Website readiness profile · Snapshot 23 October 2026
zillow.com
zillow.com's public homepage, certificate and DNS checked against 31 practices and compared with 254 Real Estate & Property Listings sites.
- Readiness index
- 75/100
- Ahead of
- 74%
- Practices observed
- 20/30
- Popularity band
- Top 1K
Real Estate & Property Listings median 66
of measured Real Estate & Property Listings sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: zillow.com. Thin bar: Real Estate & Property Listings peer median.
Enable
62/100
Peers 82
Harden
85/100
Peers 58
Accelerate
75/100
Peers 65
Recover
0/100
Peers 7
Priority fixes for zillow.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Enable
XML sitemap discoverable
Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.
Why it matters: A sitemap helps search engines find new and updated pages, especially on large or frequently updated sites.
What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.
74% of Real Estate & Property Listings peers do this. Limit: Only the standard location was requested, once, at the time of the check.
Guide: XML Sitemap Guide: Include Only URLs You Stand Behind
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 7 images and none used WebP or AVIF.
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 Next.js: The next/image component serves optimized formats automatically.
50% of Real Estate & Property Listings peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · 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.
65% of Real Estate & Property Listings peers do this.
Priority 4 · 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.
57% of Real Estate & Property Listings peers do this.
What zillow.com already does well
Practices fewer than half of Real Estate & Property Listings peers use.
- CAA records limit who can issue certificatesCAA limits issuance to awstrust.com.6.7% of peers
- Referrer-Policy setReferrer-Policy present.29% of peers
- Content Security Policy presentContent-Security-Policy present.30% of peers
What we saw
- Homepage checked
- https://www.zillow.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 393-day validity, expiring 2027-02-10
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Next.js
- DNS operators
- Amazon Route 53
- HSTS
- max-age 730 days, includeSubDomains, preload
- DMARC policy
- p=quarantine
- Homepage HTML
- 459 KB, br
- Images on homepage
- 7 (jpg 9, svg 5, gif 1)
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 20
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Page language declared
- At most one redirect to the homepage
Not measured 1
- robots.txt published
Own zillow.com?
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: zillow.com. This profile covers configuration only.