diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/avif-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/avif-tests.ini
new file mode 100644
index 0000000000..595d687dfa
--- /dev/null
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/avif-tests.ini
@@ -0,0 +1,6 @@
+[test-1]
+enabled=True
+description=Test loading avif images from the nomacs formats testset
+folder=nomacs-testset/AVIF/
+files=avif-tests-1.files
+source=https://github.com/nomacs/formats_testset
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/batch-config.ini b/plug-ins/python/tests/test-file-plug-ins/tests/batch-config.ini
index d125ad378c..d574df9e93 100644
--- a/plug-ins/python/tests/test-file-plug-ins/tests/batch-config.ini
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/batch-config.ini
@@ -3,6 +3,12 @@ verbose=0
 
 # When adding ini files, don't forget to add them to meson.build
 
+[avif]
+enabled=True
+plugin-import=file-heif-av1-load
+extension=avif
+tests=avif-tests.ini
+
 [bmp]
 enabled=True
 enabled-export=False
@@ -48,6 +54,19 @@ plugin-import=file-gif-load
 extension=gif
 tests=gif-tests.ini
 
+[heic]
+enabled=True
+plugin-import=file-heif-load
+extension=heic
+tests=heic-tests.ini
+
+[hej2]
+# Needs libheif 1.17.0 or higher in our Debian CI before we can enable this.
+enabled=False
+plugin-import=file-heif-hej2-load
+extension=heic
+tests=hej2-tests.ini
+
 [icns]
 enabled=True
 plugin-import=file-icns-load
@@ -78,6 +97,12 @@ plugin-import=file-jpeg-load
 extension=jpg
 tests=jpeg-tests.ini
 
+[jxl]
+enabled=True
+plugin-import=file-jpegxl-load
+extension=jxl
+tests=jxl-tests.ini
+
 [pcx]
 enabled=True
 plugin-import=file-pcx-load
@@ -121,6 +146,12 @@ plugin-import=file-psp-load
 extension=psd
 tests=psp-tests.ini
 
+[qoi]
+enabled=True
+plugin-import=file-qoi-load
+extension=qoi
+tests=qoi-tests.ini
+
 [sgi]
 enabled=True
 plugin-import=file-sgi-load
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/heic-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/heic-tests.ini
new file mode 100644
index 0000000000..2d213d0611
--- /dev/null
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/heic-tests.ini
@@ -0,0 +1,6 @@
+[test-1]
+enabled=True
+description=Test loading heic images from the nomacs formats testset
+folder=nomacs-testset/HEIC/
+files=heic-tests-1.files
+source=https://github.com/nomacs/formats_testset
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/hej2-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/hej2-tests.ini
new file mode 100644
index 0000000000..49d954d101
--- /dev/null
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/hej2-tests.ini
@@ -0,0 +1,6 @@
+[test-1]
+enabled=True
+description=Test loading hej2 images from the nomacs formats testset
+folder=nomacs-testset/HEJ2/
+files=hej2-tests-1.files
+source=https://github.com/nomacs/formats_testset
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/jp2-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/jp2-tests.ini
index 4d36a640bd..8017ab7af5 100644
--- a/plug-ins/python/tests/test-file-plug-ins/tests/jp2-tests.ini
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/jp2-tests.ini
@@ -4,3 +4,10 @@ description=Test loading jp2 images from Pillow TestSuite
 folder=pillow/
 files=jp2-pillow-tests.files
 source=https://github.com/python-pillow/Pillow/tree/master/Tests/images
+
+[test-2]
+enabled=True
+description=Test loading hej2 images from the nomacs formats testset
+folder=nomacs-testset/JPEG2000/
+files=jpf-tests-1.files
+source=https://github.com/nomacs/formats_testset
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/jxl-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/jxl-tests.ini
new file mode 100644
index 0000000000..c92ec7aaf6
--- /dev/null
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/jxl-tests.ini
@@ -0,0 +1,6 @@
+[test-1]
+enabled=True
+description=Test loading jxl images from the nomacs formats testset
+folder=nomacs-testset/JXL/
+files=jxl-tests-1.files
+source=https://github.com/nomacs/formats_testset
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/meson.build b/plug-ins/python/tests/test-file-plug-ins/tests/meson.build
index 4b5e69874d..0c60a0f659 100644
--- a/plug-ins/python/tests/test-file-plug-ins/tests/meson.build
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/meson.build
@@ -5,6 +5,7 @@ install_data([
     'config.ini',       # not yet updated!
     'batch-config.ini',
     # file format specific config files for import testing
+    'avif-tests.ini',
     'bmp-tests.ini',
     'dcx-tests.ini',
     'dds-tests.ini',
@@ -12,17 +13,21 @@ install_data([
     'fits-tests.ini',
     'fli-tests.ini',
     'gif-tests.ini',
+    'heic-tests.ini',
+    'hej2-tests.ini',
     'icns-tests.ini',
     'ico-tests.ini',
     'j2k-tests.ini',
     'jp2-tests.ini',
     'jpeg-tests.ini',
+    'jxl-tests.ini',
     'pcx-tests.ini',
     'png-tests.ini',
     'pnm-tests.ini',
     'psb-tests.ini',
     'psd-tests.ini',
     'psp-tests.ini',
+    'qoi-tests.ini',
     'sgi-tests.ini',
     'tga-tests.ini',
     'tif-tests.ini',
diff --git a/plug-ins/python/tests/test-file-plug-ins/tests/qoi-tests.ini b/plug-ins/python/tests/test-file-plug-ins/tests/qoi-tests.ini
new file mode 100644
index 0000000000..c0681a63da
--- /dev/null
+++ b/plug-ins/python/tests/test-file-plug-ins/tests/qoi-tests.ini
@@ -0,0 +1,6 @@
+[test-1]
+enabled=True
+description=Test loading qoi images from the nomacs formats testset
+folder=nomacs-testset/QOI/
+files=qoi-tests-1.files
+source=https://github.com/nomacs/formats_testset