diff --git a/osxphotos/imageconverter.py b/osxphotos/imageconverter.py
index e3fdc358..061dd3da 100644
--- a/osxphotos/imageconverter.py
+++ b/osxphotos/imageconverter.py
@@ -1,6 +1,6 @@
 """ ImageConverter class
     Convert an image to JPEG using CoreImage -- 
-    for example, RAW to JPEG """
+    for example, RAW to JPEG.  Only works if Mac equipped with GPU. """
 
 # reference: https://stackoverflow.com/questions/59330149/coreimage-ciimage-write-jpg-is-shifting-colors-macos/59334308#59334308
 
diff --git a/tests/test_cli.py b/tests/test_cli.py
index e4eca0b2..1e75c540 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -840,6 +840,10 @@ def test_export_edited_suffix():
         assert sorted(files) == sorted(CLI_EXPORT_FILENAMES_EDITED_SUFFIX)
 
 
+@pytest.mark.skipif(
+    "OSXPHOTOS_TEST_CONVERT" not in os.environ,
+    reason="Skip if running in Github actions, no GPU.",
+)
 def test_export_convert_to_jpeg():
     """ test --convert-to-jpeg """
     import glob
@@ -862,6 +866,10 @@ def test_export_convert_to_jpeg():
         assert large_file.stat().st_size > 10000000
 
 
+@pytest.mark.skipif(
+    "OSXPHOTOS_TEST_CONVERT" not in os.environ,
+    reason="Skip if running in Github actions, no GPU.",
+)
 def test_export_convert_to_jpeg_quality():
     """ test --convert-to-jpeg --jpeg-quality """
     import glob
diff --git a/tests/test_export_convert_to_jpeg.py b/tests/test_export_convert_to_jpeg.py
index 578a7ef5..e992b15e 100644
--- a/tests/test_export_convert_to_jpeg.py
+++ b/tests/test_export_convert_to_jpeg.py
@@ -1,7 +1,13 @@
+import os
 import pytest
 
 from osxphotos._constants import _UNKNOWN_PERSON
 
+skip_test = "OSXPHOTOS_TEST_CONVERT" not in os.environ
+pytestmark = pytest.mark.skipif(
+    skip_test, reason="Skip if running on GitHub actions, no GPU."
+)
+
 PHOTOS_DB = "tests/Test-10.15.6.photoslibrary"
 
 UUID_DICT = {
diff --git a/tests/test_fileutil.py b/tests/test_fileutil.py
index 334fd228..474d04b5 100644
--- a/tests/test_fileutil.py
+++ b/tests/test_fileutil.py
@@ -1,5 +1,6 @@
 """ test FileUtil """
 
+import os
 import pytest
 
 TEST_HEIC = "tests/test-images/IMG_3092.heic"
@@ -72,6 +73,10 @@ def test_unlink_file():
     assert not os.path.isfile(dest)
 
 
+@pytest.mark.skipif(
+    "OSXPHOTOS_TEST_CONVERT" not in os.environ,
+    reason="Skip if running in Github actions, no GPU.",
+)
 def test_convert_to_jpeg():
     """ test convert_to_jpeg """
     import pathlib
@@ -85,7 +90,10 @@ def test_convert_to_jpeg():
         assert FileUtil.convert_to_jpeg(imgfile, outfile)
         assert outfile.is_file()
 
-
+@pytest.mark.skipif(
+    "OSXPHOTOS_TEST_CONVERT" not in os.environ,
+    reason="Skip if running in Github actions, no GPU.",
+)
 def test_convert_to_jpeg_quality():
     """ test convert_to_jpeg with compression_quality """
     import pathlib