Web response audit
letsencrypt.org HTTP headers
SEO page with a cached HTTP response header and security signals check.
Results
Status
200
Final URL
https://letsencrypt.org
Accept-Ranges
bytes
Age
24947
Cache-Control
public,max-age=0,must-revalidate
Cache-Status
"Netlify Edge"; hit; ttl=31511053
Content-Security-Policy
default-src 'none'; font-src 'self' https://doublethedonation.com https://rsms.me http://rsms.me ; style-src 'self' 'unsafe-inline' https://donorbox.org https://doublethedonation.com https://rsms.me http://rsms.me ; script-src 'unsafe-eval' 'unsafe-inline' 'self' data: https://www.google-analytics.com https://www.googleadservices.com https://www.googletagmanager.com https://cdn.jsdelivr.net http://cdn.jsdelivr.net https://googleads.g.doubleclick.net https://donorbox.org https://doublethedonation.com https://js.stripe.com https://jspm.dev https://js.stripe.com/v3/ https://sdks.shopifycdn.com https://www.paypal.com https://www.paypalobjects.com https://widget.thegivingblock.com https://*.shift4.com ; img-src 'self' data: blob: https://www.google-analytics.com https://donorbox.org https://doublethedonation.com https://*.paypal.com https://www.paypalobjects.com https://ak2s.abmr.net https://ak1s.abmr.net https://www.google.com https://cdn.shopify.com https://v.shopify.com ; frame-src https://donorbox.org https://www.youtube.com https://www.youtube-nocookie.com https://bid.g.doubleclick.net https://js.stripe.com/v3/ https://js.stripe.com/v2/ https://www.paypal.com https://outreach.abetterinternet.org https://app.netlify.com https://widget.thegivingblock.com/ ; connect-src 'self' https://d4twhgtvn0ff5.cloudfront.net/ https://donorbox.org https://doublethedonation.com https://letsencrypt-merch.myshopify.com https://monorail-edge.shopifysvc.com https://www.paypal.com https://www.google-analytics.com ; frame-ancestors 'none';
Content-Type
text/html; charset=UTF-8
Date
Fri, 14 Aug 2026 22:36:06 GMT
Etag
"1674f00163d452d19535d04a8d1ae733-ssl-df"
Permissions-Policy
geolocation=(), midi=(), sync-xhr=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), fullscreen=(self), interest-cohort=()
Referrer-Policy
no-referrer
Server
Netlify
Strict-Transport-Security
max-age=31536000
Vary
Accept-Encoding
X-Content-Type-Options
nosniff
X-Frame-Options
DENY
X-Nf-Request-Id
01M016P4HW7BCXFMX39JFHYKTE
X-Xss-Protection
1; mode=block