STATUS IS UPWEBSITE READINESS
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Category benchmark · Snapshot 23 October 2026

Website Builders: website readiness

31 configuration checks across 38 Website Builders sites from the SID website catalog, with 26 individual profiles for sites in the Chrome UX Report top 50K.

Sites measured
38

all popularity bands

Median readiness index
64/100

all sites: 64

Profiles
26

top-50K sites

Weakest lane
Recover

lowest weighted score

Readiness by lane

Enable

81/100

All sites 77

Harden

58/100

All sites 56

Accelerate

63/100

All sites 64

Recover

5/100

All sites 10

Biggest gaps for Website Builders sites

The checks with the most room to improve, weighted by impact.

  1. HSTS kept for at least a year

    26% observed · all sites 34%

    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.

    Guide: HTTPS and TLS Guide for Website Owners

  2. Static files cached for 30 days or more

    42% observed · all sites 51%

    Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

    Guide: Browser Caching Guide for Website Owners

  3. CAA records limit who can issue certificates

    16% observed · all sites 13%

    Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.

    Guide: HTTPS and TLS Guide for Website Owners

  4. security.txt published

    16% observed · all sites 7.1%

    Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.

    Guide: A Practical Website Health Check for Owners

  5. No render-blocking scripts in <head>

    34% observed · all sites 48%

    Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.

    Guide: Control Third-Party Scripts Before They Control Your Page

  6. Content Security Policy present

    26% observed · all sites 32%

    Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.

    Guide: Payment Security and PCI DSS: What Website Owners Need to Know

Where Website Builders sites lead

  • DMARC policy enforces quarantine or reject61% observedall sites 39%
  • Modern image formats in use62% observedall sites 40%
  • Social preview image set74% observedall sites 57%
  • robots.txt published89% observedall sites 76%

Stack mix

CDN and edge

Platform or framework

DNS operator

Certificate authority

Readiness leaders

Website Builders sites in the top 50K with the highest share of observed practices (at least 26 of 31 checks measured). This lists only what we observed on 23 October 2026; owners can request a correction.

  1. framer.com88/100
  2. msha.ke86/100
  3. webflow.com82/100
  4. wordpress.org80/100
  5. bolt.new79/100
  6. webnode.com79/100
  7. wix.com76/100
  8. squarespace.com74/100
  9. wfolio.ru74/100
  10. neocities.org73/100

All 31 checks for Website Builders

CheckLaneObservedAll sitesMeasured
HTTP requests move to HTTPSHarden97%91%35
HSTS kept for at least a yearHarden26%34%38
TLS 1.3 negotiatedHarden92%91%38
Certificate has more than 14 days leftHarden100%99%38
Certificate lifetime of 100 days or lessHarden76%67%38
CAA records limit who can issue certificatesHarden16%13%38
DNSSEC signedHarden7.9%8%38
security.txt publishedHarden16%7.1%37
DMARC policy enforces quarantine or rejectHarden61%39%38
X-Content-Type-Options: nosniffHarden39%48%38
Framing restrictedHarden42%51%38
Content Security Policy presentHarden26%32%38
Referrer-Policy setHarden29%24%38
HTTP/2 negotiatedAccelerate89%90%38
HTTP/3 advertisedAccelerate29%37%38
HTML compressedAccelerate92%93%38
Static files cached for 30 days or moreAccelerate42%51%26
Modern image formats in useAccelerate62%40%34
Offscreen images lazy-loadedAccelerate61%62%33
No render-blocking scripts in <head>Accelerate34%48%38
robots.txt publishedEnable89%76%38
XML sitemap discoverableEnable70%70%37
Reachable over IPv6Enable26%48%38
Canonical URL declaredEnable71%68%38
Meta description writtenEnable95%84%38
Mobile viewport configuredEnable100%94%38
Structured data presentEnable53%51%38
Social preview image setEnable74%57%38
Page language declaredEnable87%90%38
At most one redirect to the homepageEnable97%98%38
Nameservers spread across providersRecover5.3%10%38

Website Builders profiles

Readiness index shown next to each site.