Add Shape
Draw rectangles on a PDF — drag on the page to mark out a region for diagram annotation, callouts, or visual emphasis.
1. Upload your file
How does the Add Shape work?
Draw rectangles on a PDF for diagram annotation, callouts, or visual emphasis. Click and drag on each page to mark out a rectangular region; do that as many times as you need. Optional fill renders shapes semi-transparently — useful for "circle this region" callouts. For arrows use Add Arrow; circle / line shapes are on the roadmap.
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.