diff --git a/gallery_dl/downloader/http.py b/gallery_dl/downloader/http.py
index bf8b3cbd..a929c2b4 100644
--- a/gallery_dl/downloader/http.py
+++ b/gallery_dl/downloader/http.py
@@ -114,7 +114,7 @@ class HttpDownloader(DownloaderBase):
             size = text.parse_int(size)
 
             # set missing filename extension
-            if not pathfmt.has_extension:
+            if not pathfmt.extension:
                 pathfmt.set_extension(self.get_extension(response))
                 if pathfmt.exists():
                     pathfmt.temppath = ""
@@ -153,7 +153,7 @@ class HttpDownloader(DownloaderBase):
 
                 # check filename extension
                 if self.adjust_extension:
-                    adj_ext = self.check_extension(file, pathfmt)
+                    adj_ext = self.check_extension(file, pathfmt.extension)
                     if adj_ext:
                         pathfmt.set_extension(adj_ext)
 
@@ -161,7 +161,7 @@ class HttpDownloader(DownloaderBase):
 
         self.downloading = False
         if self.mtime:
-            pathfmt.keywords["_mtime"] = response.headers.get("Last-Modified")
+            pathfmt.kwdict["_mtime"] = response.headers.get("Last-Modified")
         return True
 
     def receive(self, response, file):
@@ -197,9 +197,8 @@ class HttpDownloader(DownloaderBase):
         return "txt"
 
     @staticmethod
-    def check_extension(file, pathfmt):
+    def check_extension(file, extension):
         """Check filename extension against fileheader"""
-        extension = pathfmt.keywords["extension"]
         if extension in FILETYPE_CHECK:
             file.seek(0)
             header = file.read(8)
diff --git a/gallery_dl/downloader/ytdl.py b/gallery_dl/downloader/ytdl.py
index a2334873..7d8b905a 100644
--- a/gallery_dl/downloader/ytdl.py
+++ b/gallery_dl/downloader/ytdl.py
@@ -50,7 +50,7 @@ class YoutubeDLDownloader(DownloaderBase):
             return False
 
         if "entries" in info_dict:
-            index = pathfmt.keywords.get("_ytdl_index")
+            index = pathfmt.kwdict.get("_ytdl_index")
             if index is None:
                 return self._download_playlist(pathfmt, info_dict)
             else:
@@ -59,7 +59,7 @@ class YoutubeDLDownloader(DownloaderBase):
 
     def _download_video(self, pathfmt, info_dict):
         if "url" in info_dict:
-            text.nameext_from_url(info_dict["url"], pathfmt.keywords)
+            text.nameext_from_url(info_dict["url"], pathfmt.kwdict)
         pathfmt.set_extension(info_dict["ext"])
         if pathfmt.exists():
             pathfmt.temppath = ""
diff --git a/gallery_dl/job.py b/gallery_dl/job.py
index be88c4ab..1d7c5fcb 100644
--- a/gallery_dl/job.py
+++ b/gallery_dl/job.py
@@ -196,7 +196,7 @@ class DownloadJob(Job):
         archive = self.archive
 
         # prepare download
-        pathfmt.set_keywords(keywords)
+        pathfmt.set_filename(keywords)
 
         if postprocessors:
             for pp in postprocessors:
@@ -364,7 +364,7 @@ class SimulationJob(DownloadJob):
     """Simulate the extraction process without downloading anything"""
 
     def handle_url(self, url, keywords, fallback=None):
-        self.pathfmt.set_keywords(keywords)
+        self.pathfmt.set_filename(keywords)
         self.out.skip(self.pathfmt.path)
         if self.sleep:
             time.sleep(self.sleep)
diff --git a/gallery_dl/postprocessor/classify.py b/gallery_dl/postprocessor/classify.py
index 62460d37..c0ab59c2 100644
--- a/gallery_dl/postprocessor/classify.py
+++ b/gallery_dl/postprocessor/classify.py
@@ -33,7 +33,7 @@ class ClassifyPP(PostProcessor):
         }
 
     def prepare(self, pathfmt):
-        ext = pathfmt.keywords.get("extension")
+        ext = pathfmt.extension
 
         if ext in self.mapping:
             self._dir = pathfmt.realdirectory + os.sep + self.mapping[ext]
diff --git a/gallery_dl/postprocessor/metadata.py b/gallery_dl/postprocessor/metadata.py
index 77be9c7c..467ef112 100644
--- a/gallery_dl/postprocessor/metadata.py
+++ b/gallery_dl/postprocessor/metadata.py
@@ -36,15 +36,14 @@ class MetadataPP(PostProcessor):
     def run(self, pathfmt):
         path = "{}.{}".format(pathfmt.realpath, self.extension)
         with open(path, "w", encoding="utf-8") as file:
-            self.write(file, pathfmt)
+            self.write(file, pathfmt.kwdict)
 
-    def _write_custom(self, file, pathfmt):
-        output = self.formatter.format_map(pathfmt.keywords)
+    def _write_custom(self, file, kwdict):
+        output = self.formatter.format_map(kwdict)
         file.write(output)
 
-    def _write_tags(self, file, pathfmt):
-        kwds = pathfmt.keywords
-        tags = kwds.get("tags") or kwds.get("tag_string")
+    def _write_tags(self, file, kwdict):
+        tags = kwdict.get("tags") or kwdict.get("tag_string")
 
         if not tags:
             return
@@ -58,8 +57,8 @@ class MetadataPP(PostProcessor):
         file.write("\n".join(tags))
         file.write("\n")
 
-    def _write_json(self, file, pathfmt):
-        util.dump_json(pathfmt.keywords, file, self.ascii, self.indent)
+    def _write_json(self, file, kwdict):
+        util.dump_json(kwdict, file, self.ascii, self.indent)
 
 
 __postprocessor__ = MetadataPP
diff --git a/gallery_dl/postprocessor/mtime.py b/gallery_dl/postprocessor/mtime.py
index 03d2f114..7065428e 100644
--- a/gallery_dl/postprocessor/mtime.py
+++ b/gallery_dl/postprocessor/mtime.py
@@ -19,9 +19,9 @@ class MtimePP(PostProcessor):
         self.key = options.get("key", "date")
 
     def run(self, pathfmt):
-        mtime = pathfmt.keywords.get(self.key)
+        mtime = pathfmt.kwdict.get(self.key)
         ts = getattr(mtime, "timestamp", None)
-        pathfmt.keywords["_mtime"] = ts() if ts else parse_int(mtime)
+        pathfmt.kwdict["_mtime"] = ts() if ts else parse_int(mtime)
 
 
 __postprocessor__ = MtimePP
diff --git a/gallery_dl/postprocessor/ugoira.py b/gallery_dl/postprocessor/ugoira.py
index bd8c5adc..0dbb7966 100644
--- a/gallery_dl/postprocessor/ugoira.py
+++ b/gallery_dl/postprocessor/ugoira.py
@@ -52,13 +52,13 @@ class UgoiraPP(PostProcessor):
     def prepare(self, pathfmt):
         self._frames = None
 
-        if pathfmt.keywords["extension"] != "zip":
+        if pathfmt.extension != "zip":
             return
 
-        if "frames" in pathfmt.keywords:
-            self._frames = pathfmt.keywords["frames"]
-        elif "pixiv_ugoira_frame_data" in pathfmt.keywords:
-            self._frames = pathfmt.keywords["pixiv_ugoira_frame_data"]["data"]
+        if "frames" in pathfmt.kwdict:
+            self._frames = pathfmt.kwdict["frames"]
+        elif "pixiv_ugoira_frame_data" in pathfmt.kwdict:
+            self._frames = pathfmt.kwdict["pixiv_ugoira_frame_data"]["data"]
         else:
             return
 
diff --git a/gallery_dl/util.py b/gallery_dl/util.py
index 33c0cb76..6c984d6a 100644
--- a/gallery_dl/util.py
+++ b/gallery_dl/util.py
@@ -523,13 +523,12 @@ class PathFormat():
         except Exception as exc:
             raise exception.FormatError(exc, "filename")
 
-        self.delete = False
-        self.has_extension = False
-        self.keywords = {}
-        self.filename = ""
         self.directory = self.realdirectory = ""
+        self.filename = ""
+        self.extension = ""
+        self.kwdict = {}
+        self.delete = False
         self.path = self.realpath = self.temppath = ""
-        self.suffix = ""
 
         self.basedirectory = expand_path(
             extractor.config("base-directory", (".", "gallery-dl")))
@@ -563,9 +562,9 @@ class PathFormat():
 
     def exists(self, archive=None):
         """Return True if the file exists on disk or in 'archive'"""
-        if archive and archive.check(self.keywords):
+        if archive and archive.check(self.kwdict):
             return self.fix_extension()
-        if self.has_extension and os.path.exists(self.realpath):
+        if self.extension and os.path.exists(self.realpath):
             return self.check_file()
         return False
 
@@ -576,71 +575,79 @@ class PathFormat():
     def _enum_file(self):
         num = 1
         while True:
-            suffix = "." + str(num)
-            rpath = self.realpath + suffix
-            if not os.path.exists(rpath):
-                self.path += suffix
-                self.realpath = rpath
-                self.suffix = suffix
+            self.set_extension("{}.{}".format(num, self.extension), False)
+            if not os.path.exists(self.realpath):
                 return False
             num += 1
 
-    def set_directory(self, keywords):
+    def set_directory(self, kwdict):
         """Build directory path and create it if necessary"""
+
+        # Build path segments by applying 'kwdict' to directory format strings
         try:
             segments = [
                 self.clean_path(
                     Formatter(segment, self.kwdefault)
-                    .format_map(keywords).strip())
+                    .format_map(kwdict).strip())
                 for segment in self.directory_fmt
             ]
         except Exception as exc:
             raise exception.FormatError(exc, "directory")
 
-        self.directory = os.path.join(
-            self.basedirectory,
-            *segments
-        )
+        # Join path segements
+        self.directory = os.path.join(self.basedirectory, *segments)
 
-        # remove trailing path separator;
+        # Remove trailing path separator;
         # occurs if the last argument to os.path.join() is an empty string
         if self.directory[-1] == os.sep:
             self.directory = self.directory[:-1]
 
-        self.realdirectory = self.adjust_path(self.directory)
+        # Enable longer-than-260-character paths on Windows
+        if os.name == "nt":
+            self.realdirectory = "\\\\?\\" + os.path.abspath(self.directory)
+        else:
+            self.realdirectory = self.directory
+
+        # Create directory tree
         os.makedirs(self.realdirectory, exist_ok=True)
 
-    def set_keywords(self, keywords):
-        """Set filename keywords"""
-        self.keywords = keywords
-        self.temppath = self.suffix = ""
-        self.has_extension = bool(keywords.get("extension"))
-        if self.has_extension:
+    def set_filename(self, kwdict):
+        """Set general filename data"""
+        self.kwdict = kwdict
+        self.temppath = ""
+        self.extension = kwdict["extension"]
+
+        if self.extension:
             self.build_path()
 
     def set_extension(self, extension, real=True):
-        """Set the 'extension' keyword"""
-        self.has_extension = real
-        self.keywords["extension"] = extension
+        """Set filename extension"""
+        if real:
+            self.extension = extension
+        self.kwdict["extension"] = extension
         self.build_path()
 
     def fix_extension(self, _=None):
-        if not self.has_extension:
-            self.set_extension("")
+        """Fix filenames without a given filename extension"""
+        if not self.extension:
+            self.set_extension("", False)
             if self.path[-1] == ".":
                 self.path = self.path[:-1]
                 self.temppath = self.realpath = self.realpath[:-1]
         return True
 
     def build_path(self):
-        """Use filename-keywords and directory to build a full path"""
+        """Use filename metadata and directory to build a full path"""
+
+        # Apply 'kwdict' to filename format string
         try:
             self.filename = self.clean_path(
-                self.formatter.format_map(self.keywords))
+                self.formatter.format_map(self.kwdict))
         except Exception as exc:
             raise exception.FormatError(exc, "filename")
 
-        filename = os.sep + self.filename + self.suffix
+        # Combine directory and filename to full paths
+        filename = os.sep + self.filename
         self.path = self.directory + filename
         self.realpath = self.realdirectory + filename
         if not self.temppath:
@@ -648,7 +655,7 @@ class PathFormat():
 
     def part_enable(self, part_directory=None):
         """Enable .part file usage"""
-        if self.has_extension:
+        if self.extension:
             self.temppath += ".part"
         else:
             self.set_extension("part", False)
@@ -674,16 +681,16 @@ class PathFormat():
             return
 
         if self.temppath != self.realpath:
-            # move temp file to its actual location
+            # Move temp file to its actual location
             try:
                 os.replace(self.temppath, self.realpath)
             except OSError:
                 shutil.copyfile(self.temppath, self.realpath)
                 os.unlink(self.temppath)
 
-        if "_mtime" in self.keywords:
-            # set file modification time
-            mtime = self.keywords["_mtime"]
+        if "_mtime" in self.kwdict:
+            # Set file modification time
+            mtime = self.kwdict["_mtime"]
             if mtime:
                 try:
                     if isinstance(mtime, str):
@@ -692,11 +699,6 @@ class PathFormat():
                 except Exception:
                     pass
 
-    @staticmethod
-    def adjust_path(path):
-        """Enable longer-than-260-character paths on windows"""
-        return "\\\\?\\" + os.path.abspath(path) if os.name == "nt" else path
-
 
 class DownloadArchive():
 
diff --git a/test/test_downloader.py b/test/test_downloader.py
index caed9838..0f58d4e9 100644
--- a/test/test_downloader.py
+++ b/test/test_downloader.py
@@ -120,7 +120,7 @@ class TestDownloaderBase(unittest.TestCase):
         }
         pathfmt = PathFormat(cls.extractor)
         pathfmt.set_directory(kwdict)
-        pathfmt.set_keywords(kwdict)
+        pathfmt.set_filename(kwdict)
 
         if content:
             mode = "w" + ("b" if isinstance(content, bytes) else "")
@@ -145,7 +145,7 @@ class TestDownloaderBase(unittest.TestCase):
 
         # test filename extension
         self.assertEqual(
-            pathfmt.keywords["extension"],
+            pathfmt.extension,
             expected_extension,
         )
         self.assertEqual(
diff --git a/test/test_results.py b/test/test_results.py
index c555f3e6..af16e567 100644
--- a/test/test_results.py
+++ b/test/test_results.py
@@ -218,8 +218,8 @@ class TestPathfmt():
         self.hashobj = hashobj
         self.path = ""
         self.size = 0
-        self.keywords = {}
-        self.has_extension = True
+        self.kwdict = {}
+        self.extension = "jpg"
 
     def __enter__(self):
         return self