Category benchmark · Snapshot 23 October 2026

Postage & Courier Services: website readiness

31 configuration checks across 185 Postage & Courier Services sites from the SID website catalog, with 122 individual profiles for sites in the Chrome UX Report top 50K.

Sites measured: 185
Median readiness index: 60/100
Profiles: 122
Weakest lane: Recover

Readiness by lane

Enable

75/100

All sites 77

Harden

56/100

All sites 56

Accelerate

53/100

All sites 64

Recover

12/100

All sites 10

Biggest gaps for Postage & Courier Services sites

The checks with the most room to improve, weighted by impact.

HSTS kept for at least a year
39% observed · all sites 34%
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.
Guide: HTTPS and TLS Guide for Website Owners
Modern image formats in use
31% observed · all sites 40%
Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
security.txt published
3.9% observed · all sites 7.1%
Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.
Guide: A Practical Website Health Check for Owners
CAA records limit who can issue certificates
16% observed · all sites 13%
Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.
Guide: HTTPS and TLS Guide for Website Owners
Static files cached for 30 days or more
44% observed · all sites 51%
Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
Guide: Browser Caching Guide for Website Owners
HTTP/3 advertised
22% observed · all sites 37%
Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
Guide: CDN Guide for Website Owners

Where Postage & Courier Services sites lead

DMARC policy enforces quarantine or reject52% observedall sites 39%
Referrer-Policy set28% observedall sites 24%
HSTS kept for at least a year39% observedall sites 34%
robots.txt published81% observedall sites 76%

Stack mix

CDN and edge

Cloudflare22%
Amazon CloudFront12%
Akamai5.4%
Google edge2.7%
Azure Front Door/CDN2.2%
Vercel1.6%
Alibaba Cloud CDN1.1%
Bunny CDN<1%

Platform or framework

WordPress13%
Next.js12%
Nuxt6.5%
PrestaShop2.7%
Drupal1.6%
HubSpot CMS1.6%
Adobe Experience Manager1.1%
Angular<1%

DNS operator

Certificate authority

Readiness leaders

Postage & Courier Services sites in the top 50K with the highest share of observed practices (at least 26 of 31 checks measured). This lists only what we observed on 23 October 2026; owners can request a correction.

All 31 checks for Postage & Courier Services

Check	Lane	Observed	All sites	Measured
HTTP requests move to HTTPS	Harden	90%	91%	168
HSTS kept for at least a year	Harden	39%	34%	181
TLS 1.3 negotiated	Harden	86%	91%	182
Certificate has more than 14 days left	Harden	98%	99%	182
Certificate lifetime of 100 days or less	Harden	39%	67%	182
CAA records limit who can issue certificates	Harden	16%	13%	185
DNSSEC signed	Harden	11%	8%	185
security.txt published	Harden	3.9%	7.1%	178
DMARC policy enforces quarantine or reject	Harden	52%	39%	184
X-Content-Type-Options: nosniff	Harden	45%	48%	181
Framing restricted	Harden	50%	51%	181
Content Security Policy present	Harden	31%	32%	181
Referrer-Policy set	Harden	28%	24%	181
HTTP/2 negotiated	Accelerate	74%	90%	182
HTTP/3 advertised	Accelerate	22%	37%	181
HTML compressed	Accelerate	85%	93%	180
Static files cached for 30 days or more	Accelerate	44%	51%	162
Modern image formats in use	Accelerate	31%	40%	152
Offscreen images lazy-loaded	Accelerate	44%	62%	143
No render-blocking scripts in <head>	Accelerate	39%	48%	181
robots.txt published	Enable	81%	76%	180
XML sitemap discoverable	Enable	69%	70%	179
Reachable over IPv6	Enable	31%	48%	185
Canonical URL declared	Enable	61%	68%	181
Meta description written	Enable	86%	84%	181
Mobile viewport configured	Enable	97%	94%	181
Structured data present	Enable	42%	51%	181
Social preview image set	Enable	50%	57%	181
Page language declared	Enable	90%	90%	181
At most one redirect to the homepage	Enable	96%	98%	181
Nameservers spread across providers	Recover	12%	10%	183

Postage & Courier Services profiles

Readiness index shown next to each site.

Postage & Courier Services: website readiness

Readiness by lane

Biggest gaps for Postage & Courier Services sites

HSTS kept for at least a year

Modern image formats in use

security.txt published

CAA records limit who can issue certificates

Static files cached for 30 days or more

HTTP/3 advertised