PDFEnrich · Available

Annotate a PDF with highlights, drawings, and comments

Mark up a document directly in your browser, check every note in context, and download a clean review copy without creating an account.

PDFEnrich opens the PDF in a full browser editor where you can highlight, draw, add arrows and shapes, cover areas with whiteout, and place page comments. Visual marks are flattened into the downloaded PDF so they remain visible in standard readers; the browser session keeps the richer local comment trail for continued review.

Use Annotate PDF

How to use Annotate PDF

  1. Choose a valid, unencrypted PDF and open the page you need to mark up.
  2. Add highlights, drawings, shapes, or comments, then adjust each mark in context.
  3. Review every annotated page and download the finished PDF.

What this tool supports

  • Highlight text and draw freehand with adjustable colors and sizes.
  • Add arrows, shapes, whiteout areas, and page-level comments.
  • Download a marked-up PDF without signup or a PDFEnrich watermark.

Common Annotate PDF tasks

  • Marking changes on a draft
  • Highlighting study or research material
  • Leaving clear page-specific review notes

Privacy, supported files, and limits

Processing runs in this browser. Guest files stay on this device; PDFs opened while signed in also sync privately to your account for cross-device access.

Supported annotations are flattened into the downloaded PDF so they remain visible in standard readers. Shared comment threads are a separate collaboration workflow.

Annotate PDF questions

Can I annotate a PDF online for free?

Yes. The supported annotation tools work without an account, subscription, or PDFEnrich watermark.

What PDF annotations can I add?

You can add highlights, drawings, arrows, shapes, whiteout areas, and page comments with the current editor tools.

Will annotations appear in the downloaded PDF?

Supported visual marks are flattened into the export so they remain visible in standard PDF readers.

Can I annotate a scanned PDF?

Yes. You can draw and place visual marks on scanned pages; native text highlighting requires searchable text or OCR.

Does annotating upload my PDF?

Processing runs in this browser. Guest files stay on this device; PDFs opened while signed in also sync privately to your account for cross-device access.

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