iupac.org
International Union of Pure and Applied Chemistry
Last scanned Aug 3, 2026, 6:00 AM · 5 views
Overall score
Great
Summary
IUPAC serves the international scientific endeavor in the dual function of a basic science and a mission-oriented Union. This website uses WordPress behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: No H1 heading found.
IUPAC serves the international scientific endeavor in the dual function of a basic science and a mission-oriented Union. The Union is in a unique position
Top issues to fix
8 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd 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
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
+2 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
147 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Score history
+3 overall since Jul 26, 2026
- Overall
- 83
- SEO
- 80
- Security
- 65
- Performance
- 100
- Accessibility
- 90
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- International Union of Pure and Applied Chemistry
- Description
- IUPAC serves the international scientific endeavor in the dual function of a basic science and a mission-oriented Union. The Union is in a unique position
- Canonical
- https://iupac.org/
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- 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
- iupac.org
- Valid from
- Aug 2, 2026
- Valid to
- Oct 31, 2026
- Days until expiry
- 89
- SAN domains
- iupac.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 11 · H3 3
Links
60 internal · 12 external · 20 broken
Images
19 total · 3 missing alt
Scripts / Styles
42 scripts · 10 stylesheets
JS / CSS size
7.2 KB · 13.3 KB
Page size
82.8 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No H1 heading found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://iupac.org
- Final URL
- https://iupac.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 146 ms
- HTML size
- 82.8 KB
- Redirect chain
- https://iupac.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does iupac.org use?
- iupac.org is built with WordPress, jQuery.
- Is iupac.org secure (HTTPS)?
- Yes. iupac.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 31, 2026.
- Who hosts iupac.org?
- Hosting provider information for iupac.org is not available yet.
- What is iupac.org's SEO score?
- iupac.org scored 80/100 for SEO in the latest analysis (great).
- What is iupac.org's overall website score?
- iupac.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
- Has iupac.org's score changed over time?
- iupac.org's overall score has improved by 3 points (from 80 to 83) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card