Highlight PDF
Private & Secure — Browser Processing Only
Select PDF to Highlight
⚠️ Mobile users: For best results, enable Desktop Mode in your browser.
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How to Highlight a PDF in 4 Easy Steps
Upload Your PDF
Click the upload area and select your PDF file. It stays on your device — never uploaded.
Choose a Color
Pick yellow, green, or blue from the color selector. Switch colors anytime between highlights.
Draw Highlights
Click and drag over any text or area on the PDF to add a highlight. Scroll through all pages.
Download PDF
Click "Download PDF". Your highlighted PDF is processed in your browser and downloads free.
100% Private
Files are processed locally using WebAssembly. Nothing is ever uploaded to a server.
3 Highlight Colors
Yellow, green, and blue highlights. Mix colors across pages in the same document.
All Pages Supported
Scroll through every page and highlight any area — text, images, or sections.
Frequently Asked Questions
How do I highlight text in a PDF online for free? ▼
Upload your PDF, choose a highlight color, then click and drag over the text you want to highlight. Click "Download PDF" to save — free, no account needed.
What highlight colors are available? ▼
Yellow, green, and blue. You can switch colors between highlights and use multiple colors in the same document.
Is highlighting PDF online safe? ▼
Yes. All processing happens locally in your browser. Your files are never uploaded to any server, making it completely private.
Can I highlight multiple pages in a PDF? ▼
Yes. All pages are displayed in the viewer. Scroll through and add highlights to any page before downloading.