Website readiness profile · Snapshot 23 October 2026
haveibeenpwned.com
haveibeenpwned.com's public homepage, certificate and DNS checked against 31 practices and compared with 46 Passwords & Cybersecurity sites.
- Readiness index
- 94/100
- Ahead of
- 98%
- Practices observed
- 28/30
- Popularity band
- Top 50K
Passwords & Cybersecurity median 76
of measured Passwords & Cybersecurity sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: haveibeenpwned.com. Thin bar: Passwords & Cybersecurity peer median.
Enable
100/100
Peers 82
Harden
100/100
Peers 69
Accelerate
83/100
Peers 64
Recover
0/100
Peers 2
Priority fixes for haveibeenpwned.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Modern image formats in use
Observed: The homepage had 4 images and none used WebP or AVIF.
Why it matters: WebP and AVIF are typically much smaller than JPEG or PNG at similar quality, and images are often the heaviest part of a page.
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.
On Cloudflare: Cloudflare Polish can convert images to WebP.
55% of Passwords & Cybersecurity peers do this. Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 2 · Recover
Nameservers spread across providers
Observed: All nameservers for haveibeenpwned.com belong to Cloudflare.
What to do: Treat this as an advanced step. Add a secondary DNS provider through zone transfers or a multi-provider setup, then test changes carefully, since both providers must stay in sync.
On Cloudflare: Cloudflare supports zone transfers for primary or secondary DNS setups on eligible plans.
2.2% of Passwords & Cybersecurity peers do this.
Guide: Website Uptime Readiness: Prepare Before Traffic Arrives
What haveibeenpwned.com already does well
Practices fewer than half of Passwords & Cybersecurity peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.24% of peers
- security.txt publishedsecurity.txt with a contact found.29% of peers
- HTTP/3 advertisedHTTP/3 advertised.33% of peers
What we saw
- Homepage checked
- https://haveibeenpwned.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Google Trust Services, 90-day validity, expiring 2027-01-14
- CDN or edge
- Cloudflare
- DNS operators
- Cloudflare
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 27 KB, br
- Images on homepage
- 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
Observed 28
- 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
- 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
- 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
Not measured 1
- Offscreen images lazy-loaded
Own haveibeenpwned.com?
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Live status for this site: Status Is Down: haveibeenpwned.com. This profile covers configuration only.