Generate Strict-Transport-Security headers with includeSubDomains and preload directives.
Typical values: 180 (testing), 31536000 seconds ≈ 365 days for preload.
Adds includeSubDomains directive.
Adds preload directive for Chrome preload list.
Keep a list of hosts where you'll deploy this header.
Lock your site to HTTPS and qualify for browser preload lists.
All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.