Annotating a PDF lets you comment without changing the original layout. Highlight the important lines, add a note, draw an arrow, and send it back.
What annotation is good for
Reviewing a contract, marking up a draft, leaving feedback on a design, or flagging the figures that matter. Annotations sit on top of the page, so the underlying document stays intact and readable.
How to annotate a PDF
- Open the PDF Annotator.
- Add your PDF.
- Use the highlight, text, and drawing tools to mark up the pages.
- Download the annotated file.
Your document is processed in the browser, so private files are never uploaded.
Annotation tips
- Highlight sparingly. A page covered in yellow is as hard to read as no marks at all.
- Use short text notes for specific requests rather than long paragraphs.
- Arrows and boxes are great for pointing at a figure or a clause.
Related tasks
If you need to sign rather than comment, use Sign PDF. To fill in form fields, try the Fillable PDF Creator.
Frequently asked questions
Can I highlight text in a PDF for free?
Yes. The PDF Annotator lets you highlight, add notes, and draw, then download the marked-up file at no cost.
Will annotations change the original document?
No. Annotations sit on top of the page, so the underlying content stays the same.
Is my PDF uploaded when I annotate it?
No. Annotation happens in your browser, so the file stays private.