idefix.com

Readiness by lane

Green: idefix.com. Thin bar: E-Commerce & Marketplaces peer median.

Priority fixes for idefix.com

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Accelerate

   Modern image formats in use

   Observed: The homepage had 67 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 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

2. 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.

   70% of E-Commerce & Marketplaces peers do this.

   Guide: A Practical Website Health Check for Owners

3. 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.

   On Next.js: Use the next/script component with an appropriate loading strategy.

   44% of E-Commerce & Marketplaces peers do this.

   Guide: Control Third-Party Scripts Before They Control Your Page

4. Priority 4 · Harden

   Content Security Policy present

   Observed: The homepage response did not include a Content-Security-Policy header.

   What to do: Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.

   On Next.js: Next.js documents nonce-based CSP with middleware.

   48% of E-Commerce & Marketplaces peers do this.

   Guide: Payment Security and PCI DSS: What Website Owners Need to Know

What idefix.com already does well

Practices fewer than half of E-Commerce & Marketplaces peers use.

• HSTS kept for at least a yearHSTS with a 730-day max-age covering subdomains.32% of peers
• DMARC policy enforces quarantine or rejectDMARC policy p=reject.39% of peers
• HTTP/3 advertisedHTTP/3 advertised.47% of peers

What we saw

Homepage checked

https://www.idefix.com/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Sectigo, 198-day validity, expiring 2027-04-29

CDN or edge

Amazon CloudFront

Platform or framework

Next.js

DNS operators

Amazon Route 53

HSTS

max-age 730 days, includeSubDomains, preload

DMARC policy

p=reject

Homepage HTML

588 KB, gzip

Images on homepage

67 (png 11, svg 10, jpg 9)

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

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E-Commerce & Marketplaces readiness benchmark