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  3. PDF Annotation Viewer
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About PDF Annotation Viewer

PDF annotations — highlights, sticky notes, comments, and markup — are not always visible in every viewer. This tool surfaces all annotations in a document and presents them in a readable list alongside page thumbnails, so you can review every comment and note without hunting through pages.

Getting Started

  1. 1Upload a PDF that contains annotations.
  2. 2The tool scans all pages and lists every annotation it finds.
  3. 3Browse annotations by page or filter by type (highlight, note, comment, etc.).
  4. 4Click on an annotation to jump to its location in the page preview.
  5. 5Export the annotation list as a text summary if needed.

What You Get

  • Extracts all standard annotation types (highlights, notes, comments, stamps, markup)
  • Displays author and date information when available
  • Filter annotations by type
  • Jump-to-page navigation from annotation list
  • Page thumbnail preview with annotation overlay
  • Export annotations as a text or JSON summary
  • Handles documents with hundreds of annotations efficiently

How annotation extraction works

The viewer parses the annotation layer of each page and extracts text comments, highlights with associated notes, underlines, strikethroughs, stamps, and drawn markups. Each annotation is displayed with its page number, type, author (if available), and content. You can filter by annotation type or jump to a specific page to see annotations in context. This is particularly valuable for reviewing feedback on collaborative documents where multiple people have left comments.

Perfect For

  • Review consolidation

    Collect and read all reviewer comments from a collaborative document in one place.

  • Quality assurance

    Verify that all editorial notes and corrections have been addressed before publishing.

  • Meeting preparation

    Quickly scan all annotations on a shared document before a review meeting.

  • Archiving feedback

    Export annotations from reviewed documents to keep a record of feedback separately from the PDF.

  • Accessibility review

    Surface hidden comments and notes that might not be visible in a basic PDF viewer.

Frequently Asked Questions

What types of annotations can it find?

It supports text highlights, sticky notes, free text, stamps, underlines, strikethroughs, ink drawings, and pop-up comments.

Can I edit annotations with this tool?

No, this is a read-only viewer. It displays and exports annotations but does not modify them.

Why are no annotations found in my PDF?

Some PDFs flatten annotations into the page content, making them part of the page image rather than separate annotation objects. Flattened annotations cannot be extracted.

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.