diff --git a/openmc/model/model.py b/openmc/model/model.py
index ad898fd0ad..bc0796ea74 100644
--- a/openmc/model/model.py
+++ b/openmc/model/model.py
@@ -624,15 +624,9 @@ class Model:
                             openmc.lib.materials[domain_id].volume = \
                                 vol_calc.volumes[domain_id].n
 
-    def plot_geometry(self, output=True, cwd='.', openmc_exec='openmc',
-                      convert=True, convert_exec='convert'):
+    def plot_geometry(self, output=True, cwd='.', openmc_exec='openmc'):
         """Creates plot images as specified by the Model.plots attribute
 
-        If convert is True, this function requires that a program is installed
-        to convert PPM files to PNG files. Typically, that would be
-        `ImageMagick <https://www.imagemagick.org>`_ which includes a
-        `convert` command.
-
         .. versionadded:: 0.13.0
 
         Parameters
@@ -645,10 +639,7 @@ class Model:
         openmc_exec : str, optional
             Path to OpenMC executable. Defaults to 'openmc'.
             This only applies to the case when not using the C API.
-        convert : bool, optional
-            Whether or not to attempt to convert from PPM to PNG
-        convert_exec : str, optional
-            Command that can convert PPM files into PNG files
+
         """
 
         if len(self.plots) == 0:
@@ -664,15 +655,6 @@ class Model:
                 self.export_to_xml()
                 openmc.plot_geometry(output=output, openmc_exec=openmc_exec)
 
-            if convert:
-                for p in self.plots:
-                    if p.filename is not None:
-                        ppm_file = f'{p.filename}.ppm'
-                    else:
-                        ppm_file = f'plot_{p.id}.ppm'
-                    png_file = ppm_file.replace('.ppm', '.png')
-                    subprocess.check_call([convert_exec, ppm_file, png_file])
-
     def _change_py_lib_attribs(self, names_or_ids, value, obj_type,
                                attrib_name, density_units='atom/b-cm'):
         # Method to do the same work whether it is a cell or material and
diff --git a/tests/unit_tests/test_model.py b/tests/unit_tests/test_model.py
index b1021a2694..994130f89a 100644
--- a/tests/unit_tests/test_model.py
+++ b/tests/unit_tests/test_model.py
@@ -332,27 +332,17 @@ def test_plots(run_in_tmpdir, pin_model_attributes, mpi_intracomm):
     # check that a plot was made and that the expected ppm and png files are
     # there
 
-    # We will only test convert if it is on the system, so as not to add an
-    # extra dependency just for tests
-    convert = which('convert') is not None
-    if convert:
-        exts = ['ppm', 'png']
-    else:
-        exts = ['ppm']
-
     # We will run the test twice, the first time without C API, the second with
     for i in range(2):
         if i == 1:
             test_model.init_lib(output=False, intracomm=mpi_intracomm)
-        test_model.plot_geometry(output=False, convert=convert)
+        test_model.plot_geometry(output=False)
 
-        # Now look for the files, expect to find test.ppm, plot_2.ppm, and if
-        # convert is True, test.png, plot_2.png
-        for fname in ['test.', 'plot_2.']:
-            for ext in exts:
-                test_file = Path(f'./{fname}{ext}')
-                assert test_file.exists()
-                test_file.unlink()
+        # Now look for the files
+        for fname in ('test.png', 'plot_2.png'):
+            test_file = Path(fname)
+            assert test_file.exists()
+            test_file.unlink()
 
     test_model.finalize_lib()