How do I annotate a PDF online for free?

Upload your PDF to DocDesk's Annotate tool, use the toolbar to add highlights, comments, or drawings, and download your annotated PDF.

What annotation types does DocDesk support?

DocDesk supports highlights, underlines, strikethrough, text comments, freehand drawing, shapes, and text boxes.

Yes. Annotations are permanently embedded in the downloaded PDF, so anyone who opens it can see them.

Yes. DocDesk works on all devices including smartphones and tablets.

Rich Annotation

Annotate PDF files online for free. Add comments, highlights, underlines, text boxes, and drawings to any PDF with DocDesk. No sign-up required.

100% Free No sign-up needed Instant processing

1
Upload PDF
Upload the PDF you want to annotate.
2
Add annotations
Highlight text, add comments, draw shapes, or insert text boxes.
3
Save annotated PDF
Download your annotated PDF with all marks preserved.

How do I annotate a PDF online for free?: Upload your PDF to DocDesk's Annotate tool, use the toolbar to add highlights, comments, or drawings, and download your annotated PDF.
What annotation types does DocDesk support?: DocDesk supports highlights, underlines, strikethrough, text comments, freehand drawing, shapes, and text boxes.
Will my annotations be visible to others?: Yes. Annotations are permanently embedded in the downloaded PDF, so anyone who opens it can see them.
Can I annotate a PDF on my phone?: Yes. DocDesk works on all devices including smartphones and tablets.