diff --git a/nbconvert/exporters/qt_exporter.py b/nbconvert/exporters/qt_exporter.py
index 658327c6e..cd4fefaa1 100644
--- a/nbconvert/exporters/qt_exporter.py
+++ b/nbconvert/exporters/qt_exporter.py
@@ -2,7 +2,6 @@
 import sys
 import tempfile
 
-from jupyter_core.paths import jupyter_path
 from traitlets import default
 
 from .html import HTMLExporter
@@ -12,27 +11,14 @@ class QtExporter(HTMLExporter):
 
     paginate = None
 
-    def __init__(self, *args, **kwargs):
-        self.format = self.output_mimetype.split("/")[-1]
-        super().__init__(*args, **kwargs)
-
     @default("file_extension")
     def _file_extension_default(self):
-        return "." + self.format
-
-    @default("template_name")
-    def _template_name_default(self):
-        return "qt" + self.format
-
-    @default("template_data_paths")
-    def _template_data_paths_default(self):
-        return jupyter_path("nbconvert", "templates", "qt" + self.format)
+        return ".html"
 
     def _check_launch_reqs(self):
         if sys.platform.startswith("win") and self.format == "png":
             raise RuntimeError("Exporting to PNG using Qt is currently not supported on Windows.")
         from .qt_screenshot import QT_INSTALLED
-
         if not QT_INSTALLED:
             raise RuntimeError(
                 f"PyQtWebEngine is not installed to support Qt {self.format.upper()} conversion. "
@@ -42,15 +28,12 @@ def _check_launch_reqs(self):
 
         return QtScreenshot
 
-    def run_pyqtwebengine(self, html):
-        """Run pyqtwebengine."""
-
+    def _run_pyqtwebengine(self, html):
         ext = ".html"
         temp_file = tempfile.NamedTemporaryFile(suffix=ext, delete=False)
         filename = f"{temp_file.name[:-len(ext)]}.{self.format}"
         with temp_file:
             temp_file.write(html.encode("utf-8"))
-
         try:
             QtScreenshot = self._check_launch_reqs()
             s = QtScreenshot()
@@ -65,7 +48,7 @@ def from_notebook_node(self, nb, resources=None, **kw):
         html, resources = super().from_notebook_node(nb, resources=resources, **kw)
 
         self.log.info(f"Building {self.format.upper()}")
-        data = self.run_pyqtwebengine(html)
+        data = self._run_pyqtwebengine(html)
         self.log.info(f"{self.format.upper()} successfully created")
 
         # convert output extension
diff --git a/nbconvert/exporters/qtpdf.py b/nbconvert/exporters/qtpdf.py
index 0c2b8bfe9..738a9f701 100644
--- a/nbconvert/exporters/qtpdf.py
+++ b/nbconvert/exporters/qtpdf.py
@@ -16,6 +16,7 @@ class QtPDFExporter(QtExporter):
     """
 
     export_from_notebook = "PDF via HTML"
+    format = "pdf"
 
     paginate = Bool(
         True,
@@ -27,5 +28,3 @@ class QtPDFExporter(QtExporter):
         Set to True to match behavior of LaTeX based PDF generator
         """,
     ).tag(config=True)
-
-    output_mimetype = "application/pdf"
diff --git a/nbconvert/exporters/qtpng.py b/nbconvert/exporters/qtpng.py
index 20b90b6da..d506a432b 100644
--- a/nbconvert/exporters/qtpng.py
+++ b/nbconvert/exporters/qtpng.py
@@ -14,5 +14,4 @@ class QtPNGExporter(QtExporter):
     """
 
     export_from_notebook = "PNG via HTML"
-
-    output_mimetype = "image/png"
+    format = "png"
diff --git a/nbconvert/exporters/webpdf.py b/nbconvert/exporters/webpdf.py
index dfc99077c..a95648575 100644
--- a/nbconvert/exporters/webpdf.py
+++ b/nbconvert/exporters/webpdf.py
@@ -38,8 +38,6 @@ class WebPDFExporter(HTMLExporter):
         """,
     ).tag(config=True)
 
-    output_mimetype = "text/html"
-
     @default("file_extension")
     def _file_extension_default(self):
         return ".html"
diff --git a/share/templates/qtpdf/conf.json b/share/templates/qtpdf/conf.json
deleted file mode 100644
index 66e95837a..000000000
--- a/share/templates/qtpdf/conf.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "base_template": "lab",
-  "mimetypes": {
-    "application/pdf": true
-  }
-}
diff --git a/share/templates/qtpdf/index.pdf.j2 b/share/templates/qtpdf/index.pdf.j2
deleted file mode 100644
index 047c0dcce..000000000
--- a/share/templates/qtpdf/index.pdf.j2
+++ /dev/null
@@ -1 +0,0 @@
-{%- extends 'lab/index.html.j2' -%}
diff --git a/share/templates/qtpng/conf.json b/share/templates/qtpng/conf.json
deleted file mode 100644
index b3ae45a9e..000000000
--- a/share/templates/qtpng/conf.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "base_template": "lab",
-  "mimetypes": {
-    "image/png": true
-  }
-}
diff --git a/share/templates/qtpng/index.png.j2 b/share/templates/qtpng/index.png.j2
deleted file mode 100644
index 047c0dcce..000000000
--- a/share/templates/qtpng/index.png.j2
+++ /dev/null
@@ -1 +0,0 @@
-{%- extends 'lab/index.html.j2' -%}