BraiNOTES enables handwritten note-taking directly on PDFs within browser

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A developer has released BraiNOTES, a browser-based tool for annotating lecture slides and PDFs with handwritten notes. The application runs entirely in the browser as a static website with no backend, requiring no account and storing data locally via IndexedDB. It uses pdf.js to render documents and supports pen pressure, allowing users to write directly on imported files while keeping original text selectable. The tool is designed for students and offers both a study mode and a whiteboard mode for tutoring or exercises. It is available as an open-source project under an MIT license.

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