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Annotate PDF
Add coloured highlight boxes and comment labels to any PDF page. Perfect for marking up documents for review.
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Drag & drop a PDF file
🔒 Files never leave your device. 100% browser-based.
About Annotate PDF
Add highlight boxes, underlines, and sticky note comments to PDF files. Free, no sign-up, browser-based.
This Annotate PDF runs entirely in your browser, so files and data stay on your device.
How to use Annotate PDF
- Add your file or paste your input.
- Adjust settings if available.
- Click the action button to process.
- Download or copy the result.
No uploads, no queues — just quick results with your Annotate PDF task.
Why use WebToolsDen for Annotate PDF?
- Private: processing happens locally in your browser.
- Fast: no file uploads or waiting on servers.
- Free: no accounts or subscriptions required.
Annotate PDF tips and use cases
- Great for document workflows, sharing, and archiving.
- Works entirely in your browser for privacy.
- Best results with clear, high-quality files.