diff --git a/src/Mod/Import/App/AppImportPy.cpp b/src/Mod/Import/App/AppImportPy.cpp
index 1769b4fa22..2fbeef16c0 100644
--- a/src/Mod/Import/App/AppImportPy.cpp
+++ b/src/Mod/Import/App/AppImportPy.cpp
@@ -279,7 +279,6 @@ private:
 
         std::string Utf8Name = std::string(Name);
         PyMem_Free(Name);
-        std::string name8bit = Part::encodeFilename(Utf8Name);
 
         try {
             Py::Sequence list(object);
@@ -344,7 +343,7 @@ private:
                 writer.write(hDoc);
             }
             else if (file.hasExtension({"glb", "gltf"})) {
-                Import::WriterGltf writer(name8bit, file);
+                Import::WriterGltf writer(file);
                 writer.write(hDoc);
             }
 
diff --git a/src/Mod/Import/App/ReaderGltf.cpp b/src/Mod/Import/App/ReaderGltf.cpp
index a32b2f42dc..47da47f2ce 100644
--- a/src/Mod/Import/App/ReaderGltf.cpp
+++ b/src/Mod/Import/App/ReaderGltf.cpp
@@ -24,7 +24,6 @@
 
 #include "PreCompiled.h"
 #ifndef _PreComp_
-#include <sstream>
 #include <Standard_Version.hxx>
 #include <TDF_Label.hxx>
 #include <TDF_TagSource.hxx>
@@ -60,9 +59,7 @@ void ReaderGltf::read(Handle(TDocStd_Document) hDoc)  // NOLINT
     TCollection_AsciiString filename(file.filePath().c_str());
     Standard_Boolean ret = aReader.Perform(filename, Message_ProgressRange());
     if (!ret) {
-        std::stringstream str;
-        str << "Cannot read from file '"
-            << "" << file.filePath() << "'";
+        throw Base::FileException("Cannot read from file: ", file);
     }
 
     Handle(XCAFDoc_ShapeTool) aShapeTool = XCAFDoc_DocumentTool::ShapeTool(hDoc->Main());
@@ -77,6 +74,7 @@ void ReaderGltf::read(Handle(TDocStd_Document) hDoc)  // NOLINT
     }
 
 #else
+    (void)hDoc;
     throw Base::RuntimeError("gITF support requires OCCT 7.5.0 or later");
 #endif
 }
diff --git a/src/Mod/Import/App/ReaderIges.cpp b/src/Mod/Import/App/ReaderIges.cpp
index 6f0373eb4c..22171052e2 100644
--- a/src/Mod/Import/App/ReaderIges.cpp
+++ b/src/Mod/Import/App/ReaderIges.cpp
@@ -66,7 +66,7 @@ void ReaderIges::read(Handle(TDocStd_Document) hDoc)  // NOLINT
     aReader.SetNameMode(true);
     aReader.SetLayerMode(true);
     if (aReader.ReadFile(name8bit.c_str()) != IFSelect_RetDone) {
-        throw Base::FileException("cannot read IGES file", utf8Name.c_str());
+        throw Base::FileException("Cannot read IGES file", file);
     }
 
 #if OCC_VERSION_HEX < 0x070500
diff --git a/src/Mod/Import/App/ReaderStep.cpp b/src/Mod/Import/App/ReaderStep.cpp
index 3fb24a5dab..47cbb48f5b 100644
--- a/src/Mod/Import/App/ReaderStep.cpp
+++ b/src/Mod/Import/App/ReaderStep.cpp
@@ -52,7 +52,7 @@ void ReaderStep::read(Handle(TDocStd_Document) hDoc)  // NOLINT
     aReader.SetLayerMode(true);
     aReader.SetSHUOMode(true);
     if (aReader.ReadFile(name8bit.c_str()) != IFSelect_RetDone) {
-        throw Base::FileException("Cannot read STEP file");
+        throw Base::FileException("Cannot read STEP file", file);
     }
 
 #if OCC_VERSION_HEX < 0x070500
diff --git a/src/Mod/Import/App/WriterGltf.cpp b/src/Mod/Import/App/WriterGltf.cpp
index e6cb037fd0..43ef543c4a 100644
--- a/src/Mod/Import/App/WriterGltf.cpp
+++ b/src/Mod/Import/App/WriterGltf.cpp
@@ -24,7 +24,6 @@
 
 #include "PreCompiled.h"
 #ifndef _PreComp_
-#include <sstream>
 #include <Standard_Version.hxx>
 #include <TColStd_IndexedDataMapOfStringString.hxx>
 #if OCC_VERSION_HEX >= 0x070500
@@ -35,16 +34,19 @@
 
 #include "WriterGltf.h"
 #include <Base/Exception.h>
+#include <Mod/Part/App/encodeFilename.h>
 
 using namespace Import;
 
-WriterGltf::WriterGltf(std::string name8bit, const Base::FileInfo& file)  // NOLINT
-    : name8bit {std::move(name8bit)}
-    , file {file}
+WriterGltf::WriterGltf(const Base::FileInfo& file)  // NOLINT
+    : file {file}
 {}
 
 void WriterGltf::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
 {
+    std::string utf8Name = file.filePath();
+    std::string name8bit = Part::encodeFilename(utf8Name);
+
 #if OCC_VERSION_HEX >= 0x070500
     TColStd_IndexedDataMapOfStringString aMetadata;
     RWGltf_CafWriter aWriter(name8bit.c_str(), file.hasExtension("glb"));
@@ -57,9 +59,7 @@ void WriterGltf::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
 #endif
     Standard_Boolean ret = aWriter.Perform(hDoc, aMetadata, Message_ProgressRange());
     if (!ret) {
-        std::stringstream str;
-        str << "Cannot save to file '"
-            << "" << file.filePath() << "'";
+        throw Base::FileException("Cannot save to file: ", file);
     }
 #else
     throw Base::RuntimeError("gITF support requires OCCT 7.5.0 or later");
diff --git a/src/Mod/Import/App/WriterGltf.h b/src/Mod/Import/App/WriterGltf.h
index 8ab4cba5e4..d7ebcf89ea 100644
--- a/src/Mod/Import/App/WriterGltf.h
+++ b/src/Mod/Import/App/WriterGltf.h
@@ -34,12 +34,11 @@ namespace Import
 class ImportExport WriterGltf
 {
 public:
-    WriterGltf(std::string name8bit, const Base::FileInfo& file);
+    explicit WriterGltf(const Base::FileInfo& file);
 
     void write(Handle(TDocStd_Document) hDoc) const;
 
 private:
-    std::string name8bit;
     Base::FileInfo file;
 };
 }  // namespace Import
diff --git a/src/Mod/Import/App/WriterIges.cpp b/src/Mod/Import/App/WriterIges.cpp
index d77ca1e161..37fe3e367f 100644
--- a/src/Mod/Import/App/WriterIges.cpp
+++ b/src/Mod/Import/App/WriterIges.cpp
@@ -34,6 +34,7 @@
 #include "WriterIges.h"
 #include <Base/Exception.h>
 #include <App/Application.h>
+#include <Mod/Part/App/encodeFilename.h>
 #include <Mod/Part/App/Interface.h>
 
 using namespace Import;
@@ -44,6 +45,9 @@ WriterIges::WriterIges(const Base::FileInfo& file)  // NOLINT
 
 void WriterIges::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
 {
+    std::string utf8Name = file.filePath();
+    std::string name8bit = Part::encodeFilename(utf8Name);
+
     IGESControl_Controller::Init();
     IGESCAFControl_Writer writer;
     IGESData_GlobalSection header = writer.Model()->GlobalSection();
@@ -54,7 +58,6 @@ void WriterIges::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
     writer.Transfer(hDoc);
     Standard_Boolean ret = writer.Write(name8bit.c_str());
     if (!ret) {
-        std::string utf8Name = file.filePath();
-        throw Base::FileException("Cannot open file '%s'", utf8Name.c_str());
+        throw Base::FileException("Cannot open file: ", file);
     }
 }
diff --git a/src/Mod/Import/App/WriterIges.h b/src/Mod/Import/App/WriterIges.h
index 082d0455b0..4b485eafee 100644
--- a/src/Mod/Import/App/WriterIges.h
+++ b/src/Mod/Import/App/WriterIges.h
@@ -34,12 +34,11 @@ namespace Import
 class ImportExport WriterIges
 {
 public:
-    WriterIges(const Base::FileInfo& file);
+    explicit WriterIges(const Base::FileInfo& file);
 
     void write(Handle(TDocStd_Document) hDoc) const;
 
 private:
-    std::string name8bit;
     Base::FileInfo file;
 };
 }  // namespace Import
diff --git a/src/Mod/Import/App/WriterStep.cpp b/src/Mod/Import/App/WriterStep.cpp
index e5e94add37..31165b2cd2 100644
--- a/src/Mod/Import/App/WriterStep.cpp
+++ b/src/Mod/Import/App/WriterStep.cpp
@@ -32,6 +32,7 @@
 #include "WriterStep.h"
 #include <Base/Exception.h>
 #include <App/Application.h>
+#include <Mod/Part/App/encodeFilename.h>
 #include <Mod/Part/App/Interface.h>
 
 using namespace Import;
@@ -42,6 +43,9 @@ WriterStep::WriterStep(const Base::FileInfo& file)  // NOLINT
 
 void WriterStep::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
 {
+    std::string utf8Name = file.filePath();
+    std::string name8bit = Part::encodeFilename(utf8Name);
+
     STEPCAFControl_Writer writer;
     Part::Interface::writeStepAssembly(Part::Interface::Assembly::On);
     writer.Transfer(hDoc, STEPControl_AsIs);
@@ -67,7 +71,6 @@ void WriterStep::write(Handle(TDocStd_Document) hDoc) const  // NOLINT
     makeHeader.SetDescriptionValue(1, new TCollection_HAsciiString("FreeCAD Model"));
     IFSelect_ReturnStatus ret = writer.Write(name8bit.c_str());
     if (ret == IFSelect_RetError || ret == IFSelect_RetFail || ret == IFSelect_RetStop) {
-        std::string utf8Name = file.filePath();
-        throw Base::FileException("Cannot open file '%s'", utf8Name.c_str());
+        throw Base::FileException("Cannot open file: ", file);
     }
 }
diff --git a/src/Mod/Import/App/WriterStep.h b/src/Mod/Import/App/WriterStep.h
index b709855d1b..1e7c32d258 100644
--- a/src/Mod/Import/App/WriterStep.h
+++ b/src/Mod/Import/App/WriterStep.h
@@ -34,12 +34,11 @@ namespace Import
 class ImportExport WriterStep
 {
 public:
-    WriterStep(const Base::FileInfo& file);
+    explicit WriterStep(const Base::FileInfo& file);
 
     void write(Handle(TDocStd_Document) hDoc) const;
 
 private:
-    std::string name8bit;
     Base::FileInfo file;
 };
 }  // namespace Import
diff --git a/src/Mod/Import/Gui/AppImportGuiPy.cpp b/src/Mod/Import/Gui/AppImportGuiPy.cpp
index 266b858c46..515a8425b5 100644
--- a/src/Mod/Import/Gui/AppImportGuiPy.cpp
+++ b/src/Mod/Import/Gui/AppImportGuiPy.cpp
@@ -588,7 +588,6 @@ private:
 
         std::string Utf8Name = std::string(Name);
         PyMem_Free(Name);
-        std::string name8bit = Part::encodeFilename(Utf8Name);
 
         // determine export options
         Part::OCAF::ImportExportSettings settings;
@@ -680,7 +679,7 @@ private:
                 writer.write(hDoc);
             }
             else if (file.hasExtension({"glb", "gltf"})) {
-                Import::WriterGltf writer(name8bit, file);
+                Import::WriterGltf writer(file);
                 writer.write(hDoc);
             }