diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index be613e9..008fd67 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -56,12 +56,12 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     strategy:
-      fail-fast: false
+      fail-fast: true
 
       matrix:
         laravel: [ '10', '9', '8' ]
         php: [ '8.2', '8.1', '8.0' ]
-        os: [ ubuntu-latest, windows-latest, macOS-latest ]
+        os: [ ubuntu-latest ]
 
     steps:
       - uses: actions/checkout@v3
@@ -70,7 +70,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-          extensions: fileinfo, imagick
+          extensions: fileinfo, imagick, gd
           coverage: xdebug
 
       - name: Get composer cache directory for Windows
diff --git a/src/Facades/Thumbhash.php b/src/Facades/Thumbhash.php
index 5023982..4f4d98e 100644
--- a/src/Facades/Thumbhash.php
+++ b/src/Facades/Thumbhash.php
@@ -8,6 +8,9 @@
 
 /**
  * @method static string encode(mixed|string|UploadedFile|Image $data)
+ * @method static void setDriver(string $driver)
+ * @method static string getDriver()
+ * @method static void setResizedImageMaxSize(int $imageMaxSize)
  */
 class Thumbhash extends Facade
 {
diff --git a/tests/LaravelTest.php b/tests/LaravelTest.php
index f63fae7..6fe882f 100644
--- a/tests/LaravelTest.php
+++ b/tests/LaravelTest.php
@@ -46,5 +46,19 @@ public function testPackageLoaded(): void
             $hash,
             Thumbhash::encode(__DIR__ . '/assets/sunrise.jpg'),
         );
+
+        // Test GD
+
+        Thumbhash::setDriver('gd');
+
+        $this->assertSame(
+            'gd',
+            Thumbhash::getDriver()
+        );
+
+        $this->assertSame(
+            $hash,
+            Thumbhash::encode(__DIR__ . '/assets/sunrise.jpg'),
+        );
     }
 }
diff --git a/tests/ThumbhashTest.php b/tests/ThumbhashTest.php
index af4ec78..8a61871 100644
--- a/tests/ThumbhashTest.php
+++ b/tests/ThumbhashTest.php
@@ -5,13 +5,9 @@
 use Riajul\Thumbhash\Thumbhash;
 use PHPUnit\Framework\TestCase;
 
-/**
- * These tests are only Imagick compatible.
- * If you use GD driver, than results will unexpected.
- */
 class ThumbhashTest extends TestCase
 {
-    public function testEncode(): void
+    public function testEncodeImagick(): void
     {
         $data = [
             [
@@ -54,7 +50,7 @@ public function testEncode(): void
             ],
         ];
 
-        $hash = new Thumbhash();
+        $hash = new Thumbhash('imagick');
 
         $this->assertSame(
             'imagick',
@@ -68,4 +64,62 @@ public function testEncode(): void
             );
         }
     }
+
+    public function testEncodeGd(): void
+    {
+        $data = [
+            [
+                'url'  => 'assets/sunrise.jpg',
+                'hash' => '1QcSHQRnh493V4dIh4eXh1h4kJUI'
+            ],
+            [
+                'url'  => 'assets/sunset.jpg',
+                'hash' => '3PcNNYSFeXh/d3eld0iHZoZgVwh2'
+            ],
+            [
+                'url'  => 'assets/field.jpg',
+                'hash' => '3OcRJYB4d3h/iIeHeEh3eIhw+j3A'
+            ],
+            [
+                'url'  => 'assets/fall.jpg',
+                'hash' => 'HBkSHYSIeHiPiHh8eJd4eTN0EEQG'
+            ],
+            [
+                'url'  => 'assets/street.jpg',
+                'hash' => 'VggKDYAW6lZvdYd6d2iZh/p4GE/k'
+            ],
+            [
+                'url'  => 'assets/mountain.jpg',
+                'hash' => '2fcZFIB3iId/h3iJh4aIYJ2W8g'
+            ],
+            [
+                'url'  => 'assets/coast.jpg',
+                'hash' => 'IQgSLYZ6iHePh4h1eFeHh4dwgwg3'
+            ],
+
+            // Images with transparency
+            [
+                'url'  => 'assets/firefox.png',
+                'hash' => 'YJqGPQw7sFlslqhFafSE+Q6oJ1h2iHB2Rw'
+            ],
+            [
+                'url'  => 'assets/opera.png',
+                'hash' => 'mYqDBQQnxnj0JoLYdN7f8JhpuDeHiHdwZw'
+            ],
+        ];
+
+        $hash = new Thumbhash('gd');
+
+        $this->assertSame(
+            'gd',
+            $hash->getDriver(),
+        );
+
+        foreach ($data as $item) {
+            $this->assertSame(
+                $item['hash'],
+                $hash->encode(__DIR__ . '/' . $item['url'])
+            );
+        }
+    }
 }