biologyonline.com
Learn Biology Online - Biology Articles, Tutorials & Dictionary Online
Last scanned Aug 4, 2026, 7:00 PM · 10 views
Overall score
Great
Summary
Biology Online is the world’s most comprehensive database of Biology terms and topics. This website uses WordPress behind Cloudflare CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance good (75/100). Top issue: Title longer than 60 characters.
Biology Online is the world’s most comprehensive database of Biology terms and topics. Since 2001 it has been the resource of choice for professors, students, and professionals needing answers to Biology questions.
Top issues to fix
6 issues found · 2 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.
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.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
SEO
2 issue(s) found
Performance
1.32 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-4 overall since Jul 27, 2026
- Overall
- 82
- SEO
- 90
- Security
- 65
- Performance
- 75
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Biology Online is the world’s most comprehensive database of Biology terms and topics. Since 2001 it has been the resource of choice for professors, students, and professionals needing answers to Biology questions.
Meta tags
- Title
- Learn Biology Online - Biology Articles, Tutorials & Dictionary Online
- Description
- Biology Online is the world’s most comprehensive database of Biology terms and topics. Since 2001 it has been the resource of choice for professors, students, and professionals needing answers to Biology questions.
- Canonical
- https://www.biologyonline.com/
- Language
- en-US
- Charset
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- 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
- 141.193.213.20
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- biologyonline.com
- Valid from
- Jul 20, 2026
- Valid to
- Oct 18, 2026
- Days until expiry
- 74
- SAN domains
- biologyonline.com, *.biologyonline.com
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 1 · H2 3 · H3 26
Links
549 internal · 4 external · 0 broken
Images
9 total · 0 missing alt
Scripts / Styles
42 scripts · 5 stylesheets
JS / CSS size
1.4 MB · 15.3 KB
Page size
236 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 3
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- Meta description longer than 160 characters
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://biologyonline.com
- Final URL
- https://www.biologyonline.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.32 s
- HTML size
- 236 KB
- Redirect chain
- https://biologyonline.com → http://www.biologyonline.com/ → https://www.biologyonline.com/
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Frequently asked questions
- What technology does biologyonline.com use?
- biologyonline.com is built with WordPress, jQuery, Google Analytics.
- Is biologyonline.com secure (HTTPS)?
- Yes. biologyonline.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 18, 2026.
- Who hosts biologyonline.com?
- Hosting provider information for biologyonline.com is not available yet.
- What is biologyonline.com's SEO score?
- biologyonline.com scored 90/100 for SEO in the latest analysis (excellent).
- What is biologyonline.com's overall website score?
- biologyonline.com has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
- Has biologyonline.com's score changed over time?
- biologyonline.com's overall score has declined by 4 points (from 86 to 82) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card