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sd.edu.cn

山东教育和科研计算机网

Last scanned Jul 27, 2026, 11:43 AM · 1 view

61

Overall score

Fair

Summary

This website uses jQuery hosted on ERX-CERNET-BKB - China Education and Research Network Center, CN. SEO is fair (50/100) and accessibility is fair (60/100). Security scores poor (35/100) 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

13 issues found · 6 high priority

  • TLS certificate expires in -119 days

    Security

    Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • 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.

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

+7 more issues — details in the sections below.

50

SEO

7 issue(s) found

100

Performance

461 ms

35

Security

HTTPS & header checks

60

Accessibility

2 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
山东教育和科研计算机网
Description
Canonical
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=0.1
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.

jQuery

Hosting & CDN

CDN provider
—
IP address
202.194.15.5
ASN
AS4538 (ERX-CERNET-BKB - China Education and Research Network Center, CN)

DNS records

TypeValue
A
  • 202.194.15.5
AAAA
  • 2001:da8:7000:15:202:194:15:5
MX
  • mail.ksomail.com
TXT
  • v=spf1 include:spf-a.ksomail.com include:spf-b.ksomail.com -all
  • code_kingsoft=unDXFks69FXd-sOwiy4d2
NS
  • dns1.sd.edu.cn
  • dns2.sd.edu.cn
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
sd.edu.cn
Valid from
Dec 30, 2025
Valid to
Mar 30, 2026
Days until expiry
-119
SAN domains
sd.edu.cn

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 2 · H3 0

Links

38 internal · 16 external · 20 broken

Images

11 total · 11 missing alt

Scripts / Styles

20 scripts · 5 stylesheets

JS / CSS size

2.3 KB · 623 B

Page size

19.7 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

  • Over half of images are missing alt text
  • No H1 heading found

Scan details

Requested URL
https://sd.edu.cn
Final URL
https://sd.edu.cn
HTTP status
200
HTTP version
HTTP/1.1
Response time
461 ms
HTML size
19.7 KB
Redirect chain
https://sd.edu.cn

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sd.edu.cn use?
sd.edu.cn is built with jQuery.
Is sd.edu.cn secure (HTTPS)?
Yes. sd.edu.cn uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Mar 30, 2026.
Who hosts sd.edu.cn?
sd.edu.cn is hosted on ERX-CERNET-BKB - China Education and Research Network Center, CN.
What is sd.edu.cn's SEO score?
sd.edu.cn scored 50/100 for SEO in the latest analysis (fair).
What is sd.edu.cn's overall website score?
sd.edu.cn has an overall SiteGraph score of 61/100, combining SEO, performance, security, and accessibility.