Website readiness profile · Snapshot 23 October 2026
msdmanuals.com
msdmanuals.com's public homepage, certificate and DNS checked against 31 practices and compared with 613 Fitness & Health sites.
- Readiness index
- 78/100
- Ahead of
- 84%
- Practices observed
- 22/31
- Popularity band
- Top 10K
Fitness & Health median 67
of measured Fitness & Health sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: msdmanuals.com. Thin bar: Fitness & Health peer median.
Enable
95/100
Peers 82
Harden
69/100
Peers 59
Accelerate
75/100
Peers 63
Recover
100/100
Peers 10
Priority fixes for msdmanuals.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 36 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 Next.js: The next/image component serves optimized formats automatically.
45% of Fitness & Health 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 · Harden
Framing restricted
Observed: The homepage did not send frame-ancestors or X-Frame-Options, so other sites may frame it.
What to do: Send Content-Security-Policy: frame-ancestors 'self' (or a list of trusted origins). X-Frame-Options: SAMEORIGIN covers older browsers.
On Amazon CloudFront: Set frame options in a response headers policy.
58% of Fitness & Health peers do this.
Priority 3 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from Amazon had a 393-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.
59% of Fitness & Health peers do this.
Priority 4 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
On Amazon CloudFront: Select HTTP/3 in the distribution's supported HTTP versions.
29% of Fitness & Health peers do this.
What msdmanuals.com already does well
Practices fewer than half of Fitness & Health peers use.
- Nameservers spread across providersNameservers spread across more than one operator.9.9% of peers
- Content Security Policy presentContent-Security-Policy present.38% of peers
- HSTS kept for at least a yearHSTS with a 730-day max-age covering subdomains.43% of peers
What we saw
- Homepage checked
- https://www.msdmanuals.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 393-day validity, expiring 2027-02-20
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Next.js, Sitecore
- DNS operators
- NS1, plus 1 self-run or other nameserver domain
- HSTS
- max-age 730 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 128 KB, gzip
- Images on homepage
- 36 (png 22, svg 10, gif 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 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
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Static files cached for 30 days or more
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- 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
- Nameservers spread across providers
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Live status for this site: Status Is Down: msdmanuals.com. This profile covers configuration only.