diff --git a/.github/workflows/test-heif-convert.yml b/.github/workflows/test-heif-convert.yml
new file mode 100644
index 0000000..299341b
--- /dev/null
+++ b/.github/workflows/test-heif-convert.yml
@@ -0,0 +1,44 @@
+name: Test heif-convert
+
+on: [push, pull_request]
+
+jobs:
+  test-script:
+    name: Test Script
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install heif-convert
+        run: pip3 install .
+
+      - name: Add executable permission to test-script
+        working-directory: tests
+        run: chmod +x test-script.sh
+
+      - name: Run Test
+        working-directory: tests
+        run: ./test-script.sh
+
+  test-docker-image:
+    name: Test Docker Image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build Docker Image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: false
+          tags: nevermendel/heif-convert
+
+      - name: Add executable permission to test-docker-image
+        working-directory: tests
+        run: chmod +x test-docker-image.sh
+
+      - name: Run Test
+        working-directory: tests
+        run: ./test-docker-image.sh
diff --git a/tests/image.heic b/tests/image.heic
new file mode 100644
index 0000000..381b0f0
Binary files /dev/null and b/tests/image.heic differ
diff --git a/tests/image.jpg b/tests/image.jpg
new file mode 100644
index 0000000..1491c3f
Binary files /dev/null and b/tests/image.jpg differ
diff --git a/tests/image.png b/tests/image.png
new file mode 100644
index 0000000..a8ee9b2
Binary files /dev/null and b/tests/image.png differ
diff --git a/tests/test-docker-image.sh b/tests/test-docker-image.sh
new file mode 100755
index 0000000..22eb936
--- /dev/null
+++ b/tests/test-docker-image.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+docker run -v "$(pwd)":/usr/app/out --rm nevermendel/heif-convert image.heic -f jpg -q 90 -o result
+docker run -v "$(pwd)":/usr/app/out --rm nevermendel/heif-convert image.heic -f png -o result
+
+status_code=0
+
+if ! cmp -s image.jpg result.jpg; then
+  echo "jpg image is different"
+  status_code=1
+fi
+
+if ! cmp -s image.png result.png; then
+  echo "png image is different"
+  status_code=1
+fi
+
+exit $status_code
diff --git a/tests/test-script.sh b/tests/test-script.sh
new file mode 100755
index 0000000..b85cd67
--- /dev/null
+++ b/tests/test-script.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+heif-convert image.heic -f jpg -q 90 -o result
+heif-convert image.heic -f png -o result
+
+status_code=0
+
+if ! cmp -s image.jpg result.jpg; then
+  echo "jpg image is different"
+  status_code=1
+fi
+
+if ! cmp -s image.png result.png; then
+  echo "png image is different"
+  status_code=1
+fi
+
+exit $status_code