How to do it
Choose the PDF.
Highlight PDF
Add translucent highlight areas over important parts of PDF pages and save the annotated document.
Free
No signup
Local browser processing
02
The Highlight tool is selected automatically.
03
Choose the highlight color, size, and opacity, then click where the highlight should appear.
04
Add more highlights as required, apply the edits, and download the file.
Guide
What this page does
What this page does
Highlight important wording, figures, table cells, or regions by placing translucent colored areas over the page without changing the underlying PDF text.
When to use it
- Mark a sentence for review.
- Highlight a figure or table area.
- Emphasize a deadline, total, or reference number.
- Prepare study notes without modifying the original text objects.
Step-by-step workflow
- Choose the PDF.
- The Highlight tool is selected automatically.
- Choose the highlight color, size, and opacity, then click where the highlight should appear.
- Add more highlights as required, apply the edits, and download the file.
What you can accomplish
- Mark a sentence for review.
- Highlight a figure or table area.
- Emphasize a deadline, total, or reference number.
- Prepare study notes without modifying the original text objects.
Tips for a better result
- Use lower opacity so the content below remains readable.
- Use several small highlights instead of one large block when marking separate lines.
Privacy and processing
Your PDF is processed in your browser by this tool. The document contents are not uploaded to an external processing server.
What to know
- The highlight is a visual overlay and may not behave like a native PDF text-highlight annotation in every viewer.
- Always check the downloaded document before relying on it for formal review workflows.
FAQ
Frequently asked questions
What does Highlight PDF do?
Add translucent highlight areas over important parts of PDF pages and save the annotated document.
Does this change my original PDF?
No. The task creates a new PDF result and leaves the original file unchanged on your device.
Is my PDF uploaded to a processing server?
This published task runs in your browser, so the document contents do not need to be uploaded to an external processing engine.