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Annotate PDF
Professional PDF annotation with highlights, shapes, sticky notes, stamps, and layer management.
Drop PDF files here
or browse files from your computer
Max 50MBPrivacy prioritized
Full Annotation Toolkit
Text Markup
Highlight, underline, strikethrough
Freehand Drawing
Draw shapes and annotations
Stamps
15+ professional stamp presets
Comments
Sticky notes with reply threads
Layers
Organize annotations by layer
Export
JSON and XFDF formats
Industry-Standard Features
- • Text Markup: Highlight, underline, strikethrough with custom colors: Highlight, underline, strikethrough with custom colors
- • Shapes: Rectangle, circle, arrow, line drawing tools: Rectangle, circle, arrow, line drawing tools
- • Sticky Notes: Add comments with reply threads: Add comments with reply threads
- • Stamps: Approved, Rejected, Draft, Confidential + 11 more: Approved, Rejected, Draft, Confidential + 11 more
- • Layer Management: Organize annotations, toggle visibility, lock layers: Organize annotations, toggle visibility, lock layers
- • Export/Import: JSON and XFDF format support: JSON and XFDF format support
- • Keyboard Shortcuts: V (Select), H (Highlight), T (Text), P (Pencil), etc.: V (Select), H (Highlight), T (Text), P (Pencil), etc.
Guide
How to annotate a PDF
Highlight, comment, and mark up PDFs for review workflows.
1
Upload your PDF
Open the document for review.
2
Add highlights and notes
Use annotation tools to mark important passages.
3
Export annotated PDF
Share the marked-up file with collaborators.
FAQ
Annotate PDF FAQ
Markup and compatibility.
Will others see annotations?
Yes when they open the exported PDF in a compatible reader.
Flatten annotations?
Some workflows flatten to prevent edits—check export options.
Print highlights?
Most readers print annotations; verify print settings include markups.
Legal review?
Ensure annotation authors and timestamps meet your policy.