diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index a433a24c8a22..ad3c2af2c21d 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -113901,6 +113901,18 @@
      {}
     ]
    ],
+   "css/css-fonts/font-feature-settings-descriptor-01.html": [
+    [
+     "/css/css-fonts/font-feature-settings-descriptor-01.html",
+     [
+      [
+       "/css/css-fonts/font-feature-settings-descriptor-01-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-fonts/font-features-across-space-1.html": [
     [
      "/css/css-fonts/font-features-across-space-1.html",
@@ -241788,6 +241800,11 @@
      {}
     ]
    ],
+   "css/css-fonts/font-feature-settings-descriptor-01-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-fonts/font-features-across-space-1-ref.html": [
     [
      {}
@@ -499364,6 +499381,14 @@
    "6a46776acc325ad42993555d516c6a057d801df8",
    "support"
   ],
+  "css/css-fonts/font-feature-settings-descriptor-01-ref.html": [
+   "04e058c647517729219ff890434eb8d2275eec25",
+   "support"
+  ],
+  "css/css-fonts/font-feature-settings-descriptor-01.html": [
+   "c7af57927b99d476e80ffdbfaac06b42fb04b71a",
+   "reftest"
+  ],
   "css/css-fonts/font-feature-settings-serialization-001.html": [
    "bf557e7f93663a36dab3ea358401b16c2e88811a",
    "testharness"
diff --git a/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01-ref.html b/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01-ref.html
new file mode 100644
index 000000000000..4a1723e69088
--- /dev/null
+++ b/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01-ref.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<title>CSS Test: font-feature-settings descriptor</title>
+<style>
+  @font-face {
+    font-family: fwf;
+    src: url(support/fonts/FontWithFancyFeatures.otf);
+  }
+  .test {
+	  font-family: fwf;
+	  font-size: 2.4em;
+	  line-height: 1.1;
+  }
+</style>
+
+<body>
+<p>Test passes if the three lines below are identical, with eight check marks (✓). </p>
+<section class="test">
+    <p class="ref">AAAAAAAA</p>
+    <p class="ref">AAAAAAAA</p>
+    <p class="ref">AAAAAAAA</p>
+</section>
diff --git a/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01.html b/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01.html
new file mode 100644
index 000000000000..8f7c50661a7a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-fonts/font-feature-settings-descriptor-01.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html lang="en">
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+<title>CSS Test: font-feature-settings descriptor</title>
+<link rel="author" title="Chris Lilley" href="chris@w3.org">
+<link rel="help" href="https://www.w3.org/TR/css-fonts-3/#font-rend-desc">
+<link rel="help" href="https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop">
+<link rel="match" href="font-feature-settings-descriptor-01-ref.html">
+<meta name="assert" content="These descriptors define initial settings that apply when the font defined by an @font-face rule is rendered">
+<style>
+  @font-face {
+    font-family: fwf;
+    src: url(support/fonts/FontWithFancyFeatures.otf);
+  }
+  @font-face {
+    font-family: fwf2;
+    src: url(support/fonts/FontWithFancyFeatures.otf);
+    font-feature-settings: "liga" on, "clig" on, "calt" on, "hlig" on, "dlig" on, "onum" on, "smcp" on, "jp90" on;
+  }
+  .test {
+	  font-family: fwf;
+	  font-size: 2.4em;
+	  line-height: 1.1;
+  }
+  .test>p.descriptor {
+      font-family: fwf2;
+  }
+  .property {
+    font-feature-settings: "liga" on, "clig" on, "calt" on, "hlig" on, "dlig" on, "onum" on, "smcp" on, "jp90" on;
+  }
+</style>
+
+<body>
+<p>Test passes if the three lines below are identical, with eight check marks (✓). </p>
+<section class="test">
+    <p class="descriptor">CDGFEJQa</p>
+	<p class="property">CDGFEJQa</p>
+	<p class="ref">AAAAAAAA</p>
+</section>
\ No newline at end of file
