Fovea

The reading engine is pure TypeScript with its own scheduler, pausing on punctuation and slowing on long words, and it is unit-tested end to end. Parsers run in a web worker, so a 120,000-word novel opens without a stutter, and the library lives in IndexedDB, so the whole app works offline and installs from the browser in two taps. Sixteen themes are grouped by the light you read in, from paper white to zero-blue night modes, with warmth, dim and contrast sliders and twelve typefaces. The landing page opens with a live calibration: the reader runs on the headline itself, so you feel the idea before you read a word about it.