Website readiness profile · Snapshot 23 October 2026
smartsitter.jp
smartsitter.jp's public homepage, certificate and DNS checked against 31 practices and compared with 69 Family & Heritage sites.
- Readiness index
- 66/100
- Ahead of
- 43%
- Practices observed
- 17/30
- Popularity band
- Top 50K
Family & Heritage median 67
of measured Family & Heritage sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: smartsitter.jp. Thin bar: Family & Heritage peer median.
Enable
77/100
Peers 80
Harden
63/100
Peers 61
Accelerate
62/100
Peers 60
Recover
0/100
Peers 7
Priority fixes for smartsitter.jp
Ordered by impact and by how common each practice is among peers.
Priority 1 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for smartsitter.jp was p=none, which asks receivers to take no action on failing mail.
Why it matters: An enforcing DMARC policy helps receiving mail systems reject email that falsely claims to come from your domain, a common route for phishing your customers.
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.
46% of Family & Heritage peers do this. Limit: Read from public DNS at the time of the check; records may have changed since.
Priority 2 · Enable
Canonical URL declared
Observed: The homepage did not declare a canonical URL.
What to do: Add a self-referencing canonical link to every indexable page, using the final https:// URL.
75% of Family & Heritage peers do this.
Priority 3 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 1 external script 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.
39% of Family & Heritage peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 4 · Enable
Page language declared
Observed: The homepage <html> element had no lang attribute.
What to do: Set lang on the html element (for example lang="en") and on any sections in another language.
97% of Family & Heritage peers do this.
What smartsitter.jp already does well
Practices fewer than half of Family & Heritage peers use.
- Modern image formats in useWebP or AVIF images detected.25% of peers
- Referrer-Policy setReferrer-Policy present.33% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age.43% of peers
What we saw
- Homepage checked
- https://smartsitter.jp/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 393-day validity, expiring 2027-02-03
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days
- DMARC policy
- p=none
- Homepage HTML
- 50 KB, gzip
- Images on homepage
- 54 (png 42, webp 14)
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 13
- 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
- Content Security Policy present
- HTTP/3 advertised
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- Reachable over IPv6
- Canonical URL declared
- Page language declared
- Nameservers spread across providers
Observed 17
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- X-Content-Type-Options: nosniff
- Framing restricted
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Modern image formats in use
- robots.txt published
- XML sitemap discoverable
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- At most one redirect to the homepage
Not measured 1
- Static files cached for 30 days or more
Own smartsitter.jp?
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Live status for this site: Status Is Down: smartsitter.jp. This profile covers configuration only.