cellphones.com.vn

Readiness by lane

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

Priority fixes for cellphones.com.vn

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

1. 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

2. Priority 2 · Accelerate

   Modern image formats in use

   Observed: The homepage had 166 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.

   On Next.js: The next/image component serves optimized formats automatically.

   47% of E-Commerce & Marketplaces peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

3. Priority 3 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for cellphones.com.vn was p=none, which asks receivers to take no action on failing mail.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   39% of E-Commerce & Marketplaces peers do this.

   Guide: A Practical Website Health Check for Owners

4. Priority 4 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 1 external script 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

What cellphones.com.vn 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
• Content Security Policy presentContent-Security-Policy present.48% of peers

What we saw

Homepage checked

https://cellphones.com.vn/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

Sectigo, 365-day validity, expiring 2027-02-11

Platform or framework

Next.js

DNS operators

Cloudflare

HSTS

max-age 365 days

DMARC policy

p=none

Homepage HTML

1,225 KB, gzip

Images on homepage

166 (png 148, svg 12, jpg 4, gif 2)

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