dowann.net
上海道安投资咨询有限公司
Last scanned Aug 4, 2026, 11:00 PM · 8 views
Overall score
Fair
Summary
道安咨询（上海）有限公司是一家致力于安全、职业健康与环保（EHS）的专业咨询和信息化服务机构，旨在协助客户降低EHS风险，提高EHS工作效率、提升EHS业绩。. This website uses Nginx. SEO is fair (55/100) and accessibility is good (80/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
道安咨询（上海）有限公司是一家致力于安全、职业健康与环保（EHS）的专业咨询和信息化服务机构，旨在协助客户降低EHS风险，提高EHS工作效率、提升EHS业绩。
Top issues to fix
13 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.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
+7 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
519 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
+1 overall since Jul 27, 2026
- Overall
- 74
- SEO
- 55
- Security
- 65
- Performance
- 100
- Accessibility
- 80
Organization
Company details published in this site's own structured data.
道安咨询（上海）有限公司是一家致力于安全、职业健康与环保（EHS）的专业咨询和信息化服务机构，旨在协助客户降低EHS风险，提高EHS工作效率、提升EHS业绩。
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- 上海道安投资咨询有限公司
- Description
- 道安咨询（上海）有限公司是一家致力于安全、职业健康与环保（EHS）的专业咨询和信息化服务机构，旨在协助客户降低EHS风险，提高EHS工作效率、提升EHS业绩。
- Canonical
- Language
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
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
- TrustAsia Technologies, Inc.
- Subject
- dowann.net
- Valid from
- Jun 14, 2026
- Valid to
- Sep 12, 2026
- Days until expiry
- 38
- SAN domains
- dowann.net, www.dowann.net
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
20 internal · 1 external · 20 broken
Images
61 total · 0 missing alt
Scripts / Styles
72 scripts · 7 stylesheets
JS / CSS size
7.7 KB · 0 B
Page size
102 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
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
- No H1 heading found
- Missing <html lang> attribute
Scan details
- Requested URL
- https://dowann.net
- Final URL
- https://dowann.net
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 517 ms
- HTML size
- 102 KB
- Redirect chain
- https://dowann.net
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Frequently asked questions
- What technology does dowann.net use?
- dowann.net is built with jQuery, Nginx.
- Is dowann.net secure (HTTPS)?
- Yes. dowann.net uses TLS 1.3 with a certificate issued by TrustAsia Technologies, Inc., valid until Sep 12, 2026.
- Who hosts dowann.net?
- Hosting provider information for dowann.net is not available yet.
- What is dowann.net's SEO score?
- dowann.net scored 55/100 for SEO in the latest analysis (fair).
- What is dowann.net's overall website score?
- dowann.net has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.
- Has dowann.net's score changed over time?
- dowann.net's overall score has improved by 1 point (from 73 to 74) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card