diff --git a/webapp_welcome_profile.py b/webapp_welcome_profile.py
index 950c981c0..81fc21d22 100644
--- a/webapp_welcome_profile.py
+++ b/webapp_welcome_profile.py
@@ -34,100 +34,102 @@ def html_welcome_profile(base_dir: str, nickname: str, domain: str,
             copyfile(base_dir + '/accounts/welcome-background-custom.jpg',
                      base_dir + '/accounts/welcome-background.jpg')
 
-    profileText = 'Welcome to Epicyon'
-    profileFilename = base_dir + '/accounts/welcome_profile.md'
-    if not os.path.isfile(profileFilename):
-        defaultFilename = None
+    profile_text = 'Welcome to Epicyon'
+    profile_filename = base_dir + '/accounts/welcome_profile.md'
+    if not os.path.isfile(profile_filename):
+        default_filename = None
         if theme_name:
-            defaultFilename = \
+            default_filename = \
                 base_dir + '/theme/' + theme_name + '/welcome/' + \
                 'profile_' + language + '.md'
-            if not os.path.isfile(defaultFilename):
-                defaultFilename = None
-        if not defaultFilename:
-            defaultFilename = \
+            if not os.path.isfile(default_filename):
+                default_filename = None
+        if not default_filename:
+            default_filename = \
                 base_dir + '/defaultwelcome/profile_' + language + '.md'
-        if not os.path.isfile(defaultFilename):
-            defaultFilename = base_dir + '/defaultwelcome/profile_en.md'
-        copyfile(defaultFilename, profileFilename)
+        if not os.path.isfile(default_filename):
+            default_filename = base_dir + '/defaultwelcome/profile_en.md'
+        copyfile(default_filename, profile_filename)
 
-    instanceTitle = \
+    instance_title = \
         get_config_param(base_dir, 'instanceTitle')
-    if not instanceTitle:
-        instanceTitle = 'Epicyon'
+    if not instance_title:
+        instance_title = 'Epicyon'
 
-    if os.path.isfile(profileFilename):
-        with open(profileFilename, 'r') as profileFile:
-            profileText = profileFile.read()
-            profileText = profileText.replace('INSTANCE', instanceTitle)
-            profileText = markdown_to_html(remove_html(profileText))
+    if os.path.isfile(profile_filename):
+        with open(profile_filename, 'r') as fp_pro:
+            profile_text = fp_pro.read()
+            profile_text = profile_text.replace('INSTANCE', instance_title)
+            profile_text = markdown_to_html(remove_html(profile_text))
 
-    profileForm = ''
+    profile_form = ''
     css_filename = base_dir + '/epicyon-welcome.css'
     if os.path.isfile(base_dir + '/welcome.css'):
         css_filename = base_dir + '/welcome.css'
 
-    profileForm = \
-        html_header_with_external_style(css_filename, instanceTitle, None)
+    profile_form = \
+        html_header_with_external_style(css_filename, instance_title, None)
 
     # get the url of the avatar
+    ext = 'png'
     for ext in get_image_extensions():
-        avatarFilename = \
+        avatar_filename = \
             acct_dir(base_dir, nickname, domain) + '/avatar.' + ext
-        if os.path.isfile(avatarFilename):
+        if os.path.isfile(avatar_filename):
             break
-    avatarUrl = \
-        local_actor_url(http_prefix, nickname, domain_full) + '/avatar.' + ext
+    avatar_url = \
+        local_actor_url(http_prefix, nickname, domain_full) + \
+        '/avatar.' + ext
 
-    imageFormats = get_image_formats()
-    profileForm += '<div class="container">' + profileText + '</div>\n'
-    profileForm += \
+    image_formats = get_image_formats()
+    profile_form += '<div class="container">' + profile_text + '</div>\n'
+    profile_form += \
         '<form enctype="multipart/form-data" method="POST" ' + \
         'accept-charset="UTF-8" ' + \
         'action="/users/' + nickname + '/profiledata">\n'
-    profileForm += '<div class="container">\n'
-    profileForm += '  <center>\n'
-    profileForm += '    <img class="welcomeavatar" src="'
-    profileForm += avatarUrl + '"><br>\n'
-    profileForm += '    <input type="file" id="avatar" name="avatar" '
-    profileForm += 'accept="' + imageFormats + '">\n'
-    profileForm += '  </center>\n'
-    profileForm += '</div>\n'
+    profile_form += '<div class="container">\n'
+    profile_form += '  <center>\n'
+    profile_form += '    <img class="welcomeavatar" src="'
+    profile_form += avatar_url + '"><br>\n'
+    profile_form += '    <input type="file" id="avatar" name="avatar" '
+    profile_form += 'accept="' + image_formats + '">\n'
+    profile_form += '  </center>\n'
+    profile_form += '</div>\n'
 
-    profileForm += '<center>\n'
-    profileForm += \
+    profile_form += '<center>\n'
+    profile_form += \
         '  <button type="submit" class="button" ' + \
         'name="previewAvatar">' + translate['Preview'] + '</button> '
-    profileForm += '</center>\n'
+    profile_form += '</center>\n'
 
-    actorFilename = acct_dir(base_dir, nickname, domain) + '.json'
-    actor_json = load_json(actorFilename)
-    displayNickname = actor_json['name']
-    profileForm += '<div class="container">\n'
-    profileForm += \
+    actor_filename = acct_dir(base_dir, nickname, domain) + '.json'
+    actor_json = load_json(actor_filename)
+    display_nickname = actor_json['name']
+    profile_form += '<div class="container">\n'
+    profile_form += \
         edit_text_field(translate['Nickname'], 'displayNickname',
-                        displayNickname)
+                        display_nickname)
 
-    bioStr = \
+    bio_str = \
         actor_json['summary'].replace('<p>', '').replace('</p>', '')
-    if not bioStr:
-        bioStr = translate['Your bio']
-    profileForm += '  <label class="labels">' + \
+    if not bio_str:
+        bio_str = translate['Your bio']
+    profile_form += '  <label class="labels">' + \
         translate['Your bio'] + '</label><br>\n'
-    profileForm += '  <textarea id="message" name="bio" ' + \
+    profile_form += '  <textarea id="message" name="bio" ' + \
         'style="height:130px" spellcheck="true">' + \
-        bioStr + '</textarea>\n'
-    profileForm += '</div>\n'
+        bio_str + '</textarea>\n'
+    profile_form += '</div>\n'
 
-    profileForm += '<div class="container next">\n'
-    profileForm += \
+    profile_form += '<div class="container next">\n'
+    profile_form += \
         '    <button type="submit" class="button" ' + \
         'name="initialWelcomeScreen">' + translate['Go Back'] + '</button> '
-    profileForm += \
+    profile_form += \
         '    <button type="submit" class="button" ' + \
         'name="finalWelcomeScreen">' + translate['Next'] + '</button>\n'
-    profileForm += '</div>\n'
+    profile_form += '</div>\n'
 
-    profileForm += '</form>\n'
-    profileForm += html_footer()
-    return profileForm
+    profile_form += '</form>\n'
+    profile_form += html_footer()
+    return profile_form