Website readiness profile · Snapshot 23 October 2026
carsales.com.au
carsales.com.au's public homepage, certificate and DNS checked against 31 practices and compared with 703 Cars & Automotive sites.
- Readiness index
- 79/100
- Ahead of
- 84%
- Practices observed
- 21/30
- Popularity band
- Top 10K
Cars & Automotive median 66
of measured Cars & Automotive sites
1 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: carsales.com.au. Thin bar: Cars & Automotive peer median.
Enable
87/100
Peers 84
Harden
82/100
Peers 57
Accelerate
71/100
Peers 65
Recover
0/100
Peers 14
Priority fixes for carsales.com.au
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Modern image formats in use
Observed: The homepage had 23 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.
47% of Cars & Automotive 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 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 23 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.
64% of Cars & Automotive peers do this.
Priority 3 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
62% of Cars & Automotive 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.
58% of Cars & Automotive peers do this.
What carsales.com.au already does well
Practices fewer than half of Cars & Automotive peers use.
- CAA records limit who can issue certificatesCAA limits issuance to amazon.com, amazonaws.com, digicert.com and others.7.8% of peers
- HTTP/3 advertisedHTTP/3 advertised.30% of peers
- Content Security Policy presentContent-Security-Policy present.31% of peers
What we saw
- Homepage checked
- https://www.carsales.com.au/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Amazon, 197-day validity, expiring 2027-01-22
- CDN or edge
- Amazon CloudFront
- Platform or framework
- Next.js
- DNS operators
- Amazon Route 53
- HSTS
- max-age 365 days, includeSubDomains, preload
- DMARC policy
- p=reject
- Homepage HTML
- 366 KB, gzip
- Images on homepage
- 23 (png 17, svg 6)
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 21
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- CAA records limit who can issue certificates
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTTP/3 advertised
- HTML compressed
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Page language declared
- At most one redirect to the homepage
Not measured 1
- Static files cached for 30 days or more
Own carsales.com.au?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: carsales.com.au. This profile covers configuration only.