Add Sticky Notes / Comments - Free Online Browser Tool

Attach review sticky note annotations with customizable author tags.

A comment says something that does not fit in the document itself: a question for the author, an explanation of a change, a note about why something is deliberately blank. This tool attaches sticky-note comments with your name as the author so reviewers see who said what.

This add sticky notes / comments utility runs completely inside your web browser. Your document is opened locally and processed on your own device using JavaScript and WebAssembly, so your file is never uploaded to any server. There is no signup, no watermark and no limit on how many documents you can handle.

  • 100% client-side - files never leave your device
  • Instant processing, no upload wait
  • Works on desktop, tablet and mobile
  • Free forever, no account required

Common next steps: Highlight PDF, Flatten Form Fields, Underline Text.

How to Use the Add Sticky Notes / Comments Tool

Four steps, and the whole thing runs locally on your own device.

  1. Load the PDF

    Drop in the document under review.

  2. Set your author name

    Enter the name comments should be attributed to, so reviewers know who is asking what.

  3. Attach a note to a page

    Choose the page, position the note marker and type your comment text.

  4. Save with comments intact

    Comments are stored as standard annotations and are visible in Acrobat and other readers.

Frequently Asked Questions

Will the recipient see my comments?

Yes — comment annotations display in any reader that supports annotations, including Acrobat, so it does not depend on a proprietary format.

Can I attach several comments to one page?

Yes. Place as many notes on a page as the discussion needs, each with its own text and author.

What does the author name do?

It attributes each comment to you in the reader’s annotation panel, which is how reviewers distinguish questions from different people on the same document.

Are the comments visible when the file is printed?

Not by default. Annotation display is a viewer setting, so a printed copy shows the page content without the note icons. Flattening the annotations bakes them in if you want them permanent.

How do I remove comments later?

Run Flatten / Remove Annotations to strip all markup, or delete them selectively in a reader with annotation editing.