Security Utilities
Protect your applications and data with our suite of free, privacy-first security tools. All processing happens in your browser—your sensitive data is never uploaded to our servers.
Password, Passphrase & PIN Generator
Generate secure passwords, memorable passphrases, or numeric PINs with leet speak, entropy meter, and advanced modifiers.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes for text and data verification.
Homoglyph Detector
Detect IDN homograph attacks, phishing attempts, and Unicode spoofing in text and URLs.
Safe Filename Generator
Sanitize filenames by removing forbidden characters and ensuring cross-platform compatibility.
Email Header Analyzer
Parse email headers to analyze routing hops, delay, and SPF/DKIM/DMARC authentication results.
Why Use Security Utilities?
Security vulnerabilities often hide in plain sight. Homoglyph attacks use visually similar characters to create fake URLs (e.g., аpple.com using Cyrillic 'а' instead of Latin 'a'). Unsafe filenames can cause path traversal attacks or break across different operating systems.
Our security utilities help you:
- Detect Phishing: Identify homoglyph attacks in URLs and domain names
- Sanitize Input: Clean filenames to prevent path traversal and injection attacks
- Ensure Compatibility: Generate filenames that work across Windows, macOS, and Linux
- Maintain Privacy: All processing happens client-side—no data sent to servers
Common Security Threats We Help Prevent
IDN Homograph Attacks
Attackers register domains using Unicode characters that look identical to legitimate sites. Our Homoglyph Detector identifies these threats before users fall victim to phishing.
Path Traversal Attacks
Malicious filenames like ../../etc/passwd can access sensitive system files. Our Safe Filename Generator removes dangerous characters and path sequences.
Cross-Platform Filename Issues
Windows reserves names like CON, NUL, and AUX. Files with these names cause errors. Our tools detect and fix these issues automatically.
Frequently Asked Questions
Are these tools really free?
Yes, completely free with no hidden costs, registration, or usage limits. All tools run in your browser.
Is my data secure?
Yes. All processing happens client-side using JavaScript, so your data is never uploaded to our servers. We don't store or share your personal information — like most websites, our server logs record visitor IP addresses for basic security and abuse prevention, but that's unrelated to your data. See our Privacy Policy for details.
Can I use these tools offline?
Yes! Once the page loads, our PWA (Progressive Web App) allows you to use these tools completely offline.