diff --git a/blog.py b/blog.py
index 273d531d9..30b36f404 100644
--- a/blog.py
+++ b/blog.py
@@ -32,7 +32,6 @@ from utils import is_account_dir
 from utils import remove_html
 from utils import get_config_param
 from utils import get_full_domain
-from utils import get_media_formats
 from utils import get_nickname_from_actor
 from utils import get_domain_from_actor
 from utils import locate_post
@@ -41,6 +40,7 @@ from utils import first_paragraph_from_string
 from utils import get_actor_property_url
 from utils import acct_dir
 from utils import escape_text
+from formats import get_media_formats
 from posts import create_blogs_timeline
 from newswire import rss2header
 from newswire import rss2footer
diff --git a/cache.py b/cache.py
index 48ceec02f..1566e2b6c 100644
--- a/cache.py
+++ b/cache.py
@@ -26,7 +26,7 @@ from utils import load_json
 from utils import save_json
 from utils import get_file_case_insensitive
 from utils import get_user_paths
-from utils import get_image_extensions
+from formats import get_image_extensions
 from timeFunctions import date_from_string_format
 from timeFunctions import date_utcnow
 from content import remove_script
diff --git a/content.py b/content.py
index b78098957..a57e40724 100644
--- a/content.py
+++ b/content.py
@@ -36,7 +36,6 @@ from utils import has_object_dict
 from utils import valid_hash_tag
 from utils import dangerous_svg
 from utils import remove_domain_port
-from utils import get_image_extensions
 from utils import load_json
 from utils import save_json
 from utils import file_last_modified
@@ -46,6 +45,7 @@ from utils import acct_dir
 from utils import get_currencies
 from utils import remove_html
 from utils import remove_eol
+from formats import get_image_extensions
 from petnames import get_pet_name
 from session import download_image
 
diff --git a/daemon_get_images.py b/daemon_get_images.py
index fa321cfba..d95f72f21 100644
--- a/daemon_get_images.py
+++ b/daemon_get_images.py
@@ -21,9 +21,9 @@ from httpheaders import set_headers_etag
 from utils import data_dir
 from utils import get_nickname_from_actor
 from utils import media_file_mime_type
-from utils import get_image_mime_type
-from utils import get_image_extensions
 from utils import acct_dir
+from formats import get_image_mime_type
+from formats import get_image_extensions
 from flags import is_image_file
 from daemon_utils import etag_exists
 from fitnessFunctions import fitness_performance
diff --git a/daemon_post_image.py b/daemon_post_image.py
index b7c2d8f87..e7e7469d0 100644
--- a/daemon_post_image.py
+++ b/daemon_post_image.py
@@ -12,8 +12,8 @@ import errno
 from socket import error as SocketError
 from httpcodes import http_404
 from utils import acct_dir
-from utils import get_image_extension_from_mime_type
 from utils import binary_is_image
+from formats import get_image_extension_from_mime_type
 
 
 def receive_image_attachment(self, length: int, path: str, base_dir: str,
diff --git a/flags.py b/flags.py
index 18a61033a..4d40ad0c9 100644
--- a/flags.py
+++ b/flags.py
@@ -18,7 +18,6 @@ from utils import get_domain_from_actor
 from utils import acct_dir
 from utils import data_dir
 from utils import get_config_param
-from utils import get_image_extensions
 from utils import evil_incarnate
 from utils import get_local_network_addresses
 from utils import get_attributed_to
@@ -30,6 +29,7 @@ from utils import has_object_string_type
 from utils import get_reply_to
 from utils import text_in_file
 from utils import get_group_paths
+from formats import get_image_extensions
 from quote import get_quote_toot_url
 
 
diff --git a/formats.py b/formats.py
new file mode 100644
index 000000000..458a02a80
--- /dev/null
+++ b/formats.py
@@ -0,0 +1,109 @@
+__filename__ = "formats.py"
+__author__ = "Bob Mottram"
+__license__ = "AGPL3+"
+__version__ = "1.6.0"
+__maintainer__ = "Bob Mottram"
+__email__ = "bob@libreserver.org"
+__status__ = "Production"
+__module_group__ = "Core"
+
+
+def get_video_extensions() -> []:
+    """Returns a list of the possible video file extensions
+    """
+    return ('mp4', 'webm', 'ogv')
+
+
+def get_audio_extensions() -> []:
+    """Returns a list of the possible audio file extensions
+    """
+    return ('mp3', 'ogg', 'flac', 'opus', 'spx', 'wav')
+
+
+def get_image_extensions() -> []:
+    """Returns a list of the possible image file extensions
+    """
+    return ('jpg', 'jpeg', 'gif', 'webp', 'avif', 'heic',
+            'svg', 'ico', 'jxl', 'png')
+
+
+def image_mime_types_dict() -> {}:
+    """Returns a dict of image mime types
+    """
+    return {
+        'png': 'png',
+        'jpg': 'jpeg',
+        'jpeg': 'jpeg',
+        'jxl': 'jxl',
+        'gif': 'gif',
+        'avif': 'avif',
+        'heic': 'heic',
+        'svg': 'svg+xml',
+        'webp': 'webp',
+        'ico': 'x-icon'
+    }
+
+
+def get_image_mime_type(image_filename: str) -> str:
+    """Returns the mime type for the given image filename
+    """
+    extensions_to_mime = image_mime_types_dict()
+    for ext, mime_ext in extensions_to_mime.items():
+        if image_filename.endswith('.' + ext):
+            return 'image/' + mime_ext
+    return 'image/png'
+
+
+def get_image_extension_from_mime_type(content_type: str) -> str:
+    """Returns the image extension from a mime type, such as image/jpeg
+    """
+    image_media = {
+        'png': 'png',
+        'jpeg': 'jpg',
+        'jxl': 'jxl',
+        'gif': 'gif',
+        'svg+xml': 'svg',
+        'webp': 'webp',
+        'avif': 'avif',
+        'heic': 'heic',
+        'x-icon': 'ico'
+    }
+    for mime_ext, ext in image_media.items():
+        if content_type.endswith(mime_ext):
+            return ext
+    return 'png'
+
+
+def get_media_extensions() -> []:
+    """Returns a list of the possible media file extensions
+    """
+    return get_image_extensions() + \
+        get_video_extensions() + get_audio_extensions()
+
+
+def get_image_formats() -> str:
+    """Returns a string of permissable image formats
+    used when selecting an image for a new post
+    """
+    image_ext = get_image_extensions()
+
+    image_formats = ''
+    for ext in image_ext:
+        if image_formats:
+            image_formats += ', '
+        image_formats += '.' + ext
+    return image_formats
+
+
+def get_media_formats() -> str:
+    """Returns a string of permissable media formats
+    used when selecting an attachment for a new post
+    """
+    media_ext = get_media_extensions()
+
+    media_formats = ''
+    for ext in media_ext:
+        if media_formats:
+            media_formats += ', '
+        media_formats += '.' + ext
+    return media_formats
diff --git a/mastoapiv2.py b/mastoapiv2.py
index c4e122688..888dd4f48 100644
--- a/mastoapiv2.py
+++ b/mastoapiv2.py
@@ -15,13 +15,13 @@ from utils import acct_dir
 from utils import remove_html
 from utils import get_attachment_property_value
 from utils import no_of_accounts
-from utils import get_image_extensions
-from utils import get_video_extensions
-from utils import get_audio_extensions
-from utils import get_image_mime_type
 from utils import lines_in_file
 from utils import data_dir
 from utils import account_is_indexable
+from formats import get_image_mime_type
+from formats import get_image_extensions
+from formats import get_audio_extensions
+from formats import get_video_extensions
 
 
 def _get_masto_api_v2id_from_nickname(nickname: str) -> int:
diff --git a/media.py b/media.py
index f7230652c..ce795ed80 100644
--- a/media.py
+++ b/media.py
@@ -20,13 +20,13 @@ from timeFunctions import date_epoch
 from utils import safe_system_string
 from utils import get_base_content_from_post
 from utils import get_full_domain
-from utils import get_image_extensions
-from utils import get_video_extensions
-from utils import get_audio_extensions
-from utils import get_media_extensions
 from utils import has_object_dict
 from utils import acct_dir
 from utils import get_watermark_file
+from formats import get_media_extensions
+from formats import get_image_extensions
+from formats import get_audio_extensions
+from formats import get_video_extensions
 from shutil import copyfile
 from shutil import rmtree
 from shutil import move
diff --git a/newswire.py b/newswire.py
index 3518e5b16..e31a7ad65 100644
--- a/newswire.py
+++ b/newswire.py
@@ -24,7 +24,6 @@ from flags import is_local_network_address
 from flags import is_public_post
 from utils import data_dir
 from utils import string_contains
-from utils import image_mime_types_dict
 from utils import resembles_url
 from utils import get_url_from_post
 from utils import remove_zero_length_strings
@@ -47,6 +46,7 @@ from utils import acct_dir
 from utils import local_actor_url
 from utils import escape_text
 from utils import unescaped_text
+from formats import image_mime_types_dict
 from timeFunctions import date_from_string_format
 from blocking import is_blocked_domain
 from blocking import is_blocked_hashtag
diff --git a/person.py b/person.py
index 6f58c3629..df001a00d 100644
--- a/person.py
+++ b/person.py
@@ -42,7 +42,6 @@ from timeFunctions import date_utcnow
 from timeFunctions import get_current_time_int
 from utils import get_person_icon
 from utils import account_is_indexable
-from utils import get_image_mime_type
 from utils import get_instance_url
 from utils import get_url_from_post
 from utils import get_memorials
@@ -67,7 +66,6 @@ from utils import get_config_param
 from utils import refresh_newswire
 from utils import get_protocol_prefixes
 from utils import has_users_path
-from utils import get_image_extensions
 from utils import acct_dir
 from utils import get_user_paths
 from utils import get_group_paths
@@ -77,6 +75,8 @@ from utils import text_in_file
 from utils import contains_statuses
 from utils import get_actor_from_post
 from utils import data_dir
+from formats import get_image_mime_type
+from formats import get_image_extensions
 from status import get_status_number
 from session import get_json_valid
 from session import create_session
diff --git a/posts.py b/posts.py
index 64c6691f4..8177177ee 100644
--- a/posts.py
+++ b/posts.py
@@ -63,7 +63,6 @@ from utils import remove_eol
 from utils import text_in_file
 from utils import get_media_descriptions_from_post
 from utils import valid_hash_tag
-from utils import get_audio_extensions
 from utils import get_summary_from_post
 from utils import get_user_paths
 from utils import has_object_string_type
@@ -97,6 +96,7 @@ from utils import local_actor_url
 from utils import get_reply_to
 from utils import get_actor_from_post
 from utils import data_dir
+from formats import get_audio_extensions
 from status import get_status_number
 from media import get_music_metadata
 from media import attach_media
diff --git a/reading.py b/reading.py
index 36283bafc..275c19257 100644
--- a/reading.py
+++ b/reading.py
@@ -19,7 +19,7 @@ from utils import get_attributed_to
 from utils import load_json
 from utils import save_json
 from utils import remove_html
-from utils import get_image_extensions
+from formats import get_image_extensions
 from timeFunctions import date_epoch
 from timeFunctions import date_from_string_format
 
diff --git a/session.py b/session.py
index c92042534..27b8a0806 100644
--- a/session.py
+++ b/session.py
@@ -18,8 +18,8 @@ from flags import url_permitted
 from utils import text_in_file
 from utils import acct_dir
 from utils import binary_is_image
-from utils import image_mime_types_dict
 from utils import get_domain_from_actor
+from formats import image_mime_types_dict
 from mitm import detect_mitm
 from httpsig import create_signed_header
 
diff --git a/shares.py b/shares.py
index 74abb5717..2c32f2ad8 100644
--- a/shares.py
+++ b/shares.py
@@ -33,7 +33,6 @@ from utils import data_dir
 from utils import resembles_url
 from utils import dangerous_markup
 from utils import remove_html
-from utils import get_media_extensions
 from utils import acct_handle_dir
 from utils import remove_eol
 from utils import has_object_string_type
@@ -42,7 +41,8 @@ from utils import get_full_domain
 from utils import valid_nickname
 from utils import load_json
 from utils import save_json
-from utils import get_image_extensions
+from formats import get_media_extensions
+from formats import get_image_extensions
 from utils import remove_domain_port
 from utils import is_account_dir
 from utils import acct_dir
diff --git a/theme.py b/theme.py
index 4d9de4cc7..8d6530607 100644
--- a/theme.py
+++ b/theme.py
@@ -17,7 +17,6 @@ from utils import string_ends_with
 from utils import is_account_dir
 from utils import load_json
 from utils import save_json
-from utils import get_image_extensions
 from utils import copytree
 from utils import acct_dir
 from utils import dangerous_svg
@@ -26,6 +25,7 @@ from utils import remove_html
 from utils import text_in_file
 from utils import remove_eol
 from utils import language_right_to_left
+from formats import get_image_extensions
 from content import dangerous_css
 from textmode import set_text_mode_theme
 
diff --git a/utils.py b/utils.py
index f69624fac..df5ca3aaa 100644
--- a/utils.py
+++ b/utils.py
@@ -21,6 +21,7 @@ from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives import hashes
 from followingCalendar import add_person_to_calendar
 from unicodetext import standardize_text
+from formats import get_image_extensions
 
 VALID_HASHTAG_CHARS = \
     set('_0123456789' +
@@ -610,107 +611,6 @@ def get_full_domain(domain: str, port: int) -> str:
     return domain + ':' + str(port)
 
 
-def get_video_extensions() -> []:
-    """Returns a list of the possible video file extensions
-    """
-    return ('mp4', 'webm', 'ogv')
-
-
-def get_audio_extensions() -> []:
-    """Returns a list of the possible audio file extensions
-    """
-    return ('mp3', 'ogg', 'flac', 'opus', 'spx', 'wav')
-
-
-def get_image_extensions() -> []:
-    """Returns a list of the possible image file extensions
-    """
-    return ('jpg', 'jpeg', 'gif', 'webp', 'avif', 'heic',
-            'svg', 'ico', 'jxl', 'png')
-
-
-def image_mime_types_dict() -> {}:
-    """Returns a dict of image mime types
-    """
-    return {
-        'png': 'png',
-        'jpg': 'jpeg',
-        'jpeg': 'jpeg',
-        'jxl': 'jxl',
-        'gif': 'gif',
-        'avif': 'avif',
-        'heic': 'heic',
-        'svg': 'svg+xml',
-        'webp': 'webp',
-        'ico': 'x-icon'
-    }
-
-
-def get_image_mime_type(image_filename: str) -> str:
-    """Returns the mime type for the given image filename
-    """
-    extensions_to_mime = image_mime_types_dict()
-    for ext, mime_ext in extensions_to_mime.items():
-        if image_filename.endswith('.' + ext):
-            return 'image/' + mime_ext
-    return 'image/png'
-
-
-def get_image_extension_from_mime_type(content_type: str) -> str:
-    """Returns the image extension from a mime type, such as image/jpeg
-    """
-    image_media = {
-        'png': 'png',
-        'jpeg': 'jpg',
-        'jxl': 'jxl',
-        'gif': 'gif',
-        'svg+xml': 'svg',
-        'webp': 'webp',
-        'avif': 'avif',
-        'heic': 'heic',
-        'x-icon': 'ico'
-    }
-    for mime_ext, ext in image_media.items():
-        if content_type.endswith(mime_ext):
-            return ext
-    return 'png'
-
-
-def get_media_extensions() -> []:
-    """Returns a list of the possible media file extensions
-    """
-    return get_image_extensions() + \
-        get_video_extensions() + get_audio_extensions()
-
-
-def get_image_formats() -> str:
-    """Returns a string of permissable image formats
-    used when selecting an image for a new post
-    """
-    image_ext = get_image_extensions()
-
-    image_formats = ''
-    for ext in image_ext:
-        if image_formats:
-            image_formats += ', '
-        image_formats += '.' + ext
-    return image_formats
-
-
-def get_media_formats() -> str:
-    """Returns a string of permissable media formats
-    used when selecting an attachment for a new post
-    """
-    media_ext = get_media_extensions()
-
-    media_formats = ''
-    for ext in media_ext:
-        if media_formats:
-            media_formats += ', '
-        media_formats += '.' + ext
-    return media_formats
-
-
 def remove_html(content: str) -> str:
     """Removes html links from the given content.
     Used to ensure that profile descriptions don't contain dubious content
diff --git a/webapp_column_right.py b/webapp_column_right.py
index 9a6d6c708..1423c361c 100644
--- a/webapp_column_right.py
+++ b/webapp_column_right.py
@@ -13,7 +13,6 @@ from content import limit_repeated_words
 from flags import is_editor
 from utils import replace_strings
 from utils import data_dir
-from utils import get_image_extensions
 from utils import get_fav_filename_from_url
 from utils import get_base_content_from_post
 from utils import remove_html
@@ -24,6 +23,7 @@ from utils import get_nickname_from_actor
 from utils import get_config_param
 from utils import remove_domain_port
 from utils import acct_dir
+from formats import get_image_extensions
 from timeFunctions import date_from_string_format
 from posts import is_moderator
 from newswire import get_newswire_favicon_url
diff --git a/webapp_create_post.py b/webapp_create_post.py
index 5b9617a30..6479a76ea 100644
--- a/webapp_create_post.py
+++ b/webapp_create_post.py
@@ -21,7 +21,6 @@ from utils import locate_post
 from utils import get_new_post_endpoints
 from utils import get_nickname_from_actor
 from utils import get_domain_from_actor
-from utils import get_media_formats
 from utils import get_config_param
 from utils import acct_dir
 from utils import get_currencies
@@ -29,6 +28,7 @@ from utils import get_category_types
 from utils import get_supported_languages
 from utils import get_attributed_to
 from utils import get_full_domain
+from formats import get_media_formats
 from timeFunctions import get_account_timezone
 from blocking import sending_is_blocked2
 from webapp_utils import open_content_warning
diff --git a/webapp_login.py b/webapp_login.py
index 60a22cad2..77617713a 100644
--- a/webapp_login.py
+++ b/webapp_login.py
@@ -12,10 +12,10 @@ import time
 import filecmp
 from shutil import copyfile
 from utils import data_dir
-from utils import get_image_extensions
 from utils import get_config_param
 from utils import no_of_accounts
 from utils import get_nickname_validation_pattern
+from formats import get_image_extensions
 from webapp_utils import set_custom_background
 from webapp_utils import html_header_with_website_markup
 from webapp_utils import html_footer
diff --git a/webapp_profile.py b/webapp_profile.py
index 018de1656..72ab08d41 100644
--- a/webapp_profile.py
+++ b/webapp_profile.py
@@ -41,7 +41,6 @@ from utils import get_domain_from_actor
 from utils import remove_html
 from utils import load_json
 from utils import get_config_param
-from utils import get_image_formats
 from utils import acct_dir
 from utils import get_supported_languages
 from utils import local_actor_url
@@ -49,6 +48,7 @@ from utils import get_reply_interval_hours
 from utils import remove_eol
 from utils import get_actor_from_post
 from utils import resembles_url
+from formats import get_image_formats
 from timeFunctions import time_days_ago
 from timeFunctions import get_account_timezone
 from languages import get_actor_languages
diff --git a/webapp_utils.py b/webapp_utils.py
index adeca5d29..9d071ff41 100644
--- a/webapp_utils.py
+++ b/webapp_utils.py
@@ -19,7 +19,6 @@ from utils import get_image_file
 from utils import data_dir
 from utils import string_contains
 from utils import get_post_attachments
-from utils import image_mime_types_dict
 from utils import get_url_from_post
 from utils import get_media_url_from_video
 from utils import get_attributed_to
@@ -37,14 +36,15 @@ from utils import get_config_param
 from utils import acct_dir
 from utils import get_nickname_from_actor
 from utils import get_domain_from_actor
-from utils import get_audio_extensions
-from utils import get_video_extensions
-from utils import get_image_extensions
 from utils import local_actor_url
 from utils import text_in_file
 from utils import remove_eol
 from utils import binary_is_image
 from utils import resembles_url
+from formats import image_mime_types_dict
+from formats import get_image_extensions
+from formats import get_audio_extensions
+from formats import get_video_extensions
 from filters import is_filtered
 from cache import get_actor_public_key_from_id
 from cache import store_person_in_cache
diff --git a/webapp_welcome_profile.py b/webapp_welcome_profile.py
index 318f9e5a8..395616503 100644
--- a/webapp_welcome_profile.py
+++ b/webapp_welcome_profile.py
@@ -14,10 +14,10 @@ from utils import data_dir
 from utils import remove_html
 from utils import load_json
 from utils import get_config_param
-from utils import get_image_extensions
-from utils import get_image_formats
 from utils import acct_dir
 from utils import local_actor_url
+from formats import get_image_formats
+from formats import get_image_extensions
 from webapp_utils import html_header_with_external_style
 from webapp_utils import html_footer
 from webapp_utils import edit_text_field