webqc.org
Chemical Portal - Chemistry Online Education
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Great
Summary
Chemical portal: a place for chemistry enthusiasts and professionals alike. This website uses Google Ads hosted on Cloudflare behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores excellent (95/100) and performance excellent (100/100). Top issue: Missing canonical link.
Chemical portal: a place for chemistry enthusiasts and professionals alike. Chemistry tools, periodic table, unit converters and more.
- United States
- Hosted on Cloudflare
Top issues to fix
6 issues found · 1 high priority
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 canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
4 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
4 issue(s) found
Performance
626 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Chemical portal: a place for chemistry enthusiasts and professionals alike. Chemistry tools, periodic table, unit converters and more.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Chemical Portal - Chemistry Online Education
- Description
- Chemical portal: a place for chemistry enthusiasts and professionals alike. Chemistry tools, periodic table, unit converters and more.
- Canonical
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://www.webqc.org/manifest.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.67.137.100
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- webqc.org
- Valid from
- Jul 5, 2026
- Valid to
- Oct 3, 2026
- Days until expiry
- 69
- SAN domains
- webqc.org, *.webqc.org
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
15 internal · 12 external · 4 broken
Images
5 total · 0 missing alt
Scripts / Styles
6 scripts · 1 stylesheets
JS / CSS size
3.2 KB · 41 B
Page size
12.9 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 3
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://webqc.org
- Final URL
- https://www.webqc.org/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 626 ms
- HTML size
- 12.9 KB
- Redirect chain
- https://webqc.org → https://www.webqc.org/
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Frequently asked questions
- What technology does webqc.org use?
- webqc.org is built with Google Ads.
- Is webqc.org secure (HTTPS)?
- Yes. webqc.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 3, 2026.
- Who hosts webqc.org?
- webqc.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is webqc.org's SEO score?
- webqc.org scored 70/100 for SEO in the latest analysis (fair).
- What is webqc.org's overall website score?
- webqc.org has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card