Website readiness profile · Snapshot 23 October 2026
openarchieven.nl
openarchieven.nl's public homepage, certificate and DNS checked against 31 practices and compared with 69 Family & Heritage sites.
- Readiness index
- 90/100
- Ahead of
- 99%
- Practices observed
- 26/29
- Popularity band
- Top 50K
Family & Heritage median 67
of measured Family & Heritage sites
2 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: openarchieven.nl. Thin bar: Family & Heritage peer median.
Enable
100/100
Peers 80
Harden
85/100
Peers 61
Accelerate
87/100
Peers 60
Recover
100/100
Peers 7
Priority fixes for openarchieven.nl
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 openarchieven.nl 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 · 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.
34% of Family & Heritage peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 3 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
31% of Family & Heritage peers do this.
What openarchieven.nl already does well
Practices fewer than half of Family & Heritage peers use.
- Nameservers spread across providersNameservers spread across more than one operator.7.2% of peers
- DNSSEC signedDNSSEC delegation (DS record) present.10% of peers
- security.txt publishedsecurity.txt with a contact found.12% of peers
What we saw
- Homepage checked
- https://www.openarchieven.nl/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Let's Encrypt, 89-day validity, expiring 2027-01-13
- DNS operators
- 3 self-run or other nameserver domains
- HSTS
- max-age 730 days, includeSubDomains, preload
- DMARC policy
- p=none
- Homepage HTML
- 21 KB, br
- Images on homepage
- 0
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 3
Observed 26
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- X-Content-Type-Options: nosniff
- Framing restricted
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- 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
- Nameservers spread across providers
Not measured 2
- Modern image formats in use
- Offscreen images lazy-loaded
Own openarchieven.nl?
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: openarchieven.nl. This profile covers configuration only.