diff --git a/css/properties/font-synthesis-position.json b/css/properties/font-synthesis-position.json
new file mode 100644
index 00000000000000..adf2ce374c969c
--- /dev/null
+++ b/css/properties/font-synthesis-position.json
@@ -0,0 +1,40 @@
+{
+  "css": {
+    "properties": {
+      "font-synthesis-position": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/font-synthesis-position",
+          "spec_url": "https://drafts.csswg.org/css-fonts/#font-synthesis-position",
+          "support": {
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "118"
+            },
+            "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": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/font-synthesis.json b/css/properties/font-synthesis.json
index 7ec90ca7956cd1..682d0435f05778 100644
--- a/css/properties/font-synthesis.json
+++ b/css/properties/font-synthesis.json
@@ -34,6 +34,39 @@
             "deprecated": false
           }
         },
+        "position": {
+          "__compat": {
+            "description": "<code>position</code>",
+            "support": {
+              "chrome": {
+                "version_added": false
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "118"
+              },
+              "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": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "small-caps": {
           "__compat": {
             "description": "<code>small-caps</code>",
@@ -66,6 +99,72 @@
               "deprecated": false
             }
           }
+        },
+        "style": {
+          "__compat": {
+            "description": "<code>style</code>",
+            "support": {
+              "chrome": {
+                "version_added": "97"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "111"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "10.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "weight": {
+          "__compat": {
+            "description": "<code>weight</code>",
+            "support": {
+              "chrome": {
+                "version_added": "97"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "111"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "10.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
         }
       }
     }