plos.org
Just a moment...
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Fair
Top issues to fix
10 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.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
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.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
+4 more issues — details in the sections below.
Summary
This website is hosted on Cloudflare. SEO is fair (60/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.
SEO
6 issue(s) found
Performance
27 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Meta tags
- Title
- Just a moment...
- Description
- Canonical
- Language
- en-US
- Charset
- UTF-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- noindex,nofollow
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.26.9.182
- 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
- plos.org
- Valid from
- Jul 8, 2026
- Valid to
- Oct 6, 2026
- Days until expiry
- 79
- SAN domains
- plos.org, *.plos.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 1 · H2 2 · H3 0
Links
0 internal · 2 external · 0 broken
Images
1 total · 0 missing alt
Scripts / Styles
3 scripts · 0 stylesheets
JS / CSS size
294 KB · 20.4 KB
Page size
1.3 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://plos.org
- Final URL
- https://plos.org
- HTTP status
- 403
- HTTP version
- HTTP/2
- Response time
- 27 ms
- HTML size
- 1.3 KB
- Redirect chain
- https://plos.org
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Frequently asked questions
- What technology does plos.org use?
- We did not detect any specific technologies for plos.org in the latest scan.
- Is plos.org secure (HTTPS)?
- Yes. plos.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 6, 2026.
- Who hosts plos.org?
- plos.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is plos.org's SEO score?
- plos.org scored 60/100 for SEO in the latest analysis (fair).
- What is plos.org's overall website score?
- plos.org has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card