What technology does concrete.org use?

concrete.org is built with jQuery, Google Analytics.

Is concrete.org secure (HTTPS)?

Yes. concrete.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 23, 2026.

Who hosts concrete.org?

Hosting provider information for concrete.org is not available yet.

What is concrete.org's SEO score?

concrete.org scored 60/100 for SEO in the latest analysis (fair).

What is concrete.org's overall website score?

concrete.org has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.

concrete.org

American Concrete Institute

Last scanned Jul 26, 2026, 12:19 PM

Overall score

Fair

Summary

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, an… This website uses Google Analytics. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.

Top issues to fix

11 issues found · 3 high priority

Missing Strict-Transport-Security header
Security
Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
6 cookies without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.

+5 more issues — details in the sections below.

SEO

6 issue(s) found

Performance

1.77 s

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.

Facebook Instagram X (Twitter)LinkedIn YouTube

Meta tags

Title: American Concrete Institute
Description: The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
Canonical: https://www.concrete.org
Language: en-US
Charset: UTF-8
Viewport: width=device-width, initial-scale=1, maximum-scale=1
Robots meta: INDEX, FOLLOW
Manifest

Technologies

Detected frameworks, languages, and tools.

jQuery Google Analytics

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Let's Encrypt
Subject: www.concrete.org
Valid from: Jul 25, 2026
Valid to: Oct 23, 2026
Days until expiry: 86
SAN domains: acifoundation.org, committees.neuconcrete.org, committees.nonmetallic.org, concrete.org, concreteresearchcouncil.org, plus.concrete.org, post-tensioning.org, scholarshipcouncil.org, www.acifoundation.org, www.concrete.org, www.concreteproductivity.org, www.concreteresearchcouncil.org, www.post-tensioning.org, www.scholarshipcouncil.org

Security headers

Strict-Transport-SecurityMissing
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 6 cookie(s) observed

Content & assets

Headings

H1 0 · H2 1 · H3 13

Links

101 internal · 57 external · 20 broken

Images

71 total · 6 missing alt

Scripts / Styles

34 scripts · 6 stylesheets

JS / CSS size

6.3 KB · 1.1 KB

Page size

253 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://concrete.org
Final URL: https://www.concrete.org/
HTTP status: 200
HTTP version: HTTP/2
Response time: 1.77 s
HTML size: 253 KB
Redirect chain: https://concrete.org → https://www.concrete.org/

See something wrong on this report? Request a correction

Frequently asked questions

What technology does concrete.org use?: concrete.org is built with jQuery, Google Analytics.
Is concrete.org secure (HTTPS)?: Yes. concrete.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 23, 2026.
Who hosts concrete.org?: Hosting provider information for concrete.org is not available yet.
What is concrete.org's SEO score?: concrete.org scored 60/100 for SEO in the latest analysis (fair).
What is concrete.org's overall website score?: concrete.org has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.