diff --git a/testing/web-platform/tests/webvtt/api/VTTCue/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/api/VTTCue/WEB_FEATURES.yml
new file mode 100644
index 000000000000..bb2aa7cddd6d
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/api/VTTCue/WEB_FEATURES.yml
@@ -0,0 +1,20 @@
+features:
+- name: webvtt
+  files:
+  - align.html
+  - constructor-exceptions.html
+  - getCueAsHTML.html
+  - line.html
+  - position.html
+  - size.html
+  - snapToLines.html
+  - text.html
+  - vertical.html
+- name: webvtt-cue-alignment
+  files:
+  - lineAlign.html
+  - positionAlign.html
+- name: webvtt-regions
+  files:
+  - region.html
+# Note: constructor.html spans features and is not mapped.
diff --git a/testing/web-platform/tests/webvtt/api/VTTRegion/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/api/VTTRegion/WEB_FEATURES.yml
new file mode 100644
index 000000000000..c80f6b830b62
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/api/VTTRegion/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt-regions
+  files: "**"
diff --git a/testing/web-platform/tests/webvtt/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/parsing/cue-text-parsing/tests/WEB_FEATURES.yml
similarity index 100%
rename from testing/web-platform/tests/webvtt/WEB_FEATURES.yml
rename to testing/web-platform/tests/webvtt/parsing/cue-text-parsing/tests/WEB_FEATURES.yml
diff --git a/testing/web-platform/tests/webvtt/parsing/file-parsing/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/parsing/file-parsing/WEB_FEATURES.yml
new file mode 100644
index 000000000000..32c42f69ed54
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/parsing/file-parsing/WEB_FEATURES.yml
@@ -0,0 +1,4 @@
+features:
+- name: webvtt
+  files:
+  - signature-invalid.html
diff --git a/testing/web-platform/tests/webvtt/parsing/file-parsing/tests/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/parsing/file-parsing/tests/WEB_FEATURES.yml
new file mode 100644
index 000000000000..b85b127d1021
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/parsing/file-parsing/tests/WEB_FEATURES.yml
@@ -0,0 +1,47 @@
+features:
+- name: webvtt
+  files:
+  - arrows.html
+  - comment-in-cue-text.html
+  - header-garbage.html
+  - header-space.html
+  - header-tab.html
+  - header-timings.html
+  - ids.html
+  - newlines.html
+  - nulls.html
+  - settings-align.html
+  - settings-multiple.html
+  - settings-size.html
+  - settings-vertical.html
+  - signature-bom.html
+  - signature-no-newline.html
+  - signature-space-no-newline.html
+  - signature-space.html
+  - signature-tab-no-newline.html
+  - signature-tab.html
+  - signature-timings.html
+  - stylesheets.html
+  - timings-60.html
+  - timings-eof.html
+  - timings-garbage.html
+  - timings-negative.html
+  - timings-omitted-hours.html
+  - timings-too-long.html
+  - timings-too-short.html
+  - whitespace-chars.html
+- name: webvtt-cue-alignment
+  files:
+  - settings-line.html
+  - settings-position.html
+- name: webvtt-regions
+  files:
+  - header-regions.html
+  - regions-edge-case.html
+  - regions-id.html
+  - regions-lines.html
+  - regions-old.html
+  - regions-regionanchor.html
+  - regions-scroll.html
+  - regions-viewportanchor.html
+  - settings-region.html
diff --git a/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/WEB_FEATURES.yml
new file mode 100644
index 000000000000..5b5544deec22
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt
+  files: "**"
diff --git a/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/regions/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/regions/WEB_FEATURES.yml
new file mode 100644
index 000000000000..c80f6b830b62
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/regions/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt-regions
+  files: "**"
diff --git a/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region/WEB_FEATURES.yml
new file mode 100644
index 000000000000..c80f6b830b62
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt-regions
+  files: "**"
diff --git a/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region_function/WEB_FEATURES.yml b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region_function/WEB_FEATURES.yml
new file mode 100644
index 000000000000..c80f6b830b62
--- /dev/null
+++ b/testing/web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/cue-region_function/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: webvtt-regions
+  files: "**"