Website readiness profile · Snapshot 23 October 2026
karkkainen.com
karkkainen.com's public homepage, certificate and DNS checked against 31 practices and compared with 5,718 E-Commerce & Marketplaces sites.
- Readiness index
- 86/100
- Ahead of
- 98%
- Practices observed
- 24/31
- Popularity band
- Top 50K
E-Commerce & Marketplaces median 71
of measured E-Commerce & Marketplaces sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: karkkainen.com. Thin bar: E-Commerce & Marketplaces peer median.
Enable
87/100
Peers 86
Harden
78/100
Peers 60
Accelerate
100/100
Peers 69
Recover
0/100
Peers 11
Priority fixes for karkkainen.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · 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.
Why it matters: Under CA/Browser Forum Ballot SC-081v3, the maximum lifetime of public TLS certificates fell to 200 days on 15 March 2026 and falls to 100 days on 15 March 2027 and 47 days on 15 March 2029. Sites that renew by hand will need to renew far more often.
What to do: Move to automated issuance and renewal now, while you still have time to test it.
70% of E-Commerce & Marketplaces peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Enable
Structured data present
Observed: The homepage had no JSON-LD structured data.
What to do: Add JSON-LD for your organization and main content types, then test it with Google's Rich Results Test.
70% of E-Commerce & Marketplaces peers do this.
Priority 3 · Harden
CAA records limit who can issue certificates
Observed: No CAA record was found for karkkainen.com, so any public certificate authority may issue for it.
What to do: Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.
16% of E-Commerce & Marketplaces peers do this.
Priority 4 · Harden
security.txt published
Observed: No valid /.well-known/security.txt with a Contact field was returned.
What to do: Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.
7.6% of E-Commerce & Marketplaces peers do this.
What karkkainen.com already does well
Practices fewer than half of E-Commerce & Marketplaces peers use.
- Referrer-Policy setReferrer-Policy present.20% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.32% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.39% of peers
What we saw
- Homepage checked
- https://www.karkkainen.com/
- Homepage response
- HTTP 200, after 1 redirect
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-04-25
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Next.js
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 621 KB, gzip
- Images on homepage
- 82 (jpg 16, svg 2)
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 7
Observed 24
- 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
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- 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
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own karkkainen.com?
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: karkkainen.com. This profile covers configuration only.