Website readiness profile · Snapshot 23 October 2026

supersim.com.br

supersim.com.br's public homepage, certificate and DNS checked against 31 practices and compared with 549 Banking & Finance sites.

Readiness index: 77/100
Ahead of: 83%
Practices observed: 21/31
Popularity band: Top 10K

Measured 2026-10-23 11:40:38 UTC from one location. How we measure

Readiness by lane

Green: supersim.com.br. Thin bar: Banking & Finance peer median.

Enable

95/100

Peers 78

Harden

69/100

Peers 64

Accelerate

75/100

Peers 55

Recover

0/100

Peers 21

Priority fixes for supersim.com.br

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.
43% of Banking & Finance peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.
Guide: Browser Caching Guide for Website Owners
Priority 2 · Harden
Content Security Policy present
Observed: The homepage response did not include a Content-Security-Policy header.
What to do: Start with Content-Security-Policy-Report-Only to see what would break, tighten the policy over a few weeks, then enforce it.
51% of Banking & Finance peers do this.
Guide: Payment Security and PCI DSS: What Website Owners Need to Know
Priority 3 · Harden
X-Content-Type-Options: nosniff
Observed: The homepage response did not include X-Content-Type-Options: nosniff.
What to do: Send X-Content-Type-Options: nosniff on all responses and make sure each file is served with the correct Content-Type.
On Amazon CloudFront: Enable it in a response headers policy (security headers section).
65% of Banking & Finance peers do this.
Guide: A Practical Website Health Check for Owners
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.
On Amazon CloudFront: Select HTTP/3 in the distribution's supported HTTP versions.
22% of Banking & Finance peers do this.
Guide: CDN Guide for Website Owners

What supersim.com.br already does well

Practices fewer than half of Banking & Finance peers use.

Certificate lifetime of 100 days or lessShort-lived 89-day certificate from Let's Encrypt, already inside the 2027 limit.31% of peers
No render-blocking scripts in <head>Head scripts load without blocking.36% of peers
Modern image formats in useWebP or AVIF images detected.37% of peers

What we saw

Homepage checked: https://www.supersim.com.br/
Homepage response: HTTP 200
TLS: TLSv1.3, HTTP/2
Certificate: Let's Encrypt, 89-day validity, expiring 2026-11-20
CDN or edge: Amazon CloudFront
DNS operators: Amazon Route 53
HSTS: max-age 365 days, includeSubDomains
DMARC policy: p=quarantine
Homepage HTML: 236 KB, gzip
Images on homepage: 58 (png 46, webp 19, jpg 16)

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.

Amazon CloudFront (cdn and edge platform)Amazon Route 53 (dns operator)Let's Encrypt (certificate authority)Service guide: AWS (Amazon Web Services)

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
Certificate lifetime of 100 days or less
DMARC policy enforces quarantine or reject
Framing restricted
HTTP/2 negotiated
HTML compressed
Modern image formats in use
Offscreen images lazy-loaded
No render-blocking scripts in <head>
robots.txt published
XML sitemap discoverable
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

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Live status for this site: Status Is Down: supersim.com.br. This profile covers configuration only.

Compare with other Banking & Finance sites

Banking & Finance readiness benchmark