Website readiness profile · Snapshot 23 October 2026
tokyo-sports.co.jp
tokyo-sports.co.jp's public homepage, certificate and DNS checked against 31 practices and compared with 3,856 News & Media sites.
- Readiness index
- 65/100
- Ahead of
- 38%
- Practices observed
- 18/31
- Popularity band
- Top 5K
News & Media median 68
of measured News & Media sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: tokyo-sports.co.jp. Thin bar: News & Media peer median.
Enable
95/100
Peers 89
Harden
60/100
Peers 56
Accelerate
48/100
Peers 68
Recover
0/100
Peers 11
Priority fixes for tokyo-sports.co.jp
Ordered by impact and by how common each practice is among peers.
Priority 1 · 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.
Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.
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.
60% of News & Media peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 242 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.
44% of News & Media peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for tokyo-sports.co.jp was p=none, which asks receivers to take no action on failing mail.
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.
37% of News & Media peers do this.
Priority 4 · 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.
42% of News & Media peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
What tokyo-sports.co.jp already does well
Practices fewer than half of News & Media peers use.
- HSTS kept for at least a yearHSTS with a 365-day max-age.35% of peers
- X-Content-Type-Options: nosniffnosniff header present.42% of peers
- Framing restrictedFraming controls present.42% of peers
What we saw
- Homepage checked
- https://www.tokyo-sports.co.jp/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- GlobalSign, 199-day validity, expiring 2026-12-27
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days
- DMARC policy
- p=none
- Homepage HTML
- 369 KB, gzip
- Images on homepage
- 242 (gif 135, svg 98, jpg 8, png 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 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
- Referrer-Policy set
- HTTP/3 advertised
- Static files cached for 30 days or more
- Modern image formats in use
- No render-blocking scripts in <head>
- Reachable over IPv6
- Nameservers spread across providers
Observed 18
- 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
- HTTP/2 negotiated
- HTML compressed
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own tokyo-sports.co.jp?
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: tokyo-sports.co.jp. This profile covers configuration only.