Website readiness profile · Snapshot 23 October 2026
bmstores.co.uk
bmstores.co.uk's public homepage, certificate and DNS checked against 31 practices and compared with 5,718 E-Commerce & Marketplaces sites.
- Readiness index
- 78/100
- Ahead of
- 78%
- Practices observed
- 23/31
- Popularity band
- Top 50K
E-Commerce & Marketplaces median 71
of measured E-Commerce & Marketplaces sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: bmstores.co.uk. Thin bar: E-Commerce & Marketplaces peer median.
Enable
100/100
Peers 86
Harden
78/100
Peers 60
Accelerate
60/100
Peers 69
Recover
0/100
Peers 11
Priority fixes for bmstores.co.uk
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 no max-age, 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.
60% of E-Commerce & Marketplaces peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 51 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.
47% of E-Commerce & Marketplaces peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · 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.
47% of E-Commerce & Marketplaces peers do this.
Priority 4 · Harden
Certificate lifetime of 100 days or less
Observed: The certificate from Amazon had a 197-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.
70% of E-Commerce & Marketplaces peers do this.
What bmstores.co.uk already does well
Practices fewer than half of E-Commerce & Marketplaces peers use.
- Referrer-Policy setReferrer-Policy present.20% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age.32% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=quarantine.39% of peers
What we saw
- Homepage checked
- https://www.bmstores.co.uk/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-04-06
- CDN or edge
- Amazon CloudFront
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days
- DMARC policy
- p=quarantine
- Homepage HTML
- 523 KB, br
- Images on homepage
- 51 (jpg 133, png 46)
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 8
Observed 23
- 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
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTML compressed
- 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
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own bmstores.co.uk?
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Live status for this site: Status Is Down: bmstores.co.uk. This profile covers configuration only.