cht.com.tw

Readiness by lane

Green: cht.com.tw. Thin bar: Telecommunications & Internet peer median.

Priority fixes for cht.com.tw

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

1. Priority 1 · Accelerate

   HTTP/2 negotiated

   Observed: The TLS handshake selected http/1.1 instead of HTTP/2.

   Why it matters: HTTP/2 sends many files over one connection, which speeds up pages with lots of images, styles and scripts.

   What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.

   72% of Telecommunications & Internet peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: CDN Guide for Website Owners

2. Priority 2 · Accelerate

   Modern image formats in use

   Observed: The homepage had 69 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.

   52% of Telecommunications & Internet peers do this.

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

3. Priority 3 · Accelerate

   Offscreen images lazy-loaded

   Observed: The homepage had 69 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.

   66% of Telecommunications & Internet peers do this.

   Guide: Lazy Loading Without Broken Pages

4. Priority 4 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 6 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.

   37% of Telecommunications & Internet peers do this.

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

What cht.com.tw already does well

Practices fewer than half of Telecommunications & Internet peers use.

• Reachable over IPv6IPv6 address published.33% of peers
• Content Security Policy presentContent-Security-Policy present.48% of peers

What we saw

Homepage checked

https://www.cht.com.tw/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, http/1.1

Certificate

Chunghwa Telecom Co., Ltd., 199-day validity, expiring 2027-01-15

Platform or framework

Sitecore

DNS operators

1 self-run or other nameserver domain

HSTS

max-age 365 days, includeSubDomains

DMARC policy

p=reject

Homepage HTML

298 KB, br

Images on homepage

69 (svg 43, png 29, jpg 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

Compare with other Telecommunications & Internet sites

• att.com69
• boostmobile.com69
• dialog.lk69
• orange.es69
• vodafone.pt70

Telecommunications & Internet readiness benchmark