Website readiness profile · Snapshot 23 October 2026
ticketjam.jp
ticketjam.jp's public homepage, certificate and DNS checked against 31 practices and compared with 387 Events & Online Ticketing sites.
- Readiness index
- 76/100
- Ahead of
- 82%
- Practices observed
- 21/31
- Popularity band
- Top 10K
Events & Online Ticketing median 63
of measured Events & Online Ticketing sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: ticketjam.jp. Thin bar: Events & Online Ticketing peer median.
Enable
95/100
Peers 78
Harden
72/100
Peers 57
Accelerate
68/100
Peers 59
Recover
0/100
Peers 7
Priority fixes for ticketjam.jp
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 2 external scripts without async or defer.
Why it matters: A plain <script src> in the head stops the browser from showing anything until that file has downloaded and run.
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.
35% of Events & Online Ticketing peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 2 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 25 images and none used loading="lazy".
What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.
54% of Events & Online Ticketing peers do this.
Priority 3 · Harden
Content Security Policy present
Observed: The homepage response did not include a Content-Security-Policy header.
What to do: Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.
30% of Events & Online Ticketing peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 4 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from Amazon had a 197-day validity period, longer than the 100-day maximum that applies from March 2027.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
52% of Events & Online Ticketing peers do this.
What ticketjam.jp already does well
Practices fewer than half of Events & Online Ticketing peers use.
- Referrer-Policy setReferrer-Policy present.28% of peers
- HSTS kept for at least a yearHSTS with a 730-day max-age.42% of peers
- Modern image formats in useWebP or AVIF images detected.42% of peers
What we saw
- Homepage checked
- https://ticketjam.jp/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2026-12-29
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- HSTS
- max-age 730 days
- DMARC policy
- p=reject
- Homepage HTML
- 138 KB, gzip
- Images on homepage
- 25 (png 8, webp 4, svg 4)
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 10
Observed 21
- 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
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- Modern image formats in use
- 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 ticketjam.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: ticketjam.jp. This profile covers configuration only.