Private demo

Open a PDF and experiment with annotations.

No data leaves your computer. PDFs and annotation JSON stay in this browser's localStorage for the demo, so you can safely upload a PDF, draw on it, save locally, and come back to it later.

PDF files are read by your browser only.

Annotations can be saved locally and copied as JSON.

Select or drag a PDF here

Drop a PDF to open it immediately. The file is also saved in your browser for this demo's previous PDF list.

Choose PDF

Previous PDFs

Resume documents stored in localStorage on this device.

0 saved

No previous PDFs yet

Uploaded PDFs will appear here with a first-page preview after you open them.