• The Complete Privacy Audit: What the Internet Knows About You
  • Layer 1: Your IP Address
  • Layer 2: HTTP Headers
  • Layer 3: Browser Fingerprinting
  • Layer 4: DNS Queries
  • Layer 5: Your Passwords
  • How to Protect Yourself
  • All Tools

§The Complete Privacy Audit: What the Internet Knows About You

Every time you open a browser, you leave a trail. Here’s exactly what gets exposed — and how to check it yourself.

§Layer 1: Your IP Address

Your IP address reveals:

• Your approximate city and region
• Your Internet Service Provider
• Whether you’re on a VPN or residential connection
• Your network type (mobile, fiber, cable)

Check yours: What’s My IP

§Layer 2: HTTP Headers

Every HTTP request your browser makes includes headers that reveal:

• User-Agent: Your exact browser version, OS, and device type
• Accept-Language: Your language and regional preferences
• Referer: The last page you visited
• Cookies: Session tracking data

Check yours: HTTP Headers Inspector

§Layer 3: Browser Fingerprinting

Even without cookies, websites can identify you through:

• Canvas fingerprint: A unique hash from how your GPU renders graphics
• WebGL: Your GPU model and driver version
• Fonts: The list of installed fonts (surprisingly unique)
• Screen: Resolution, color depth, pixel ratio
• Battery: Yes, websites can see your battery level
• WebRTC: Can leak your real IP even behind a VPN

Check yours: Browser Privacy Check

§Layer 4: DNS Queries

Your DNS queries tell your ISP every domain you visit. Even with a VPN, DNS can leak:

• Misconfigured VPN split tunneling
• DNS-over-HTTPS not enabled
• VPN app bugs

Check yours: DNS Leak Test

§Layer 5: Your Passwords

The weakest link is often your password:

• Common passwords are cracked in milliseconds
• Length matters more than complexity
• Keyboard patterns (qwerty, 12345) are detected instantly

Check yours: Password Strength Checker (100% client-side, nothing leaves your browser)

§How to Protect Yourself

1. Use a VPN with DNS leak protection enabled
2. Use Firefox with Enhanced Tracking Protection
3. Install uBlock Origin to block trackers
4. Enable DNS-over-HTTPS in your browser
5. Use unique passwords with a password manager
6. Check for WebRTC leaks and disable if not needed
7. Use container tabs to isolate sessions
8. Clear cookies regularly or use temporary containers

§All Tools

All the tools mentioned above are free, open, and respect your privacy. No accounts, no tracking, no ads.

• What’s My IP
• HTTP Headers Inspector
• Browser Privacy Check
• DNS Leak Test
• Password Strength Checker
• Website Security Scanner

Built by DevToolKit. Tips welcome via Lightning: devtoolkit@coinos.io ⚡