About Stylus
Stylus is a calm, distraction-free digital canvas and PDF reader engineered for students, educators, and researchers. Whether you are solving calculus problems, annotating a research paper, or sketching system diagrams with a stylus, Stylus delivers sub-millisecond stroke latency and zero-cloud local storage.
Everyday Uses
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Take handwritten lecture notes and whiteboard brainstorming sessions
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Open and mark up heavy PDF textbooks and scientific papers with highlighters
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Typeset complex mathematical equations using inline KaTeX notation
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Draw hand-drawn architectural diagrams and rough geometry with auto-smoothing
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Export vector notes directly into publication-ready PDFs
Highlights
Pressure-Sensitive Ink
Utilizes perfect-freehand velocity and pressure modeling for lifelike fountain pen and marker strokes.
Split-Screen PDF Reader
Load multi-page research documents side-by-side with your canvas and annotate directly across margins.
Mathematical Typography
Render LaTeX and KaTeX formulas directly onto your canvas without leaving the stylus workspace.
100% Client-Side Privacy
All sketches, notes, and PDF annotations stay safely inside your browser OPFS and IndexedDB storage.