diff --git a/doc/source/doc/dfts.rst b/doc/source/doc/dfts.rst
index c143a2d..d46d821 100644
--- a/doc/source/doc/dfts.rst
+++ b/doc/source/doc/dfts.rst
@@ -7,7 +7,9 @@ Building DFTs
 =============
 .. seealso:: `01-dfts.py <https://github.com/moves-rwth/stormpy/blob/master/examples/dfts/01-dfts.py>`_
 
-Dynamic fault trees can be loaded from either the Galileo format via ``load_dft_json(path)`` or from a custom JSON format via ``load_dft_galileo(path)``.
+Dynamic fault trees can be loaded from either the Galileo format or from a custom JSON form.
+A file containing the DFT in the Galileo format can be loaded via ``load_dft_galileo_file(path)``.
+The custom JSON format can be loaded from a file via ``load_dft_json_file(path)`` or directly from a string via ``load_dft_json_string(path)``.
 We start by loading a simple DFT containing an AND gate from JSON::
 
     >>> import stormpy
@@ -15,14 +17,14 @@ We start by loading a simple DFT containing an AND gate from JSON::
     >>> import stormpy.examples
     >>> import stormpy.examples.files
     >>> path_json = stormpy.examples.files.dft_json_and
-    >>> dft_small = stormpy.dft.load_dft_json(path_json)
+    >>> dft_small = stormpy.dft.load_dft_json_file(path_json)
     >>> print(dft_small)
     Top level index: 2, Nr BEs2
 
 Next we load a more complex DFT from the Galileo format::
 
     >>> path_galileo = stormpy.examples.files.dft_galileo_hecs
-    >>> dft = stormpy.dft.load_dft_galileo(path_galileo)
+    >>> dft = stormpy.dft.load_dft_galileo_file(path_galileo)
 
 After loading the DFT, we can display some common statistics about the model::
 
diff --git a/examples/dfts/01-dfts.py b/examples/dfts/01-dfts.py
index 691d150..160c975 100644
--- a/examples/dfts/01-dfts.py
+++ b/examples/dfts/01-dfts.py
@@ -8,12 +8,12 @@ import stormpy.examples.files
 def example_dfts_01():
     # Load from JSON
     path_json = stormpy.examples.files.dft_json_and
-    dft_small = stormpy.dft.load_dft_json(path_json)
+    dft_small = stormpy.dft.load_dft_json_file(path_json)
     print(dft_small)
 
     # Load from Galileo
     path = stormpy.examples.files.dft_galileo_hecs
-    dft = stormpy.dft.load_dft_galileo(path)
+    dft = stormpy.dft.load_dft_galileo_file(path)
     print("DFT with {} elements.".format(dft.nr_elements()))
     print("DFT has {} BEs and {} dynamic elements.".format(dft.nr_be(), dft.nr_dynamic()))
 
diff --git a/src/dft/io.cpp b/src/dft/io.cpp
index 6c56334..38526d9 100644
--- a/src/dft/io.cpp
+++ b/src/dft/io.cpp
@@ -6,13 +6,15 @@
 void define_input(py::module& m) {
 
     // Load DFT input
-    m.def("load_dft_galileo", &storm::api::loadDFTGalileo<double>, "Load DFT from Galileo file", py::arg("path"));
+    m.def("load_dft_galileo_file", &storm::api::loadDFTGalileoFile<double>, "Load DFT from Galileo file", py::arg("path"));
     // Parse Jani model
-    m.def("load_dft_json", &storm::api::loadDFTJson<double>, "Load DFT from JSON file", py::arg("path"));
+    m.def("load_dft_json_file", &storm::api::loadDFTJsonFile<double>, "Load DFT from JSON file", py::arg("path"));
+    m.def("load_dft_json_string", &storm::api::loadDFTJsonString<double>, "Load DFT from JSON string", py::arg("json_string"));
 }
 
 void define_output(py::module& m) {
 
     // Export DFT
-    m.def("export_dft_json", &storm::api::exportDFTToJson<double>, "Export DFT to JSON file", py::arg("dft"), py::arg("path"));
+    m.def("export_dft_json_file", &storm::api::exportDFTToJsonFile<double>, "Export DFT to JSON file", py::arg("dft"), py::arg("path"));
+    m.def("export_dft_json_string", &storm::api::exportDFTToJsonString<double>, "Export DFT to JSON string", py::arg("dft"));
 }
diff --git a/tests/dft/test_build.py b/tests/dft/test_build.py
index d9a84fe..4a3ba51 100644
--- a/tests/dft/test_build.py
+++ b/tests/dft/test_build.py
@@ -9,21 +9,21 @@ from configurations import dft
 @dft
 class TestBuild:
     def test_load_dft_json(self):
-        dft = stormpy.dft.load_dft_json(get_example_path("dft", "and.json"))
+        dft = stormpy.dft.load_dft_json_file(get_example_path("dft", "and.json"))
         assert dft.nr_elements() == 3
         assert dft.nr_be() == 2
         assert dft.nr_dynamic() == 0
         assert not dft.can_have_nondeterminism()
 
     def test_load_dft_galileo(self):
-        dft = stormpy.dft.load_dft_galileo(get_example_path("dft", "hecs.dft"))
+        dft = stormpy.dft.load_dft_galileo_file(get_example_path("dft", "hecs.dft"))
         assert dft.nr_elements() == 23
         assert dft.nr_be() == 13
         assert dft.nr_dynamic() == 2
         assert not dft.can_have_nondeterminism()
 
     def test_analyze_mttf(self):
-        dft = stormpy.dft.load_dft_json(get_example_path("dft", "and.json"))
+        dft = stormpy.dft.load_dft_json_file(get_example_path("dft", "and.json"))
         formulas = stormpy.parse_properties("T=? [ F \"failed\" ]")
         assert dft.nr_elements() == 3
         results = stormpy.dft.analyze_dft(dft, [formulas[0].raw_formula])