Nginx Security & Performance Fixes

Nginx fronts a huge share of APIs and static sites. HttpFixer targets Nginx for security headers (guide), CORS (guide), CSP (guide), cache headers (guide), and PageSpeed-oriented tuning (guide).

Use HeadersFixer and CORSFixer against public URLs to capture real header and preflight behavior before editing nginx.conf. EdgeFix validates Cache-Control after changes; SpeedFixer maps Core Web Vitals gaps to concrete directives.