Annotate PDF
Add text notes, sticky notes, and highlighted annotations to any PDF page.
Drag & drop your file here
or click to browse files
Supports .pdf up to 500 MB · Files stay private
How It Works
Upload your PDF
Drag and drop your PDF or click to browse. The document opens in an interactive annotation editor.
Add your annotations
Use the toolbar to highlight text, add comments, draw markups, or insert sticky notes on any page.
Download the annotated PDF
Click "Annotate PDF" to save. All your annotations are permanently embedded in the downloaded file.
Why Use FreePDFApp?
- ✓Highlight text in multiple colors for easy reference
- ✓Add sticky note comments and text annotations on any page
- ✓Underline and strikethrough text for document review
- ✓Draw freehand markups with adjustable pen size and color
- ✓All annotations are embedded permanently in the downloaded PDF
Frequently Asked Questions
Yes. Annotations are embedded using standard PDF annotation formats, so they display correctly in Adobe Acrobat, Preview, Chrome, and other PDF viewers.
Yes. Navigate to any page and add annotations only where needed. Pages without annotations remain unchanged.
Once downloaded, annotations are embedded in the PDF. To modify them, upload the PDF again and make changes. Keep your original file as a backup.
The editor includes text highlighting in multiple colors, sticky notes, text comments, underline, strikethrough, and freehand drawing tools.
Yes. All annotation processing happens locally in your browser. Your PDF is never uploaded to any server.
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