Website readiness profile · Snapshot 23 October 2026
auchan.fr
auchan.fr's public homepage, certificate and DNS checked against 31 practices and compared with 5,718 E-Commerce & Marketplaces sites.
- Readiness index
- 81/100
- Ahead of
- 88%
- Practices observed
- 22/29
- Popularity band
- Top 5K
E-Commerce & Marketplaces median 71
of measured E-Commerce & Marketplaces sites
2 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: auchan.fr. Thin bar: E-Commerce & Marketplaces peer median.
Enable
85/100
Peers 86
Harden
91/100
Peers 60
Accelerate
63/100
Peers 69
Recover
100/100
Peers 11
Priority fixes for auchan.fr
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Modern image formats in use
Observed: The homepage had 58 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.
47% of E-Commerce & Marketplaces 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 58 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
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 2 external scripts without async or defer.
What to do: Add defer to scripts that need the DOM, async to independent ones such as analytics, or move them to the end of the body.
44% of E-Commerce & Marketplaces peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 4 · 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.
60% of E-Commerce & Marketplaces peers do this.
What auchan.fr already does well
Practices fewer than half of E-Commerce & Marketplaces peers use.
- security.txt publishedsecurity.txt with a contact found.7.6% of peers
- Nameservers spread across providersNameservers spread across more than one operator.11% of peers
- CAA records limit who can issue certificatesCAA limits issuance to amazonaws.com, globalsign.com, letsencrypt.org and others.16% of peers
What we saw
- Homepage checked
- https://www.auchan.fr/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- Google Trust Services, 90-day validity, expiring 2027-01-11
- CDN or edge
- Google edge
- DNS operators
- 2 self-run or other nameserver domains
- HSTS
- max-age 730 days, includeSubDomains
- DMARC policy
- p=quarantine
- Homepage HTML
- 181 KB, gzip
- Images on homepage
- 58 (png 56, svg 3, gif 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 7
Observed 22
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- security.txt published
- 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
- Static files cached for 30 days or more
- 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
- Nameservers spread across providers
Not measured 2
- HTTP requests move to HTTPS
- robots.txt published
Own auchan.fr?
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: auchan.fr. This profile covers configuration only.