diff --git a/css/properties/reading-flow.json b/css/properties/reading-flow.json
index 2612941291f3b4..a09666962f08de 100644
--- a/css/properties/reading-flow.json
+++ b/css/properties/reading-flow.json
@@ -9,15 +9,7 @@
           ],
           "support": {
             "chrome": {
-              "version_added": "128",
-              "flags": [
-                {
-                  "type": "preference",
-                  "name": "layout.css.reading-flow.enabled",
-                  "value_to_set": "true"
-                }
-              ],
-              "impl_url": "https://crbug.com/40932006"
+              "version_added": "137"
             },
             "chrome_android": "mirror",
             "edge": "mirror",
@@ -44,6 +36,265 @@
             "standard_track": true,
             "deprecated": false
           }
+        },
+        "flex-flow": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-flex-flow",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "flex-visual": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-flex-visual",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "grid-columns": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-grid-columns",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "grid-order": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-grid-order",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "grid-rows": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-grid-rows",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "normal": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-normal",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "source-order": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-display-4/#valdef-reading-flow-source-order",
+            "tags": [
+              "web-features:reading-flow"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "137"
+              },
+              "chrome_android": "mirror",
+              "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",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       }
     }
diff --git a/css/properties/reading-order.json b/css/properties/reading-order.json
new file mode 100644
index 00000000000000..2512052d69caca
--- /dev/null
+++ b/css/properties/reading-order.json
@@ -0,0 +1,40 @@
+{
+  "css": {
+    "properties": {
+      "reading-order": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-display-4/#reading-order",
+          "support": {
+            "chrome": {
+              "version_added": "137"
+            },
+            "chrome_android": "mirror",
+            "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",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}