Website readiness profile · Snapshot 23 October 2026
dcplan.co.jp
dcplan.co.jp's public homepage, certificate and DNS checked against 31 practices and compared with 203 Insurance & Financial Planning sites.
- Readiness index
- 47/100
- Ahead of
- 9.4%
- Practices observed
- 12/31
- Popularity band
- Top 50K
Insurance & Financial Planning median 69
of measured Insurance & Financial Planning sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: dcplan.co.jp. Thin bar: Insurance & Financial Planning peer median.
Enable
26/100
Peers 81
Harden
78/100
Peers 64
Accelerate
20/100
Peers 60
Recover
0/100
Peers 19
Priority fixes for dcplan.co.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.
80% of Insurance & Financial Planning peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Enable
robots.txt published
Observed: No robots.txt file was returned at the site root.
What to do: Publish /robots.txt with any crawl rules you need and a Sitemap: line pointing to your XML sitemap.
86% of Insurance & Financial Planning peers do this.
Guide: Robots.txt Guide: Control Crawling Without Hiding Mistakes
Priority 3 · 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.
81% of Insurance & Financial Planning peers do this.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 4 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 7 days, short of the 30-day benchmark.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
51% of Insurance & Financial Planning peers do this.
What dcplan.co.jp already does well
Practices fewer than half of Insurance & Financial Planning peers use.
- Referrer-Policy setReferrer-Policy present.39% of peers
What we saw
- Homepage checked
- https://www.dcplan.co.jp/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, http/1.1
- Certificate
- Cybertrust Japan Co., Ltd., 189-day validity, expiring 2027-02-01
- DNS operators
- Akamai Edge DNS
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 43 KB, gzip
- Images on homepage
- 26 (gif 14, png 10)
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 19
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- 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>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Structured data present
- Social preview image set
- Page language declared
- Nameservers spread across providers
Observed 12
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTML compressed
- Mobile viewport configured
- At most one redirect to the homepage
Own dcplan.co.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: dcplan.co.jp. This profile covers configuration only.