Website readiness profile · Snapshot 23 October 2026
flexmls.com
flexmls.com's public homepage, certificate and DNS checked against 31 practices and compared with 254 Real Estate & Property Listings sites.
- Readiness index
- 60/100
- Ahead of
- 29%
- Practices observed
- 17/31
- Popularity band
- Top 50K
Real Estate & Property Listings median 66
of measured Real Estate & Property Listings sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: flexmls.com. Thin bar: Real Estate & Property Listings peer median.
Enable
95/100
Peers 82
Harden
52/100
Peers 58
Accelerate
43/100
Peers 65
Recover
0/100
Peers 7
Priority fixes for flexmls.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
HTML compressed
Observed: The homepage HTML (308 KB) was delivered without gzip, Brotli or zstd compression.
Why it matters: Compression usually shrinks HTML several times over, so the first bytes of the page arrive sooner on slow connections.
What to do: Enable Brotli or gzip for text responses (HTML, CSS, JavaScript, JSON, SVG) at the CDN or origin.
On Fastly: Enable compression for text content types.
95% of Real Estate & Property Listings peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Guide: How to Set a Website Performance Budget That Teams Can Keep
Priority 2 · Harden
HSTS kept for at least a year
Observed: The homepage response did not include a Strict-Transport-Security header.
What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.
On Fastly: Add the header in VCL or a header rule as described in Fastly's HSTS guide.
43% of Real Estate & Property Listings peers do this.
Priority 3 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for no max-age, short of the 30-day benchmark.
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 WordPress: Caching plugins or your host can set long browser cache lifetimes for theme and plugin assets.
51% of Real Estate & Property Listings peers do this.
Priority 4 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 2 external scripts without async or defer.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
On WordPress: Since WordPress 6.3, scripts can be registered with a defer or async loading strategy.
49% of Real Estate & Property Listings peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
What we saw
- Homepage checked
- https://www.flexmls.com/
- Homepage response
- HTTP 200, after 1 redirect
- TLS
- TLSv1.3, HTTP/2
- Certificate
- ZeroSSL, 90-day validity, expiring 2026-12-03
- CDN or edge
- Fastly
- Platform or framework
- WordPress
- DNS operators
- NS1
- DMARC policy
- p=quarantine
- Homepage HTML
- 308 KB, uncompressed
- Images on homepage
- 21 (webp 92, png 3)
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 14
- HSTS kept for at least a year
- CAA records limit who can issue certificates
- DNSSEC signed
- security.txt published
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- Referrer-Policy set
- HTTP/3 advertised
- HTML compressed
- Static files cached for 30 days or more
- No render-blocking scripts in <head>
- Reachable over IPv6
- Nameservers spread across providers
Observed 17
- HTTP requests move to HTTPS
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- DMARC policy enforces quarantine or reject
- HTTP/2 negotiated
- Modern image formats in use
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- 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
Own flexmls.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: flexmls.com. This profile covers configuration only.