Code Sanitizer

A professional web-based tool for removing sensitive data from code before sharing with AI services like Claude, ChatGPT, or GitHub Copilot. Features a clean, minimal interface with GitHub-style diff visualization to show exactly what changes were made.

🔒 Why Use Code Sanitizer?

When working with AI coding assistants, you often need to share code that contains:

• API keys and tokens
• Database credentials
• Personal email addresses
• Internal URLs and IP addresses
• File system paths
• Sensitive comments

This tool automatically detects and replaces sensitive information with safe placeholders while preserving your code's structure and functionality.

✨ Features

🎯 Comprehensive Detection

• API Keys: AWS, GitHub, Google, Stripe, JWT tokens
• Database Strings: MongoDB, PostgreSQL, Redis, MySQL connections
• Personal Information: Email addresses, phone numbers
• Network Data: URLs, IP addresses, domain names
• System Paths: Windows, macOS, and Linux file paths
• Comments: TODO, FIXME, and personal notes

🔍 GitHub-Style Diff View

• Visual before/after comparison
• Line-by-line change highlighting
• Red highlighting for removed sensitive data
• Green highlighting for safe replacements
• Toggle between diff and clean output views

🎨 Professional Interface

• Clean, minimal black & white design
• Monospace fonts for code readability
• Responsive design for all devices
• Real-time statistics and feedback

🛡️ Smart Protection

• Detects already-sanitized code
• Preserves code structure and syntax
• Configurable detection options
• Safe placeholder replacements

🚀 Getting Started

Quick Start

1. Open the Code Sanitizer in your web browser
2. Paste your code into the input area
3. Select which types of data to sanitize (all enabled by default)
4. Click "Sanitize Code"
5. Review changes in the diff view
6. Copy the clean output to share safely

Example Usage

Before Sanitization:

const config = {
  apiKey: 'sk_live_51H9j4kL2Kk3j2k5k6k7k8k9',
  email: 'john.doe@company.com',
  dbUrl: 'mongodb://user:pass@cluster.mongodb.net/db',
};

After Sanitization:

const config = {
  apiKey: 'API_KEY_REDACTED',
  email: 'user@example.com',
  dbUrl: 'database://connection_redacted',
};

🔧 Configuration Options

Option	Description	Default
API Keys & Tokens	AWS, GitHub, Google, Stripe, JWT	✅ Enabled
Passwords	Password fields and secrets	✅ Enabled
Email Addresses	Personal and business emails	✅ Enabled
URLs & Domains	Web addresses and domains	✅ Enabled
IP Addresses	IPv4 and IPv6 addresses	✅ Enabled
File Paths	System file and directory paths	✅ Enabled
Database Strings	Connection strings and credentials	✅ Enabled
Personal Comments	TODO, FIXME, personal notes	❌ Disabled

🎯 Detection Patterns

API Keys & Tokens

• Generic API keys (20+ characters)
• AWS access keys (AKIA...)
• GitHub tokens (ghp_..., github_pat_...)
• Google API keys (AIza...)
• Stripe keys (sk_live_..., pk_live_...)
• JWT tokens (eyJ...)

Database Connections

• MongoDB connection strings
• PostgreSQL connection strings
• Redis connection strings
• MySQL connection strings
• Generic database URLs

Network Information

• HTTP/HTTPS URLs
• Domain names
• IPv4 addresses
• IPv6 addresses
• Internal network addresses

System Paths

• Windows paths (C:\Users\...)
• Unix/Linux paths (/home/..., /var/...)
• macOS paths (/Users/...)
• Relative paths (~/...)

🛡️ Security & Privacy

Client-Side Processing

• No data transmission: All processing happens in your browser
• No server uploads: Your code never leaves your device
• No logging: No sensitive data is stored or tracked
• Offline capable: Works without internet connection

Safe Replacements

• Maintains code structure and syntax
• Uses recognizable placeholder values
• Preserves variable names and logic
• Ensures code remains functional

💻 Technical Details

Built With

• Pure HTML, CSS, and JavaScript
• No external dependencies
• Modern browser features
• Responsive CSS Grid and Flexbox

Browser Support

• Chrome 88+
• Firefox 85+
• Safari 14+
• Edge 88+

File Size

• HTML: ~15KB
• No external resources required
• Loads instantly

🔄 Diff View Features

The diff view provides GitHub-style visualization of changes:

• Line numbers with +/- indicators
• Red highlighting for removed sensitive data
• Green highlighting for added safe replacements
• Unchanged lines shown in normal styling
• Scrollable container for long files
• Toggle between views (diff vs clean output)

📋 Use Cases

Before Sharing with AI

• ChatGPT code assistance
• Claude code review
• GitHub Copilot prompts
• Stack Overflow questions

Before Code Reviews

• Internal team reviews
• Open source contributions
• Documentation examples
• Tutorial content

Before Demos

• Client presentations
• Conference talks
• Video tutorials
• Blog posts

⚡ Performance

• Instant processing for files up to 10MB
• Real-time stats showing replacements made
• Memory efficient client-side processing
• No network latency concerns

💻 Python CLI Tool

Perfect for automation, CI/CD pipelines, and batch processing entire projects.

Features

• 🚀 Batch process multiple files and directories
• 🔄 Recursive directory scanning
• 🎯 Custom filename prefixes
• ⚙️ Selective sanitization (skip certain types)
• 📊 Detailed reporting with verbose mode
• 🌍 Multi-encoding support (UTF-8, Latin-1, etc.)
• 📁 40+ file extensions supported

Installation

# Download the CLI tool
wget <download-url>/code_sanitizer.py
# or
curl -O <download-url>/code_sanitizer.py

# Make it executable (optional)
chmod +x code_sanitizer.py

Basic Usage

# Sanitize a single file
python3 code_sanitizer.py app.py

# Sanitize with custom prefix
python3 code_sanitizer.py config.js --prefix "clean_"

# Process entire directory
python3 code_sanitizer.py src/ --recursive

# Multiple file patterns
python3 code_sanitizer.py "*.js" "*.html" "*.css"

Advanced Usage

# Skip certain types of sanitization
python3 code_sanitizer.py app.py --skip-comments --skip-emails

# Quiet mode (only show errors)
python3 code_sanitizer.py *.js --quiet

# Verbose mode (detailed output)
python3 code_sanitizer.py project/ --recursive --verbose

# Process specific file types
python3 code_sanitizer.py "*.jsx" "*.tsx" --prefix "safe_"

Output Example

🚀 Processing 15 file(s)...

============================================================
📄 CODE SANITIZER RESULTS
============================================================
✅ Successfully processed: 15 files
🔧 Total replacements made: 47
============================================================

Command Line Options

Option	Short	Description
--prefix	-p	Custom prefix for output files (default: sanitized_)
--recursive	-r	Process directories recursively
--skip-api-keys		Skip API keys and tokens
--skip-passwords		Skip passwords
--skip-emails		Skip email addresses
--skip-urls		Skip URLs and domains
--skip-ips		Skip IP addresses
--skip-paths		Skip file paths
--skip-db-strings		Skip database connection strings
--skip-comments		Skip personal comments
--quiet	-q	Suppress output except errors
--verbose	-v	Show detailed output

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⚠️ Important: Always review the diff output before sharing sanitized code to ensure all sensitive data has been properly removed and your code remains functional.