Add Comment Box
Add inline comment boxes on a PDF — click on the page where each comment should sit and type its text.
1. Upload your file
How does the Add Comment Box work?
Add inline comment boxes on a PDF — small pale-yellow bordered rectangles with your note text inside, anchored where you click on the page. Useful for marked-up review copies, instructor feedback on student work, or peer-review markup. Click on the page once for each comment, then type the text for each comment in the textarea below (one block per blank line, in click order). Different from Sticky Note, which renders as an icon-and-bubble; this is a simple boxed inline annotation.
🔒 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.
Frequently asked
For heavier PDF workflows
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