PDF Tool

Annotate PDF

Add text, images, shapes, drawings, and highlights to your PDF pages.

Click to upload or drag and drop

PDF files only

About This Tool

Add text annotations anywhere on your PDF pages
Draw freehand with pen tool for signatures or notes
Add shapes: rectangles, circles, and lines
Highlight important areas with semi-transparent overlay
Insert images/logos onto your PDF pages
All processing stays in your browser â€” nothing uploaded

How to Use

Step 1: Upload your PDF file
Step 2: Select an annotation tool from the toolbar
Step 3: Click or drag on the canvas to add annotations
Step 4: Navigate between pages and annotate each one
Step 5: Export the annotated PDF when done

What is Annotate PDF?

Annotate PDF adds highlights, notes, and annotations to PDF documents directly in your browser. See also: sign-pdf or pdf-header-footer.

How It Works

Upload or load your PDF into the tool, configure the settings as needed, and click the process button. The tool reads and modifies the PDF structure using client-side JavaScript libraries, then generates a downloadable output file. Your documents never leave your browser.

Use Cases

Professionals who need to modify PDF documents quickly without Adobe Acrobat
Students annotating or organizing research papers and study materials
Anyone who needs a fast, private way to edit PDF files on any device

Frequently Asked Questions

What is Annotate PDF?

Annotate PDF adds highlights, notes, and annotations to PDF documents directly in your browser. It runs entirely in your browser, with no sign-up and no file uploads.

How do I use Annotate PDF?

Add text annotations anywhere on your PDF pages.

Is Annotate PDF free and private?

Yes - Annotate PDF is completely free and requires no account. Everything runs locally in your browser, so your PDF files never leave your device.

Annotate PDF

What is Annotate PDF?

How It Works

Use Cases

Frequently Asked Questions

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