Fortissimo — a notepad that knows how hard you typed

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Every glyph is sized by the violence of its keystroke. With the mic on, the page peak-meters the thump of your keyboard in the ~100 ms around each key event (the audio is reduced to a loudness number on-device and discarded — nothing is recorded or sent anywhere). On a phone, the accelerometer feels the jolt of your taps instead. With neither, it falls back on typing rhythm and how long you hold each key. It self-calibrates as you go: type evenly and everything settles mid-size — the outliers are the point. Notes stay in this browser (localStorage). Sibling of After Me, the patient singing examiner, and Pen, which draws what you meant, not what your mouse did — all at tools.j11y.io.