Physics Ink – Privacy Policy

Last updated: November 9, 2026

Physics Ink is a Chrome extension that lets you draw on web pages, Google Docs and PDFs and add physics diagrams. This page explains what happens to your information.

What Physics Ink does not do

Physics Ink does not collect, sell, or share personal information. It has no accounts, no analytics, no ads, and it does not send your data to any server, including ours.

What is stored, and where

• Your drawings and notes for each page are saved only in your own Chrome browser (Chrome's local extension storage), so they come back when you return to that page. They never leave your computer.
• Your settings (colors, sizes, last-used library tab) are saved the same way.
• PDFs and pictures you open in the Physics Whiteboard are processed entirely inside your browser. Files you save (PNG or PDF) go to the location you choose on your computer.

Removing the extension deletes everything it stored.

Permissions

• activeTab / scripting: shows the drawing layer on the tab you're viewing, only when you click the Physics Ink button or press its shortcut.
• storage / unlimitedStorage: saves your notes and settings on your computer.
• downloads: saves screen pictures you take with the camera button.
• clipboardWrite: "Copy notes as a picture" so you can paste your drawing into a document.
• contextMenus: adds "Open Physics Whiteboard" when you right-click the extension icon.
• Optional access to a website: only if you choose to open a PDF you were viewing online in the whiteboard, Chrome asks your permission to read that one PDF file.

Children

Physics Ink is designed for teachers and students. Because it collects no personal information, it collects none from children.

Changes

If this policy changes, the new version will be posted on this page with a new date.

Contact

Questions: www123physics@gmail.com