Highlight PDF Online Free
Add colorful highlights to your PDF documents. Draw rectangles to mark important text and sections.
Drop PDF here
Upload a PDF to add highlights
Max 100 MB per file
Last updated May 2026
Pro Tip
Use different colors to categorize your highlights - yellow for key points, green for definitions, blue for references, and pink for action items.
How to Use PDF Highlighter
1
Upload Your PDF
Drag and drop your PDF file into the upload area, or click to browse and select a file from your device.
2
Select Highlight Color
Choose from yellow, green, blue, or pink highlight colors to match your needs.
3
Draw Highlights
Click and drag on the PDF to draw rectangular highlights. Navigate between pages using the arrows.
4
Download Highlighted PDF
Review your highlights and click download to save the annotated PDF.
Why Use Our PDF Highlighter?
Multiple Colors
Choose from yellow, green, blue, or pink highlights.
Draw to Highlight
Simply click and drag to draw highlight rectangles.
Page Navigation
Easily navigate and highlight any page in your PDF.
100% Free
No hidden charges or premium features locked behind paywalls.
Privacy First
Files are processed in your browser and never uploaded to servers.
Works Everywhere
Compatible with desktop, tablet, and mobile browsers.