Website readiness profile · Snapshot 23 October 2026
usps.com
usps.com's public homepage, certificate and DNS checked against 31 practices and compared with 185 Postage & Courier Services sites.
- Readiness index
- 74/100
- Ahead of
- 84%
- Practices observed
- 21/31
- Popularity band
- Top 10K
Postage & Courier Services median 60
of measured Postage & Courier Services sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: usps.com. Thin bar: Postage & Courier Services peer median.
Enable
100/100
Peers 75
Harden
75/100
Peers 56
Accelerate
50/100
Peers 53
Recover
0/100
Peers 12
Priority fixes for usps.com
Ordered by impact and by how common each practice is among peers.
Priority 1 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for no max-age, short of the 30-day benchmark.
Why it matters: Returning visitors and later page views reuse cached files instead of downloading them again.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
44% of Postage & Courier Services peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Accelerate
Modern image formats in use
Observed: The homepage had 51 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.
31% of Postage & Courier Services peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
Priority 3 · Accelerate
Offscreen images lazy-loaded
Observed: The homepage had 51 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.
44% of Postage & Courier Services peers do this.
Priority 4 · Accelerate
HTTP/3 advertised
Observed: The homepage did not advertise HTTP/3 through an Alt-Svc header.
What to do: Turn on HTTP/3 at your CDN. Browsers fall back to HTTP/2 automatically, so the risk is low.
22% of Postage & Courier Services peers do this.
What usps.com already does well
Practices fewer than half of Postage & Courier Services peers use.
- Reachable over IPv6IPv6 address published.31% of peers
- Content Security Policy presentContent-Security-Policy present.31% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.39% of peers
What we saw
- Homepage checked
- https://www.usps.com/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- DigiCert, 198-day validity, expiring 2027-03-18
- CDN or edge
- Akamai
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=reject
- Homepage HTML
- 87 KB, gzip
- Images on homepage
- 51 (svg 28, png 15, jpg 8)
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
Not observed 10
Observed 21
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- TLS 1.3 negotiated
- Certificate has more than 14 days left
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- No render-blocking scripts in <head>
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Structured data present
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own usps.com?
Re-run the checks after a change, keep a private action plan in a free workspace, or report a mistake.
Live status for this site: Status Is Down: usps.com. This profile covers configuration only.