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cdeledu.com

正保远程教育-专注职业教育和服务

Last scanned Jul 26, 2026, 5:47 AM

68

Overall score

Fair

Summary

正保远程教育（China Distance Education Holdings Ltd., CDEL）成立于2000年，为北京市高新技术企业、联合国教科文组织技术与职业教育培训在中国的试点项目。经教育部批准，�… This website uses jQuery. SEO is fair (55/100) and accessibility is good (75/100). Security scores fair (65/100) and performance good (80/100). Top issue: Meta description longer than 160 characters.

正保远程教育（China Distance Education Holdings Ltd., CDEL）成立于2000年，为北京市高新技术企业、联合国教科文组织技术与职业教育培训在中国的试点项目。经教育部批准，常年开展面向多行业、多领域的网络教育，并提供远程多媒体网络教育平台系列产品。

Top issues to fix

15 issues found · 5 high priority

  • 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.

  • 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.

  • Slow estimated load (4.6s)

    Performance

    Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.

  • TLS certificate expires in 16 days

    Security

    Renew soon or enable auto-renewal to avoid a browser-warning outage.

+9 more issues — details in the sections below.

55

SEO

7 issue(s) found

80

Performance

4.60 s

65

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.

Organization

Company details published in this site's own structured data.

正保远程教育（China Distance Education Holdings Ltd., CDEL）成立于2000年，为北京市高新技术企业、联合国教科文组织技术与职业教育培训在中国的试点项目。经教育部批准，常年开展面向多行业、多领域的网络教育，并提供远程多媒体网络教育平台系列产品。

Meta tags

Title
正保远程教育-专注职业教育和服务
Description
正保远程教育（China Distance Education Holdings Ltd., CDEL）成立于2000年，为北京市高新技术企业、联合国教科文组织技术与职业教育培训在中国的试点项目。经教育部批准，常年开展面向多行业、多领域的网络教育，并提供远程多媒体网络教育平台系列产品。
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.

jQuery

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
GlobalSign nv-sa
Subject
*.chinaacc.com
Valid from
Jul 11, 2025
Valid to
Aug 12, 2026
Days until expiry
16
SAN domains
*.chinaacc.com, *.edu.chinaacc.com, *.cdeledu.com, *.med66.com, *.jianshe99.com, chinaacc.com

Security headers

  • Strict-Transport-SecurityMissing
  • 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 5 · H3 0

Links

54 internal · 15 external · 0 broken

Images

41 total · 2 missing alt

Scripts / Styles

14 scripts · 2 stylesheets

JS / CSS size

104 KB · 3.6 KB

Page size

40.4 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
  • Missing viewport meta tag

Scan details

Requested URL
https://cdeledu.com
Final URL
https://www.cdeledu.com/
HTTP status
200
HTTP version
HTTP/2
Response time
4.60 s
HTML size
40.4 KB
Redirect chain
https://cdeledu.com → https://www.cdeledu.com/

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Frequently asked questions

What technology does cdeledu.com use?
cdeledu.com is built with jQuery.
Is cdeledu.com secure (HTTPS)?
Yes. cdeledu.com uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Aug 12, 2026.
Who hosts cdeledu.com?
Hosting provider information for cdeledu.com is not available yet.
What is cdeledu.com's SEO score?
cdeledu.com scored 55/100 for SEO in the latest analysis (fair).
What is cdeledu.com's overall website score?
cdeledu.com has an overall SiteGraph score of 68/100, combining SEO, performance, security, and accessibility.