Drag the middle letters of a word to even out the spacing, then compare your kerning with an optically computed answer. Ten rounds across ten typefaces, scored out of 1000.
Your spacing Answer Too loose Too tight
Each letter is drawn on a canvas and its actual ink is measured row by row. The white-space area between each pair of letters is added up from the tallest letter down to the baseline, counting deep counters only up to a set depth. With the end letters fixed, the middle letters are placed so every pair has the same optical area.
The game measures how far each middle letter is from the answer relative to the font size (em) and turns it into a 0–100 score. The average error is shown in thousandths of an em; about 0.05 em of error is roughly 50 points. Your 10-round total sets a grade from S to D.
Tracking adds or removes the same amount of space between all letters in a word. Kerning adjusts the space between specific pairs, like AV or To. This game trains the kerning eye: different letter shapes need different gaps.
If a typeface can't be loaded from Google Fonts, a fallback font is used and noted next to the font name. The answer is computed from the letters actually drawn, so you can still play. Your best total is saved only in this browser, never on a server.