jetzt is a speed-reader extension for Chrome inspired by Spritz.
Control is currently keyboard-only.
Initiate jetzt by pressing alt-s and clicking on the block of text you wish to read. Alternatively, select some text before pressing alt-s.
Change size with +/-.
Go faster/slower with up/down arrow keys.
Go back/forward a sentence with left/right arrow keys (hold alt to navigate by paragraphs).
Pause with space.
Close with escape.
Switch between light/dark themes with 0
Toggle summary stats with / or ? at the end of a run