/api/TextUpdateEvent.json
new file mode 100644
index 00000000000000..bc6ae081ff0bbd
--- /dev/null
+++ b/api/TextUpdateEvent.json
@@ -0,0 +1,271 @@
+{
+  "api": {
+    "TextUpdateEvent": {
+      "__compat": {
+        "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent",
+        "tags": [
+          "web-features:edit-context"
+        ],
+        "support": {
+          "chrome": {
+            "version_added": "121"
+          },
+          "chrome_android": {
+            "version_added": false
+          },
+          "edge": "mirror",
+          "firefox": {
+            "version_added": false
+          },
+          "firefox_android": "mirror",
+          "ie": {
+            "version_added": false
+          },
+          "oculus": "mirror",
+          "opera": "mirror",
+          "opera_android": "mirror",
+          "safari": {
+            "version_added": false
+          },
+          "safari_ios": "mirror",
+          "samsunginternet_android": "mirror",
+          "webview_android": "mirror"
+        },
+        "status": {
+          "experimental": true,
+          "standard_track": true,
+          "deprecated": false
+        }
+      },
+      "TextUpdateEvent": {
+        "__compat": {
+          "description": "<code>TextUpdateEvent()</code> constructor",
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-constructor",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "selectionEnd": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-selectionend",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "selectionStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-selectionstart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "text": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-text",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateRangeEnd": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-updaterangeend",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
+      "updateRangeStart": {
+        "__compat": {
+          "spec_url": "https://w3c.github.io/edit-context/#dom-textupdateevent-updaterangestart",
+          "tags": [
+            "web-features:edit-context"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": "121"
+            },
+            "chrome_android": {
+              "version_added": false
+            },
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/selectors/grammar-error.json b/css/selectors/grammar-error.json
index 450604330ba389..2c51cca5267c66 100644
--- a/css/selectors/grammar-error.json
+++ b/css/selectors/grammar-error.json
@@ -8,7 +8,7 @@
           "spec_url": "https://drafts.csswg.org/css-pseudo/#selectordef-grammar-error",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "121"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
diff --git a/css/selectors/spelling-error.json b/css/selectors/spelling-error.json
index 3158785fb05d15..4aa46fd1ee0d5d 100644
--- a/css/selectors/spelling-error.json
+++ b/css/selectors/spelling-error.json
@@ -8,7 +8,7 @@
           "spec_url": "https://drafts.csswg.org/css-pseudo/#selectordef-spelling-error",
           "support": {
             "chrome": {
-              "version_added": false
+              "version_added": "121"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
diff --git a/javascript/builtins/Array.json b/javascript/builtins/Array.json
index 65783458130609..59b731d81ae6ef 100644
--- a/javascript/builtins/Array.json
+++ b/javascript/builtins/Array.json
@@ -764,7 +764,7 @@
             "spec_url": "https://tc39.es/proposal-array-from-async/#sec-array.fromAsync",
             "support": {
               "chrome": {
-                "version_added": false
+                "version_added": "121"
               },
               "chrome_android": "mirror",
               "deno": {