diff --git a/toot/config.py b/toot/config.py
index 8817e7f..1dd2d6f 100644
--- a/toot/config.py
+++ b/toot/config.py
@@ -17,11 +17,11 @@ def get_config_file_path():
     return join(get_config_dir(), TOOT_CONFIG_FILE_NAME)
 
 
-def user_id(user):
+def user_id(user: User):
     return "{}@{}".format(user.username, user.instance)
 
 
-def make_config(path):
+def make_config(path: str):
     """Creates an empty toot configuration file."""
     config = {
         "apps": {},
@@ -58,7 +58,7 @@ def save_config(config):
         return json.dump(config, f, indent=True, sort_keys=True)
 
 
-def extract_user_app(config, user_id):
+def extract_user_app(config, user_id: str):
     if user_id not in config['users']:
         return None, None
 
@@ -82,7 +82,7 @@ def get_active_user_app():
     return None, None
 
 
-def get_user_app(user_id):
+def get_user_app(user_id: str):
     """Returns (User, App) for given user ID or (None, None) if user is not logged in."""
     return extract_user_app(load_config(), user_id)
 
@@ -93,7 +93,7 @@ def load_app(instance: str) -> Optional[App]:
         return App(**config['apps'][instance])
 
 
-def load_user(user_id, throw=False):
+def load_user(user_id: str, throw=False):
     config = load_config()
 
     if user_id in config['users']:
@@ -120,7 +120,7 @@ def save_app(app: App):
         config['apps'][app.instance] = app._asdict()
 
 
-def delete_app(config, app):
+def delete_app(config, app: App):
     with edit_config() as config:
         config['apps'].pop(app.instance, None)
 
diff --git a/toot/utils/__init__.py b/toot/utils/__init__.py
index a367ddb..f21d425 100644
--- a/toot/utils/__init__.py
+++ b/toot/utils/__init__.py
@@ -1,26 +1,22 @@
+import click
 import os
 import re
-import socket
 import subprocess
 import tempfile
 import unicodedata
 import warnings
 
 from bs4 import BeautifulSoup
-from typing import Any, Dict, List
-
-import click
-
-from toot.exceptions import ConsoleError
+from typing import Any, Dict, Generator, List, Optional
 from urllib.parse import urlparse, urlencode, quote, unquote
 
 
-def str_bool(b):
+def str_bool(b: bool) -> str:
     """Convert boolean to string, in the way expected by the API."""
     return "true" if b else "false"
 
 
-def str_bool_nullable(b):
+def str_bool_nullable(b: Optional[bool]) -> Optional[str]:
     """Similar to str_bool, but leave None as None"""
     return None if b is None else str_bool(b)
 
@@ -34,7 +30,7 @@ def parse_html(html: str) -> BeautifulSoup:
         return BeautifulSoup(html.replace("'", "'"), "html.parser")
 
 
-def get_text(html):
+def get_text(html: str) -> str:
     """Converts html to text, strips all tags."""
     text = parse_html(html).get_text()
     return unicodedata.normalize("NFKC", text)
@@ -53,7 +49,7 @@ def html_to_paragraphs(html: str) -> List[List[str]]:
     return [[get_text(line) for line in p] for p in paragraphs]
 
 
-def format_content(content):
+def format_content(content: str) -> Generator[str, None, None]:
     """Given a Status contents in HTML, converts it into lines of plain text.
 
     Returns a generator yielding lines of content.
@@ -76,9 +72,9 @@ def format_content(content):
 EOF_KEY = "Ctrl-Z" if os.name == 'nt' else "Ctrl-D"
 
 
-def multiline_input():
+def multiline_input() -> str:
     """Lets user input multiple lines of text, terminated by EOF."""
-    lines = []
+    lines: List[str] = []
     while True:
         try:
             lines.append(input())
diff --git a/toot/utils/datetime.py b/toot/utils/datetime.py
index 2a214a0..e54ac80 100644
--- a/toot/utils/datetime.py
+++ b/toot/utils/datetime.py
@@ -4,7 +4,7 @@ import os
 from datetime import datetime, timezone
 
 
-def parse_datetime(value):
+def parse_datetime(value: str) -> datetime:
     """Returns an aware datetime in local timezone"""
     dttm = datetime.strptime(value, "%Y-%m-%dT%H:%M:%S.%f%z")