Sometimes good, sometimes erroneous.

geweldig programma

G

slecht woordenboek

Does not work in Windows 10. After many years this is the reason for leaving Firefox and will use Chrome

IMPORTANT !!! Everyone. For 'Spelling Check', download 'Woordenboek' from this page https://addons.mozilla.org/en-US/firefox/language-tools/
This language pack cannot be used for spelling !
I was confused too.

Cannot choose dutch language for spell-check after installing the language pack. What does it do?

It doesn't work! At all!!

tot nu toe is voor mij firefox de beste