Annotate PDF Online
Professional PDF annotation tool with highlighting, drawing, shapes, and text comments. Mark up your documents with comprehensive annotation features.
Drop your PDF file here
or click to select from your device
Your files are encrypted and processed securely
Freehand Drawing
Draw directly on your PDF with customizable pen tools. Perfect for sketching, marking corrections, or adding handwritten notes and annotations.
Shape Annotations
Add rectangles, circles, and other shapes to highlight important sections. Customize colors, borders, and transparency for effective markup.
Text Comments
Insert text boxes and comment notes anywhere on your document. Perfect for feedback, reviews, and collaborative document editing.
Color Customization
Choose from a full spectrum of colors for all annotation tools. Create consistent color-coding systems for different types of annotations.
Layer Management
Organize annotations in layers with full control over visibility and ordering. Keep different types of markup separate and manageable.
Private Processing
All annotations are processed locally in your browser. Your documents and annotations remain completely private and secure.
How to Annotate PDF Online
Upload your PDF file by dragging and dropping or clicking to select from your device.
Choose annotation tools from the toolbar: drawing, text, shapes, or form filling. Each tool offers customization options.
Add annotations by clicking and dragging on the PDF. Customize colors, sizes, and properties in the side panel.
Download your annotated PDF with all markup preserved. Perfect for reviews, feedback, and collaborative work.