coinmaster.com

Readiness by lane

Green: coinmaster.com. Thin bar: Puzzles & Video Games peer median.

Priority fixes for coinmaster.com

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

1. 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.

   60% of Puzzles & Video Games 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

2. Priority 2 · Harden

   HSTS kept for at least a year

   Observed: Strict-Transport-Security was sent with a max-age of 180 days, below the one-year benchmark.

   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 Cloudflare: Enable HSTS under SSL/TLS > Edge Certificates > HTTP Strict Transport Security and raise max-age gradually.

   23% of Puzzles & Video Games peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 9 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.

   52% of Puzzles & Video Games peers do this.

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

4. Priority 4 · Harden

   Framing restricted

   Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.

   What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.

   On Cloudflare: Add the header with a response header transform rule.

   31% of Puzzles & Video Games peers do this.

   Guide: A Practical Website Health Check for Owners

What coinmaster.com already does well

Practices fewer than half of Puzzles & Video Games peers use.

• Content Security Policy presentContent-Security-Policy present.17% of peers
• DMARC policy enforces quarantine or rejectDMARC policy p=reject.21% of peers
• X-Content-Type-Options: nosniffnosniff header present.28% of peers

What we saw

Homepage checked

https://coinmaster.com/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, HTTP/2

Certificate

Google Trust Services, 90-day validity, expiring 2026-12-29

DNS operators

Cloudflare

HSTS

max-age 180 days, preload

DMARC policy

p=reject

Homepage HTML

1,224 KB, br

Images on homepage

0

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 Puzzles & Video Games sites

• boardgamearena.com69
• chess-samara.ru69
• magnitudle.com69
• nitrotype.com69
• solitar.io70

Puzzles & Video Games readiness benchmark