diff --git a/extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTestsUtils.java b/extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTestsUtils.java
index a98039873..fec933c00 100644
--- a/extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTestsUtils.java
+++ b/extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTestsUtils.java
@@ -1,11 +1,16 @@
 package org.schabi.newpipe.extractor.services.youtube;
 
+import org.schabi.newpipe.extractor.ExtractorAsserts;
+import org.schabi.newpipe.extractor.Image;
+import org.schabi.newpipe.extractor.services.DefaultTests;
 import org.schabi.newpipe.extractor.services.youtube.extractors.YoutubeStreamExtractor;
 
+import javax.annotation.Nullable;
+import java.util.Collection;
 import java.util.Random;
 
 /**
- * Utility class for keeping YouTube tests stateless.
+ * Utility class for YouTube tests.
  */
 public final class YoutubeTestsUtils {
     private YoutubeTestsUtils() {
@@ -26,4 +31,20 @@ public final class YoutubeTestsUtils {
         YoutubeParsingHelper.setNumberGenerator(new Random(1));
         YoutubeStreamExtractor.resetDeobfuscationCode();
     }
+
+    /**
+     * Test that YouTube images of a {@link Collection} respect
+     * {@link DefaultTests#defaultTestImageCollection(Collection) default requirements} and contain
+     * the string {@code yt} in their URL.
+     *
+     * @param images a YouTube {@link Image} {@link Collection}
+     */
+    public static void testImages(@Nullable final Collection<Image> images) {
+        DefaultTests.defaultTestImageCollection(images);
+        // Disable NPE warning because if the collection is null, an AssertionError would be thrown
+        // by DefaultTests.defaultTestImageCollection
+        //noinspection DataFlowIssue
+        images.forEach(image ->
+            ExtractorAsserts.assertContains("yt", image.getUrl()));
+    }
 }