Website readiness profile · Snapshot 23 October 2026
stern.de
stern.de's public homepage, certificate and DNS checked against 31 practices and compared with 3,856 News & Media sites.
- Readiness index
- 75/100
- Ahead of
- 76%
- Practices observed
- 21/31
- Popularity band
- Top 5K
News & Media median 68
of measured News & Media sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: stern.de. Thin bar: News & Media peer median.
Enable
74/100
Peers 89
Harden
77/100
Peers 56
Accelerate
75/100
Peers 68
Recover
0/100
Peers 11
Priority fixes for stern.de
Ordered by impact and by how common each practice is among peers.
Priority 1 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
Why it matters: A sitemap helps search engines find new and updated pages, especially on large or frequently updated sites.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
87% of News & Media peers do this. Limit: Only the standard location was requested, once, at the time of the check.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 127 images and none used WebP or AVIF.
What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.
44% of News & Media peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for stern.de was p=none, which asks receivers to take no action on failing mail.
What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
37% of News & Media peers do this.
Priority 4 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
71% of News & Media peers do this.
What stern.de already does well
Practices fewer than half of News & Media peers use.
- CAA records limit who can issue certificatesCAA limits issuance to amazon.com, digicert.com, letsencrypt.org and others.13% of peers
- Content Security Policy presentContent-Security-Policy present.29% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.35% of peers
What we saw
- Homepage checked
- https://www.stern.de/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2026-11-25
- CDN or edge
- Akamai
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=none
- Homepage HTML
- 458 KB, gzip
- Images on homepage
- 127 (jpg 182, png 1, gif 1)
Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.
Stack and providers
Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.
All 31 checks
Select a gap for the method and fix. How each check works
Not observed 10
Observed 21
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- robots.txt published
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Page language declared
- At most one redirect to the homepage
Own stern.de?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: stern.de. This profile covers configuration only.