TypeCrt is a typing test. The test itself needs JavaScript to time your keystrokes, so it cannot run here. These pages work without it:
A key counts as mastered once you hit this speed on it cleanly. Raise it and letters unlock more slowly but stick harder.
On: a wrong key is refused and you retype it, so a mistake can never enter the text. Off: it is recorded and you correct it yourself.
Ranked runs on the 15, 30 and 60 second English tests. Every entry is submitted with its keystroke timing record and screened before it is ranked.