simple-anonymizer 0.1.16

Privacy-first text anonymization tool with enterprise-grade accuracy for removing PII from documents

🕵️ Anon - Privacy-First Text Anonymizer

A powerful, offline-first text anonymization tool that removes personal identifiable information (PII) from text while keeping all data on your machine. Built with enterprise-grade accuracy using spaCy NER models and Microsoft Presidio.

✨ Features

• 🔒 100% Offline - All processing happens on your machine
• 🎯 High Accuracy - Advanced NER using spaCy large models + Presidio
• 🔐 Secure Always-Redact - Custom sensitive terms stored securely in ~/.anonymizer
• 🖥️ Multiple Interfaces - Modern GUI, Web API, and CLI
• 🚀 Background Processing - CLIs run detached with proper logging
• 📦 Easy Installation - One-command install with automatic model setup
• 🏢 Cross-Platform - Windows, macOS, and Linux support

🚀 Quick Start

Installation

pip install simple-anonymizer

The installation will automatically download the required spaCy model (en_core_web_lg) for optimal accuracy.

GUI Application

Launch the modern GUI interface:

anon-gui

✅ The GUI runs in background - you can close the terminal after launch

📝 Logs available at ~/.anonymizer/gui_YYYYMMDD_HHMMSS.log

Web Interface

Start the web server:

anon-web start

✅ Server runs in background - accessible at http://127.0.0.1:8080

📝 Comprehensive logging and process management

Web Server Management

# Start server (custom host/port)
anon-web start --host 0.0.0.0 --port 5000

# Check server status
anon-web status

# View recent logs
anon-web logs

# Stop server
anon-web stop

# Clean old log files (preserves always-redact settings)
anon-web clean

Always-Redact Management

Securely manage custom sensitive terms that should always be anonymized:

# Add terms to always-redact list
anon-web add-redact "CompanyName"
anon-web add-redact "ProjectCodename"

# Remove terms from always-redact list
anon-web remove-redact "ProjectCodename"

# List all always-redacted terms
anon-web list-redact

🔐 Security Features:

• Terms stored securely in ~/.anonymizer/always_redact.txt
• Not visible in GUI or web interfaces (add/remove only)
• Persists across all anonymization operations
• Case-insensitive matching with duplicate prevention

Python API

from anonymizer_core import redact

# Basic anonymization
result = redact("John Doe works at Microsoft in Seattle.")
print(result.text)
# Output: "<REDACTED> works at <REDACTED> in <REDACTED>."

# Always-redact terms are automatically applied
# (managed via CLI commands shown above)
result = redact("Contact [e-mail] about AcmeProject details.")
print(result.text)
# Output: "Contact <REDACTED> about <REDACTED> details."
# (if "AcmeProject" was added to always-redact list)

🔐 Data Security & Privacy

Always-Redact Terms

• Secure Storage: Custom sensitive terms are stored in ~/.anonymizer/always_redact.txt
• No Shipping: The file is created locally on first use, never shipped with the package
• Privacy-First: Terms are not exposed through GUI or web interfaces
• CLI-Only Access: Terms can only be viewed via command line for security
• Persistent: Settings survive application updates and log cleanups

File Locations

# User data directory
~/.anonymizer/
├── always_redact.txt         # Your custom sensitive terms
├── gui_YYYYMMDD_HHMMSS.log  # GUI application logs
└── web_server_*.log         # Web server logs

Data Flow

1. Input Text → Standard PII Detection (emails, phones, etc.)
2. Input Text → Always-Redact Terms (your custom words)
3. Combined Results → Final Anonymized Output

🔧 Advanced Usage

GUI Features

• Modern Interface: Clean, intuitive design with real-time processing
• Secure Term Management: Add/remove always-redact terms without exposure
• File Processing: Load and save text files directly
• Background Processing: Non-blocking anonymization with progress indicators

Web API Features

• RESTful Endpoints: Standard HTTP API for integration
• File Upload: Process text files via web interface
• JSON Response: Structured output with metadata
• Health Checks: Monitor service status programmatically

CLI Management

• Process Control: Start/stop/status for web server
• Log Management: View and clean application logs
• Term Management: Secure always-redact term administration
• Background Operation: All services run detached from terminal

🛠️ Technical Details

Anonymization Engine

• Multi-Tier Processing: Pattern-based → Always-redact → NER fallback
• Position Tracking: Prevents overlapping redactions for accuracy
• Case Insensitive: Always-redact terms match regardless of case
• Word Boundaries: Only complete words are redacted (not partial matches)

Supported Entity Types

• Emails: [e-mail]
• URLs: https://example.com
• IP Addresses: 192.168.1.1
• Phone Numbers: [phone]
• Custom Terms: Your always-redact list
• Names: Via NER when available
• Organizations: Via NER when available

📋 Examples & Use Cases

Basic Anonymization

from anonymizer_core import redact

text = "Please contact John Smith at [e-mail] or call [phone]."
result = redact(text)
print(result.text)
# Output: "Please contact <REDACTED> at <REDACTED> or call <REDACTED>."

Company-Specific Anonymization

# Set up company-specific terms
anon-web add-redact "AcmeCorp"
anon-web add-redact "ProjectTitan"
anon-web add-redact "confidential"

# Now these terms are always redacted
python -c "
from anonymizer_core import redact
text = 'AcmeCorp confidential: ProjectTitan budget is 500K'
print(redact(text).text)
"
# Output: "<REDACTED> <REDACTED>: <REDACTED> budget is 500K"

Enterprise Integration

# Configure once via CLI
# anon-web add-redact "YourCompanyName"
# anon-web add-redact "YourProduct"

# Use in your application
from anonymizer_core import redact

def process_support_ticket(ticket_text):
    """Anonymize support tickets before logging."""
    result = redact(ticket_text)
    return result.text

# All company-specific terms are automatically redacted
anonymized = process_support_ticket(
    "Customer [e-mail] reported YourProduct crashed on YourCompanyName servers."
)
print(anonymized)
# Output: "Customer <REDACTED> reported <REDACTED> crashed on <REDACTED> servers."

Batch Processing

# Set up your terms once
anon-web add-redact "SensitiveTerm1"
anon-web add-redact "SensitiveTerm2"

# Process multiple files - terms persist across all operations
for file in *.txt; do
    python -c "
from anonymizer_core import redact
with open('$file', 'r') as f:
    content = f.read()
with open('anonymized_$file', 'w') as f:
    f.write(redact(content).text)
    "
done

Security Audit

# List all configured terms (CLI only for security)
anon-web list-redact

# Remove terms that are no longer sensitive
anon-web remove-redact "OldProjectName"

# Clean logs while preserving term configuration
anon-web clean

🚨 Security Best Practices

Always-Redact Configuration

• Review Regularly: Audit your always-redact terms periodically
• Principle of Least Privilege: Only add terms that truly need redaction
• Team Coordination: Ensure team members know which terms are configured
• Backup: Consider backing up ~/.anonymizer/always_redact.txt securely

Production Deployment

• Isolated Environment: Deploy in secure, isolated environments
• Log Management: Regularly clean logs with anon-web clean
• Access Control: Restrict CLI access to authorized personnel only
• Monitor Usage: Review anonymization logs for compliance

📊 CLI Command Reference

Server Management

anon-web start [--host HOST] [--port PORT]  # Start web server
anon-web stop                                # Stop web server  
anon-web status                              # Check server status
anon-web logs                                # View recent logs
anon-web clean                               # Clean old logs (preserve settings)

Always-Redact Management

anon-web add-redact "TERM"                   # Add term to always-redact list
anon-web remove-redact "TERM"                # Remove term from list
anon-web list-redact                         # List all terms (CLI only)

GUI Launch

anon-gui                                     # Launch GUI application

🔍 Troubleshooting

Common Issues

Terms not being redacted?

• Verify term was added: anon-web list-redact
• Check exact spelling and case sensitivity
• Ensure word boundaries (partial matches won't work)

GUI/Web not reflecting new terms?

• This is by design for security
• Terms are automatically applied during anonymization
• Use CLI list-redact to verify configuration

Server won't start?

• Check if port is already in use: anon-web status
• Try different port: anon-web start --port 8081
• Check logs: anon-web logs

Performance issues?

• Clean old logs: anon-web clean
• For large texts, consider batch processing
• Restart services if needed: anon-web stop && anon-web start

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Need help? Check the logs in ~/.anonymizer/ for detailed error information.