Website readiness profile · Snapshot 23 October 2026
poshmark.ca
poshmark.ca's public homepage, certificate and DNS checked against 31 practices and compared with 5,718 E-Commerce & Marketplaces sites.
- Readiness index
- 76/100
- Ahead of
- 70%
- Practices observed
- 20/30
- Popularity band
- Top 50K
E-Commerce & Marketplaces median 71
of measured E-Commerce & Marketplaces sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: poshmark.ca. Thin bar: E-Commerce & Marketplaces peer median.
Enable
82/100
Peers 86
Harden
75/100
Peers 60
Accelerate
76/100
Peers 69
Recover
0/100
Peers 11
Priority fixes for poshmark.ca
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.
87% of E-Commerce & Marketplaces 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
Offscreen images lazy-loaded
Observed: The homepage had 89 images and none used loading="lazy".
What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.
72% of E-Commerce & Marketplaces peers do this.
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 poshmark.ca already does well
Practices fewer than half of E-Commerce & Marketplaces peers use.
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.32% of peers
- DMARC policy enforces quarantine or rejectDMARC policy p=reject.39% of peers
- No render-blocking scripts in <head>Head scripts load without blocking.44% of peers
What we saw
- Homepage checked
- https://poshmark.ca/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-03-14
- CDN or edge
- Amazon CloudFront
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 814 KB, br
- Images on homepage
- 89 (jpg 75, png 12, svg 2, webp 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
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Modern image formats in use
- No render-blocking scripts in <head>
- robots.txt published
- 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
Not measured 1
- Static files cached for 30 days or more
Own poshmark.ca?
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: poshmark.ca. This profile covers configuration only.