Stirling PDF: The PDF Powerhouse That Keeps Your Data Private

Most PDF tools still require you to upload sensitive files to third-party servers. Stirling PDF breaks that mold. This open-source powerhouse runs entirely on your local network, giving you enterprise-grade PDF capabilities without ever exposing your data to the internet. Whether you're a solo user managing personal documents or an enterprise handling confidential files, Stirling PDF puts privacy and control back in your hands.

Website: https://www.stirlingpdf.com/

Why Stirling PDF?

Stirling PDF isn't just another PDF tool—it's a complete document management solution built with privacy and flexibility at its core:

100% Local & Private
Your files never leave your network. Process sensitive documents with confidence, knowing they're secure behind your firewall.
Comprehensive PDF Toolkit
From basic operations like merging and splitting to advanced features like OCR, redaction, and digital signatures—all in one interface.
Enterprise-Ready Architecture
Scale from a single user to thousands with Docker, Kubernetes, or traditional server deployments. Stirling PDF handles it all.
Customizable & Extensible
Modify the interface, add custom tools, or integrate with your existing systems via the open API.
Multi-Language Support
Available in 30+ languages, with community-driven translations keeping pace with new features.
Zero Data Retention
Files are processed in memory and deleted immediately after use—no storage, no tracking, no surprises.

Spotlight on Key Features

1. Document Operations

• Merge, split, rotate, and reorder PDFs
• Convert to/from images, Word, Excel, and more
• Compress files without quality loss
• Extract text and images

2. Security & Privacy

• Password protect and encrypt PDFs
• Redact sensitive information
• Add digital signatures
• Remove metadata and hidden content

3. Advanced Processing

• OCR for scanned documents
• Batch processing for multiple files
• Custom page layouts and numbering
• Watermark and stamp tools

4. Enterprise Features

• Role-based access control
• Audit logging
• API for automation
• High-availability deployments

Getting Started in Minutes

Choose your deployment path:

A) Quick Docker Launch

docker run -d \
  -p 8080:8080 \
  -v /path/to/storage:/usr/share/tesseract-ocr/4.00/tessdata \
  frooodle/s-pdf:latest

Visit http://localhost:8080 and start processing PDFs immediately.

B) Kubernetes Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: stirling-pdf
spec:
  replicas: 3
  template:
    spec:
      containers:
      - name: stirling-pdf
        image: frooodle/s-pdf:latest
        ports:
        - containerPort: 8080

C) Traditional Server Setup

git clone https://github.com/Stirling-Tools/Stirling-PDF.git
cd Stirling-PDF
./gradlew bootRun

Join the Stirling PDF Community

With over 57K GitHub stars and 4.8K forks, Stirling PDF thrives on community contributions:

Report Issues & Request Features on GitHub
Submit Pull Requests to add new capabilities
Help Translate into new languages
Build Custom Tools using the open API

Learn how to contribute in the CONTRIBUTING.md guide.

Final Thoughts

In a world where data privacy is non-negotiable, Stirling PDF offers a refreshing alternative to cloud-based PDF tools. Its comprehensive feature set, enterprise-grade architecture, and commitment to privacy make it the ideal choice for anyone who values control over their documents.

Ready to take control of your PDF workflow? Explore more at https://www.stirlingpdf.com/ or dive into the source on GitHub.