Cookie Guidelines

Updated: September 28, 2025

Cookies in 10 Seconds

Cookies = tiny files that remember stuff.

Like "this user prefers dark mode" or "they already ran this test." That's it. No spying, no selling data, just making CZNull work better for you.

What Cookies We Use

Must-Have Cookies

These keep the site working. Can't turn them off.

Session Management
  • • Unique session identifier
  • • CSRF protection tokens
  • • Request validation
Security Features
  • • Cross-site scripting prevention
  • • Secure connection verification
  • • Rate limiting counters
Core Functionality
  • • WebGL context preservation
  • • Test state management
  • • Error recovery tokens

Test Result Cookies

Remember your benchmark scores so you can compare them.

Score History
  • • FPS results for each test
  • • Completion timestamps
  • • Performance percentiles
  • • GPU temperature readings (if available)
Test Metadata
  • • Test configuration settings
  • • Resolution and quality presets
  • • Browser and driver info
  • • System resource usage
Comparison Data
  • • Previous run comparisons
  • • Performance trends over time
  • • Hardware upgrade impact tracking

Preference Cookies

Remember what you like.

  • Dark mode on/off
  • Language (if we add more)
  • Test settings

Stats Cookies

Help us see what's popular (anonymously).

  • Which tests get used most
  • Where people click
  • What breaks (so we can fix it)

Your Cookie Control

You're the boss of your cookies:

  • Browser Settings: Every browser lets you block cookies.
    • Chrome: Settings → Privacy and Security → Cookies
    • Firefox: Settings → Privacy & Security → Cookies
    • Safari: Preferences → Privacy → Manage Website Data
    • Edge: Settings → Privacy, Search & Services → Cookies
  • Clear Anytime: Delete cookies whenever you want.
    • Ctrl/Cmd + Shift + Delete opens clear data dialog
    • Select "Cookies and site data"
    • Choose time range (recommend "All time")
    • Your CZNull data resets to fresh
  • We Respect "Do Not Track": Turn it on in your browser, we'll back off.
    • No analytics cookies when DNT is on
    • Minimal functionality cookies only
    • No third-party tracking allowed
    • Your privacy preference honored

FYI: Blocking all cookies might make some stuff not work right. Your call though.

Other People's Cookies

Some cookies come from other services we use:

  • Analytics (to see what's working)
  • CDN (to load faster)
  • WebGL stuff (for the actual tests)

We pick partners who respect privacy, but check their policies if you're curious.

Changes

If we change this cookie policy, we'll update it here. No sneaky stuff.

Questions?

Cookie questions? Just ask:

Email: support@cznull.app

Site: https://cznull.app

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