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SGSiteGraph

sdau.edu.cn

山东农业大学邮件系统

Last scanned Jul 27, 2026, 3:43 PM

74

Overall score

Fair

Summary

This website is hosted on ERX-CERNET-BKB - China Education and Research Network Center, CN. SEO is fair (50/100) and accessibility is good (75/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.

China
Hosted on ERX-CERNET-BKB - China Education and Research Network Center, CN

Top issues to fix

12 issues found · 4 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+6 more issues — details in the sections below.

50

SEO

7 issue(s) found

100

Performance

189 ms

75

Security

HTTPS & header checks

75

Accessibility

3 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
山东农业大学邮件系统
Description
Canonical
Language
Charset
UTF-8
Viewport
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

CDN provider
—
IP address
202.194.133.2
ASN
AS4538 (ERX-CERNET-BKB - China Education and Research Network Center, CN)

DNS records

TypeValue
A
  • 202.194.133.2
AAAA—
MX
  • sdau2.sdau.edu.cn
TXT
  • v=spf1 ip4:202.194.133.2 ip4:202.194.133.44 ip6:2001:da8:7004:133::2 include:spf.icoremail.net -all
NS
  • sdau1.sdau.edu.cn
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
DigiCert, Inc.
Subject
*.sdau.edu.cn
Valid from
Jun 22, 2026
Valid to
Jan 6, 2027
Days until expiry
163
SAN domains
*.sdau.edu.cn, sdau.edu.cn

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 1 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

7 scripts · 4 stylesheets

JS / CSS size

913 KB · 41.5 KB

Page size

17.8 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 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
  • Missing viewport meta tag

Scan details

Requested URL
https://sdau.edu.cn
Final URL
https://sdau.edu.cn
HTTP status
200
HTTP version
HTTP/1.1
Response time
189 ms
HTML size
17.8 KB
Redirect chain
https://sdau.edu.cn

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sdau.edu.cn use?
We did not detect any specific technologies for sdau.edu.cn in the latest scan.
Is sdau.edu.cn secure (HTTPS)?
Yes. sdau.edu.cn uses TLS 1.3 with a certificate issued by DigiCert, Inc., valid until Jan 6, 2027.
Who hosts sdau.edu.cn?
sdau.edu.cn is hosted on ERX-CERNET-BKB - China Education and Research Network Center, CN.
What is sdau.edu.cn's SEO score?
sdau.edu.cn scored 50/100 for SEO in the latest analysis (fair).
What is sdau.edu.cn's overall website score?
sdau.edu.cn has an overall SiteGraph score of 74/100, combining SEO, performance, security, and accessibility.