You can use custom double characters like "ae" to create an "ä". Completely customisable! Use a dictionary like:
umlauts = {
"ae": "ä",
"ee": "é"
}It has a pause function, on standard using the button scroll lock, but customisable as well.
It plays a sound, when activated/deactivated!
git clone https://github.com/Blnix/umlaut.git
cd umlaut
pip install -r requirements.txt
py main.py