What technology does csdn.net use?

csdn.net is built with Vue.js, jQuery.

Is csdn.net secure (HTTPS)?

Yes. csdn.net uses TLS 1.3 with a certificate issued by Beijing Xinchacha Credit Management Co., Ltd., valid until Nov 24, 2026.

What is csdn.net's SEO score?

csdn.net scored 75/100 for SEO in the latest analysis (fair).

What is csdn.net's overall website score?

csdn.net has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.

csdn.net

CSDN_专业开发者社区

Last scanned Jul 24, 2026, 6:17 PM

Overall score

Fair

Summary

CSDN是全球知名中文IT技术交流平台,创建于1999年,包含原创博客、精品问答、职业培训、技术论坛、资源下载等产品服务,提供原创、优质、完整内容的专业IT技术开发社�… This website uses jQuery hosted on ChinaNet-Hebei-Shijiazhuang-IDC - Shijiazhuang IDC network, CHINANET Hebei province, CN. SEO is good (75/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance fair (65/100). Top issue: Meta description longer than 160 characters.

CSDN是全球知名中文IT技术交流平台,创建于1999年,包含原创博客、精品问答、职业培训、技术论坛、资源下载等产品服务,提供原创、优质、完整内容的专业IT技术开发社区.

China

Hosted on ChinaNet-Hebei-Shijiazhuang-IDC - Shijiazhuang IDC network, CHINANET Hebei province, CN

Top issues to fix

8 issues found · 2 high priority

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 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.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.

+2 more issues — details in the sections below.

SEO

4 issue(s) found

Performance

832 ms

Security

HTTPS & header checks

Accessibility

1 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.

Contact

Email, phone, and address published on this site's own pages.

Email: webmaster@csdn.net

Meta tags

Title: CSDN_专业开发者社区
Description: CSDN是全球知名中文IT技术交流平台,创建于1999年,包含原创博客、精品问答、职业培训、技术论坛、资源下载等产品服务,提供原创、优质、完整内容的专业IT技术开发社区.
Canonical: https://www.csdn.net
Language: zh
Charset: utf-8
Viewport: initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Vue.js jQuery

Hosting & CDN

Hosting provider: ChinaNet-Hebei-Shijiazhuang-IDC - Shijiazhuang IDC network, CHINANET Hebei province, CN
CDN provider: —
IP address: 103.41.2.7
ASN: AS134760 (ChinaNet-Hebei-Shijiazhuang-IDC - Shijiazhuang IDC network, CHINANET Hebei province, CN)

DNS records

Type	Value
A	103.41.2.7 103.41.2.10 220.185.184.217 117.149.203.48 220.185.184.36
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	55cb88f4.csdn.net.cname.yunduns.com
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Beijing Xinchacha Credit Management Co., Ltd.
Subject: *.csdn.net
Valid from: Nov 24, 2025
Valid to: Nov 24, 2026
Days until expiry: 122
SAN domains: *.csdn.net, csdn.net

Security headers

Strict-Transport-SecurityEnabled
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 8

Links

10 internal · 122 external · 9 broken

Images

236 total · 25 missing alt

Scripts / Styles

19 scripts · 6 stylesheets

JS / CSS size

2.0 MB · 494 KB

Page size

1.9 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 15
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Meta description longer than 160 characters
No H1 heading found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://csdn.net
Final URL: https://www.csdn.net/
HTTP status: 521
HTTP version: HTTP/1.1
Response time: 832 ms
HTML size: 1.9 KB
Redirect chain: https://csdn.net → https://www.csdn.net/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does csdn.net use?: csdn.net is built with Vue.js, jQuery.
Is csdn.net secure (HTTPS)?: Yes. csdn.net uses TLS 1.3 with a certificate issued by Beijing Xinchacha Credit Management Co., Ltd., valid until Nov 24, 2026.
Who hosts csdn.net?: csdn.net is hosted on ChinaNet-Hebei-Shijiazhuang-IDC - Shijiazhuang IDC network, CHINANET Hebei province, CN.
What is csdn.net's SEO score?: csdn.net scored 75/100 for SEO in the latest analysis (fair).
What is csdn.net's overall website score?: csdn.net has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.