Website readiness profile · Snapshot 23 October 2026
correios.com.br
correios.com.br's public homepage, certificate and DNS checked against 31 practices and compared with 185 Postage & Courier Services sites.
- Readiness index
- 53/100
- Ahead of
- 26%
- Practices observed
- 15/31
- Popularity band
- Top 50K
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: correios.com.br. Thin bar: Postage & Courier Services peer median.
Enable
87/100
Peers 75
Harden
55/100
Peers 56
Accelerate
20/100
Peers 53
Recover
0/100
Peers 12
Priority fixes for correios.com.br
Ordered by impact and by how common each practice is among peers.
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.
74% of Postage & Courier Services peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Priority 2 · Harden
TLS 1.3 negotiated
Observed: The TLS connection negotiated TLSv1.2.
What to do: Enable TLS 1.3 on your CDN or server. Keep TLS 1.2 available for older clients unless you have checked your audience.
86% of Postage & Courier Services peers do this.
Priority 3 · Harden
DMARC policy enforces quarantine or reject
Observed: The DMARC policy for correios.com.br was p=none, which asks receivers to take no action on failing mail.
What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
52% of Postage & Courier Services peers do this.
Priority 4 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 1 hours, short of the 30-day benchmark.
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.
What correios.com.br already does well
Practices fewer than half of Postage & Courier Services peers use.
- DNSSEC signedDNSSEC delegation (DS record) present.11% of peers
- HSTS kept for at least a yearHSTS with a 365-day max-age covering subdomains.39% of peers
- X-Content-Type-Options: nosniffnosniff header present.45% of peers
What we saw
- Homepage checked
- https://www.correios.com.br/
- Homepage response
- HTTP 200
- TLS
- TLSv1.2
- Certificate
- DigiCert, 198-day validity, expiring 2027-04-02
- DNS operators
- 1 self-run or other nameserver domain
- HSTS
- max-age 365 days, includeSubDomains
- DMARC policy
- p=none
- Homepage HTML
- 147 KB, gzip
- Images on homepage
- 117 (svg 13, png 10)
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 16
- TLS 1.3 negotiated
- Certificate lifetime of 100 days or less
- CAA records limit who can issue certificates
- security.txt published
- DMARC policy enforces quarantine or reject
- Content Security Policy present
- Referrer-Policy set
- HTTP/2 negotiated
- HTTP/3 advertised
- Static files cached for 30 days or more
- Modern image formats in use
- Offscreen images lazy-loaded
- No render-blocking scripts in <head>
- Reachable over IPv6
- Structured data present
- Nameservers spread across providers
Observed 15
- HTTP requests move to HTTPS
- HSTS kept for at least a year
- Certificate has more than 14 days left
- DNSSEC signed
- X-Content-Type-Options: nosniff
- Framing restricted
- HTML compressed
- robots.txt published
- XML sitemap discoverable
- Canonical URL declared
- Meta description written
- Mobile viewport configured
- Social preview image set
- Page language declared
- At most one redirect to the homepage
Own correios.com.br?
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: correios.com.br. This profile covers configuration only.