diff --git a/internal/images/image_test.go b/internal/images/image_test.go
index 18a89c6..107959b 100644
--- a/internal/images/image_test.go
+++ b/internal/images/image_test.go
@@ -67,3 +67,24 @@ func TestResizeWithRotation(t *testing.T) {
 	assert.Equal(t, testdata.RotatedImageThumbnailWidth, size.Width)
 	assert.Equal(t, testdata.RotatedImageThumbnailHeight, size.Height)
 }
+
+func TestWebpSupport(t *testing.T) {
+	tmp, err := os.MkdirTemp("", "foto-test")
+	assert.Nil(t, err)
+
+	size, err := GetPhotoSize(testdata.WebpTestFile)
+	assert.Equal(t, testdata.WebpTestfileWidth, size.Width)
+	assert.Equal(t, testdata.WebpTestfileHeight, size.Height)
+
+	path := filepath.Join(tmp, "resized.webp")
+
+	err = ResizeImage(testdata.WebpTestFile, path, testdata.WebpThumbnailWidth)
+	assert.Nil(t, err)
+
+	size, err = GetPhotoSize(path)
+	assert.Equal(t, testdata.WebpThumbnailWidth, size.Width)
+	assert.Equal(t, testdata.WebpThumbnailHeight, size.Height)
+
+	checksum, _ := files.Checksum(path)
+	assert.Equal(t, testdata.WebpExpectedThubmnailChecksum, *checksum)
+}
diff --git a/internal/testdata/testdata.go b/internal/testdata/testdata.go
index 93a6917..a209bee 100644
--- a/internal/testdata/testdata.go
+++ b/internal/testdata/testdata.go
@@ -102,3 +102,13 @@ var (
 	RotatedImageThumbnailWidth  = 640
 	RotatedImageThumbnailHeight = 480
 )
+
+var (
+	WebpTestFile       = "../../testdata/webp/test.webp"
+	WebpTestfileWidth  = 8000
+	WebpTestfileHeight = 6000
+
+	WebpThumbnailWidth            = 640
+	WebpThumbnailHeight           = 480
+	WebpExpectedThubmnailChecksum = "5a5f8fcae2e37e504d6e062ee8adefac45ec9102a410faa16d4a0278b310b0c8"
+)
diff --git a/testdata/webp/test-640.webp b/testdata/webp/test-640.webp
new file mode 100644
index 0000000..18b47b7
Binary files /dev/null and b/testdata/webp/test-640.webp differ
diff --git a/testdata/webp/test.webp b/testdata/webp/test.webp
new file mode 100644
index 0000000..85ebf65
Binary files /dev/null and b/testdata/webp/test.webp differ