Website readiness profile · Snapshot 23 October 2026
cosme.net
cosme.net's public homepage, certificate and DNS checked against 31 practices and compared with 190 Ratings & Reviews sites.
- Readiness index
- 59/100
- Ahead of
- 30%
- Practices observed
- 14/29
- Popularity band
- Top 5K
Ratings & Reviews median 66
of measured Ratings & Reviews sites
2 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: cosme.net. Thin bar: Ratings & Reviews peer median.
Enable
71/100
Peers 82
Harden
48/100
Peers 54
Accelerate
71/100
Peers 68
Recover
0/100
Peers 6
Priority fixes for cosme.net
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.
72% of Ratings & Reviews 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 · Harden
HSTS kept for at least a year
Observed: The homepage response did not include a Strict-Transport-Security header.
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.
31% of Ratings & Reviews peers do this.
Priority 3 · Accelerate
Modern image formats in use
Observed: The homepage had 34 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.
On Nuxt: Nuxt Image can output WebP and AVIF.
37% of Ratings & Reviews peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
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 Amazon CloudFront: Set frame options in a response headers policy.
47% of Ratings & Reviews peers do this.
What cosme.net already does well
Practices fewer than half of Ratings & Reviews peers use.
- DMARC policy enforces quarantine or rejectDMARC policy p=reject.37% of peers
What we saw
- Homepage checked
- https://www.cosme.net/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-05-05
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Nuxt
- DNS operators
- Amazon Route 53
- DMARC policy
- p=reject
- Homepage HTML
- 283 KB, gzip
- Images on homepage
- 34 (jpg 25, png 9)
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 15
- HSTS kept for at least a year
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/3 advertised
- Modern image formats in use
- XML sitemap discoverable
- Reachable over IPv6
- Social preview image set
- Nameservers spread across providers
Observed 14
- HTTP requests move to HTTPS
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- HTTP/2 negotiated
- HTML compressed
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Page language declared
- At most one redirect to the homepage
Not measured 2
- Static files cached for 30 days or more
- robots.txt published
Own cosme.net?
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: cosme.net. This profile covers configuration only.