transfermarkt.com.ar

Readiness by lane

Green: transfermarkt.com.ar. Thin bar: Data & Analytics peer median.

Priority fixes for transfermarkt.com.ar

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Amazon CloudFront: Attach a response headers policy with Strict-Transport-Security to each distribution.

   34% of Data & Analytics peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Enable

   XML sitemap discoverable

   Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.

   What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.

   63% of Data & Analytics peers do this.

   Guide: XML Sitemap Guide: Include Only URLs You Stand Behind

3. Priority 3 · Harden

   DMARC policy enforces quarantine or reject

   Observed: No DMARC record was found at _dmarc.transfermarkt.com.ar.

   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.

   38% of Data & Analytics peers do this.

   Guide: A Practical Website Health Check for Owners

4. Priority 4 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 10 external scripts without async or defer.

   What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

   54% of Data & Analytics peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

What transfermarkt.com.ar already does well

Practices fewer than half of Data & Analytics peers use.

• CAA records limit who can issue certificatesCAA limits issuance to letsencrypt.org.15% of peers
• Modern image formats in useWebP or AVIF images detected.31% of peers
• Structured data presentJSON-LD structured data found.43% of peers

What we saw

Homepage checked

https://www.transfermarkt.com.ar/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Let's Encrypt, 89-day validity, expiring 2026-12-23

CDN or edge

Amazon CloudFront

DNS operators

ClouDNS

Homepage HTML

181 KB, gzip

Images on homepage

102 (png 24, svg 19, jpg 14, webp 6)

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

Compare with other Data & Analytics sites

• boxofficemojo.com52
• footylogic.com53
• insightexpress.com54
• pmnpis.org.ph52
• rxnvg.com55

Data & Analytics readiness benchmark