PDF Highlighter
Highlight and annotate PDF files
100% Client-Side • Privacy Protected
PDF Highlighter & Annotator
Highlight text and add annotations to PDF files
⚠️ Advanced Feature:
PDF highlighting and annotation requires advanced libraries. Recommended solutions:
- PDF.js - Mozilla's PDF renderer (open-source)
- PSPDFKit - Commercial PDF SDK with full annotation support
- Annotorious - Open-source annotation library
- ApryseSDK (formerly PDFTron) - Enterprise solution
💡 Quick Alternatives:
- Use Adobe Acrobat Reader (free) for basic highlighting
- Try browser extensions like Kami or Hypothesis
- Use Microsoft Edge's built-in PDF annotation tools
How to use PDF Highlighter?
1
Upload your PDF file
2
Open the annotation tool
3
Select highlighting color
4
Click and drag to highlight text
5
Add comments and notes as needed
6
Save annotated PDF
Why use this tool?
- ✓100% free and no registration required
- ✓All processing happens on your device - your data stays private
- ✓No watermarks, no ads interrupting your workflow
- ✓Works on any device - desktop, tablet, or mobile
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💡 Quick Tips
- • Works offline after first load
- • No file size limits
- • Browser cache for faster processing
- • Compatible with all major formats