Website readiness profile · Snapshot 23 October 2026
blackcircles.com
blackcircles.com's public homepage, certificate and DNS checked against 31 practices and compared with 703 Cars & Automotive sites.
- Readiness index
- 77/100
- Ahead of
- 80%
- Practices observed
- 22/31
- Popularity band
- Top 50K
Cars & Automotive median 66
of measured Cars & Automotive sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: blackcircles.com. Thin bar: Cars & Automotive peer median.
Enable
92/100
Peers 84
Harden
72/100
Peers 57
Accelerate
75/100
Peers 65
Recover
0/100
Peers 14
Priority fixes for blackcircles.com
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.
On Cloudflare: Use Cache Rules to set edge and browser TTLs for static file paths.
55% of Cars & Automotive peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
62% of Cars & Automotive 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.
31% of Cars & Automotive 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 Sectigo Limited had a 391-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.
58% of Cars & Automotive peers do this.
What blackcircles.com already does well
Practices fewer than half of Cars & Automotive peers use.
- Referrer-Policy setReferrer-Policy present.26% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.41% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=reject.41% of peers
What we saw
- Homepage checked
- https://www.blackcircles.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Sectigo, 391-day validity, expiring 2026-12-23
- CDN or edge
- Cloudflare
- DNS operators
- Cloudflare
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=reject
- Homepage HTML
- 262 KB, br
- Images on homepage
- 70 (svg 44, webp 36, jpg 12, png 9)
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 9
Observed 22
- 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
- Modern image formats in use
- Offscreen images lazy-loaded
- 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
- Page language declared
- At most one redirect to the homepage
Own blackcircles.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: blackcircles.com. This profile covers configuration only.