Cleaned up the thumbnails by switching to .png

src/documents/migrations/0012_auto_20160305_0040.py

@@ -65,17 +65,18 @@ def move_documents_and_create_thumbnails(apps, schema_editor):
 
         subprocess.Popen((
             settings.CONVERT_BINARY,
-            "-scale", "500x500",
+            "-scale", "500x5000",
+            "-alpha", "remove",
             orig_target,
-            os.path.join(thumb_temp, "convert-%04d.jpg")
+            os.path.join(thumb_temp, "convert-%04d.png")
         )).wait()
 
-        thumb_source = os.path.join(thumb_temp, "convert-0000.jpg")
+        thumb_source = os.path.join(thumb_temp, "convert-0000.png")
         thumb_target = os.path.join(
             settings.MEDIA_ROOT,
             "documents",
             "thumbnails",
-            re.sub(r"(\d+)\.\w+(\.gpg)", "\\1.jpg\\2", f)
+            re.sub(r"(\d+)\.\w+(\.gpg)", "\\1.png\\2", f)
         )
         with open(thumb_source, "rb") as unencrypted:
             with open(thumb_target, "wb") as encrypted:

src/documents/models.py

@@ -193,7 +193,7 @@ class Document(models.Model):
             settings.MEDIA_ROOT,
             "documents",
             "thumbnails",
-            "{:07}.jpg.gpg".format(self.pk)
+            "{:07}.png.gpg".format(self.pk)
         )
 
     @property

src/documents/views.py

@@ -29,7 +29,7 @@ class IndexView(TemplateView):
         return TemplateView.get_context_data(self, **kwargs)
 
 
-class FetchView(LoginRequiredMixin, DetailView):
+class FetchView(DetailView):
 
     model = Document
 
@@ -48,8 +48,8 @@ class FetchView(LoginRequiredMixin, DetailView):
 
         if self.kwargs["kind"] == "thumb":
             return HttpResponse(
-                GnuPG.decrypted(self.object.thumb_file),
-                content_type=content_types[Document.TYPE_JPG]
+                GnuPG.decrypted(self.object.thumbnail_file),
+                content_type=content_types[Document.TYPE_PNG]
             )
 
         response = HttpResponse(