Show HN: BraiNOTES, handwritten notes on your lecture PDFs in a browser tab

Automated excerpt

Write with a pen, keep the pdf next to your notes. braiNOTES is an open source app for writing by hand, like OneNote or GoodNotes, but in a browser tab. Ink is drawn into cached canvas tiles, only the tiles where something changed are drawn again. The line is drawn the moment the pen moves.

Selected automatically from source text; not independently written or fact-checked. Read the original for full context.