tcl.com

Readiness by lane

Green: tcl.com. Thin bar: Smart Home & Lifestyle peer median.

Priority fixes for tcl.com

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

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Amazon CloudFront: Attach a response headers policy with Strict-Transport-Security to each distribution.

   43% of Smart Home & Lifestyle peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   Modern image formats in use

   Observed: The homepage had 331 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.

   46% of Smart Home & Lifestyle 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 331 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.

   65% of Smart Home & Lifestyle peers do this.

   Guide: Lazy Loading Without Broken Pages

4. Priority 4 · Accelerate

   No render-blocking scripts in <head>

   Observed: The homepage <head> loaded 3 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 Smart Home & Lifestyle peers do this.

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

What tcl.com already does well

Practices fewer than half of Smart Home & Lifestyle peers use.

• Content Security Policy presentContent-Security-Policy present.36% of peers
• HTTP/3 advertisedHTTP/3 advertised.42% of peers

What we saw

Homepage checked

https://www.tcl.com/

Homepage response

HTTP 200, after 1 redirect

TLS

TLSv1.3, HTTP/2

Certificate

DigiCert, 396-day validity, expiring 2027-03-12

CDN or edge

Amazon CloudFront

Platform or framework

Adobe Experience Manager

DNS operators

1 self-run or other nameserver domain

DMARC policy

p=quarantine

Homepage HTML

847 KB, br

Images on homepage

331 (jpg 291, png 28, svg 14)

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 Smart Home & Lifestyle sites

• families.google71
• havells.com70
• hunker.com71
• kinder.com68
• rhs.org.uk74

Smart Home & Lifestyle readiness benchmark