PDF Tools
Stirling-PDF provides 60+ powerful PDF tools organized by category. Find the tool you need below.
🌟 Most Popular
The tools you'll use most often:
- Multi-Tool - Upload once, chain unlimited operations
- Read & Annotate - PDF viewer with annotations
- Merge - Combine multiple PDFs
- Convert - 50+ format conversions
- Compress - Reduce file size
- OCR - Make scanned PDFs searchable
- Compare - See differences between PDFs
- Redact - Remove sensitive content
View Recommended Tools Guide →
📚 Tools by Category
🔐 Security
Password protection, signatures, permissions, watermarks
- Add/Remove Password
- Change Permissions
- Sign - Handwritten signatures
- Certificate Sign - Digital signatures
- Validate Signature
- Add Watermark
- Sanitize PDF
- Auto-Redact
📑 Page Operations
Split, merge, rotate, extract, reorganize pages
- Split PDF
- Merge PDFs
- Rotate Pages
- Extract Pages
- Reorganize Pages
- Add Page Numbers
- Remove Pages/Blank Pages
Detailed Guide: Redaction
🔄 Convert
Convert to/from PDF - 50+ file formats supported
To PDF: Word, Excel, PowerPoint, Images, HTML, Markdown, Email, and more
From PDF: Word, PowerPoint, Text, Images, CSV, HTML, XML, PDF/A, and more
🎨 Content & Editing
Add, extract, and modify PDF content
- Add/Extract Images
- Add Stamp
- Edit Metadata
- Remove Annotations
- Replace Colors
- Get PDF Info
⚡ Advanced Features
🎨 Super Tools
- Multi-Tool - Workbench for chaining operations
- Read & Annotate - PDF viewer with annotations
- OCR - Make scanned PDFs searchable
- Compress - Reduce file size
- Automate (Pipeline) - Workflow automation
🔧 Advanced Tools
- Add Background/Stamp
- Booklet Imposition
- Overlay PDFs
- Multi-Page Layout
- Scale Pages
- Show JavaScript
- PDF Info (JSON)
🔍 Quick Tool Finder
I want to...
- Reduce file size → Compress
- Make searchable → OCR
- Combine files → Merge
- Split into parts → Split
- Convert format → Convert
- Add signature → Sign or Certificate Sign
- Remove content → Redact or Sanitize
- Edit pages → Reorganize Pages or Multi-Tool
- Chain operations → Multi-Tool
- Automate workflow → Automate