Annotate PDF Online

Draw, highlight, add text — all directly on your PDF. Everything happens in your browser. No upload, no watermark, fully private.

Upload PDF File

Click to browse or drag & drop your PDF file

.pdf • Max 20MB

Saving Annotated PDF... 0%

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How It Works

Upload your PDF - Drag & drop or click to select
Choose annotation tool - Pen, highlighter, text, or eraser
Customize your annotations - Change colors, sizes, and fonts
Annotate directly - Draw, highlight, or add text to your PDF
Save and download - Get your annotated PDF instantly

All processing happens in your browser. Your files never leave your computer.

Freehand Drawing

Draw anywhere on your PDF

Highlight Text

Emphasize important parts

Add Text Notes

Add annotations easily

100% Private

Your files stay confidential

Tips for Best Results

Use the pen tool for signatures or freehand drawings
Highlight important text with semi-transparent colors
Add text notes to explain or comment on content
Use the eraser to correct mistakes
The original PDF remains unchanged on your device

Tool Descriptions

Pen: Draw freehand lines with adjustable thickness

Highlighter: Semi-transparent highlighting for text

Text: Add text annotations with different fonts

Eraser: Remove annotations you've made