Website readiness profile · Snapshot 23 October 2026
nanos.jp
nanos.jp's public homepage, certificate and DNS checked against 31 practices and compared with 38 Website Builders sites.
- Readiness index
- 38/100
- Ahead of
- 2.6%
- Practices observed
- 9/31
- Popularity band
- Top 50K
Website Builders median 64
of measured Website Builders sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: nanos.jp. Thin bar: Website Builders peer median.
Enable
56/100
Peers 81
Harden
38/100
Peers 58
Accelerate
20/100
Peers 63
Recover
0/100
Peers 5
Priority fixes for nanos.jp
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTTP/2 negotiated
Observed: The TLS handshake selected http/1.1 instead of HTTP/2.
Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.
What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.
89% of Website Builders peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 20 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.
62% of Website Builders peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · Harden
DMARC policy enforces quarantine or reject
Observed: No DMARC record was found at _dmarc.nanos.jp.
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.
61% of Website Builders peers do this.
Priority 4 · 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.
70% of Website Builders peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
What we saw
- Homepage checked
- https://nanos.jp/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, http/1.1
- Certificate
- GlobalSign, 396-day validity, expiring 2026-12-20
- DNS operators
- Amazon Route 53
- Homepage HTML
- 28 KB, gzip
- Images on homepage
- 20 (png 11, gif 8, svg 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 22
- 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
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Structured data present
- Social preview image set
- Nameservers spread across providers
Observed 9
- HTTP requests move to HTTPS
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- HTML compressed
- robots.txt published
- Meta description written
- Mobile viewport configured
- Page language declared
- At most one redirect to the homepage
Own nanos.jp?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: nanos.jp. This profile covers configuration only.