diff --git a/imageio/imageio-webp/src/main/java/com/twelvemonkeys/imageio/plugins/webp/WebPImageReaderSpi.java b/imageio/imageio-webp/src/main/java/com/twelvemonkeys/imageio/plugins/webp/WebPImageReaderSpi.java
index d6d712d1..f23ceec9 100644
--- a/imageio/imageio-webp/src/main/java/com/twelvemonkeys/imageio/plugins/webp/WebPImageReaderSpi.java
+++ b/imageio/imageio-webp/src/main/java/com/twelvemonkeys/imageio/plugins/webp/WebPImageReaderSpi.java
@@ -35,6 +35,7 @@ import com.twelvemonkeys.imageio.spi.ImageReaderSpiBase;
 
 import javax.imageio.ImageReader;
 import javax.imageio.stream.ImageInputStream;
+import java.io.EOFException;
 import java.io.IOException;
 import java.nio.ByteOrder;
 import java.util.Locale;
@@ -76,7 +77,8 @@ public final class WebPImageReaderSpi extends ImageReaderSpiBase {
             switch (chunk) {
                 // TODO. Support lossless
 //                 case WebP.CHUNK_VP8L:
-//                 case WebP.CHUNK_VP8X:
+                case WebP.CHUNK_VP8X:
+                    return containsSupportedChunk(stream, chunk);
                 case WebP.CHUNK_VP8_:
                     return true;
                 default:
@@ -89,6 +91,30 @@ public final class WebPImageReaderSpi extends ImageReaderSpiBase {
         }
     }
 
+    private static boolean containsSupportedChunk(ImageInputStream stream, int chunk) throws IOException {
+        // Temporary: Seek for VP8_, either first or second (after ICCP), or inside ANMF...
+        try {
+            while (chunk != WebP.CHUNK_VP8L && chunk != WebP.CHUNK_ALPH) {
+                long length = stream.readUnsignedInt();
+                stream.seek(stream.getStreamPosition() + length);
+                chunk = stream.readInt();
+
+                // Look inside ANMF chunks...
+                if (chunk == WebP.CHUNK_ANMF) {
+                    stream.seek(stream.getStreamPosition() + 4 + 16);
+                    chunk = stream.readInt();
+                }
+
+                if (chunk == WebP.CHUNK_VP8_) {
+                    return true;
+                }
+            }
+        }
+        catch (EOFException ignore) {}
+
+        return false;
+    }
+
     @Override
     public ImageReader createReaderInstance(final Object extension) {
         return new WebPImageReader(this);