Website readiness profile · Snapshot 23 October 2026
cbp.gov
cbp.gov's public homepage, certificate and DNS checked against 31 practices and compared with 954 Government Services sites.
- Readiness index
- 75/100
- Ahead of
- 90%
- Practices observed
- 21/31
- Popularity band
- Top 50K
Government Services median 53
of measured Government Services sites
0 of 31 could not be measured
Chrome UX Report top-sites list
Readiness by lane
Green: cbp.gov. Thin bar: Government Services peer median.
Enable
85/100
Peers 59
Harden
80/100
Peers 59
Accelerate
63/100
Peers 41
Recover
0/100
Peers 25
Priority fixes for cbp.gov
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 18 hours, 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.
30% of Government Services peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Priority 2 · Accelerate
No render-blocking scripts in <head>
Observed: The homepage <head> loaded 4 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.
39% of Government Services peers do this.
Guide: Control Third-Party Scripts Before They Control Your Page
Priority 3 · Harden
CAA records limit who can issue certificates
Observed: No CAA record was found for cbp.gov, so any public certificate authority may issue for it.
What to do: 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.
17% of Government Services peers do this.
Priority 4 · Enable
Social preview image set
Observed: The homepage had no og:image, so shared links may show without a preview image.
What to do: Add Open Graph tags, including og:image with a 1200 x 630 image.
36% of Government Services peers do this.
What cbp.gov already does well
Practices fewer than half of Government Services peers use.
- Modern image formats in useWebP or AVIF images detected.15% of peers
- DNSSEC signedDNSSEC delegation (DS record) present.19% of peers
- Reachable over IPv6IPv6 address published.27% of peers
What we saw
- Homepage checked
- https://www.cbp.gov/
- Homepage response
- HTTP 200
- TLS
- TLSv1.3, HTTP/2
- Certificate
- DigiCert, 198-day validity, expiring 2027-04-23
- Platform or framework
- Drupal
- DNS operators
- Akamai Edge DNS
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=reject
- Homepage HTML
- 95 KB, gzip
- Images on homepage
- 26 (svg 12, webp 10, png 4)
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
- DNSSEC signed
- DMARC policy enforces quarantine or reject
- X-Content-Type-Options: nosniff
- Framing restricted
- Content Security Policy present
- HTTP/2 negotiated
- HTML compressed
- Modern image formats in use
- Offscreen images lazy-loaded
- robots.txt published
- XML sitemap discoverable
- Reachable over IPv6
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Page language declared
- At most one redirect to the homepage
Own cbp.gov?
Re-run the checks after a change, or verify the site in a free workspace to save reports with history, compare against similar sites and competitors, and track a private action plan. What owners get.
Live status for this site: Status Is Down: cbp.gov. This profile covers configuration only.