luogu.com.cn
首页 - 洛谷 | 计算机科学教育新生态
Last scanned Jul 27, 2026, 9:43 AM · 1 view
Overall score
Fair
Summary
洛谷创办于2013年，致力于为参加noip、noi、acm的选手提供清爽、快捷的编程体验。它拥有在线测题系统、强大的社区、在线学习功能。很多教程内容由各位oiers提供的，… This website uses Cloudflare Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is fair (65/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance fair (50/100). Top issue: Meta description longer than 160 characters.
洛谷创办于2013年，致力于为参加noip、noi、acm的选手提供清爽、快捷的编程体验。它拥有在线测题系统、强大的社区、在线学习功能。很多教程内容由各位oiers提供的，内容广泛。无论是初学oi的蒟蒻，还是久经沙场的神犇，均可从中获益，也可以帮助他人，共同进步。是学习noip等竞赛时理想的网站。
- United States
- Hosted on Cloudflare
Top issues to fix
10 issues found · 4 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.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
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.
+4 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
2.05 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
洛谷创办于2013年，致力于为参加noip、noi、acm的选手提供清爽、快捷的编程体验。它拥有在线测题系统、强大的社区、在线学习功能。很多教程内容由各位oiers提供的，内容广泛。无论是初学oi的蒟蒻，还是久经沙场的神犇，均可从中获益，也可以帮助他人，共同进步。是学习noip等竞赛时理想的网站。
Contact
Email, phone, and address published on this site's own pages.
Source: https://www.luogu.com.cn/contact
Meta tags
- Title
- 首页 - 洛谷 | 计算机科学教育新生态
- Description
- 洛谷创办于2013年，致力于为参加noip、noi、acm的选手提供清爽、快捷的编程体验。它拥有在线测题系统、强大的社区、在线学习功能。很多教程内容由各位oiers提供的，内容广泛。无论是初学oi的蒟蒻，还是久经沙场的神犇，均可从中获益，也可以帮助他人，共同进步。是学习noip等竞赛时理想的网站。
- Canonical
- Language
- zh
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.57.162
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- www.luogu.com.cn
- Valid from
- Jul 19, 2026
- Valid to
- Oct 17, 2026
- Days until expiry
- 82
- SAN domains
- www.luogu.com.cn
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 0 · H2 5 · H3 8
Links
81 internal · 8 external · 0 broken
Images
31 total · 31 missing alt
Scripts / Styles
20 scripts · 6 stylesheets
JS / CSS size
5.0 MB · 521 KB
Page size
62.4 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 3
- sitemap.xml
- Found
- URLs in sitemap
- 9
SEO issues
- Meta description longer than 160 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://luogu.com.cn
- Final URL
- https://www.luogu.com.cn/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 2.05 s
- HTML size
- 62.4 KB
- Redirect chain
- https://luogu.com.cn → https://www.luogu.com.cn/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does luogu.com.cn use?
- luogu.com.cn is built with jQuery, Cloudflare Analytics.
- Is luogu.com.cn secure (HTTPS)?
- Yes. luogu.com.cn uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 17, 2026.
- Who hosts luogu.com.cn?
- luogu.com.cn is hosted on Cloudflare, behind Cloudflare CDN.
- What is luogu.com.cn's SEO score?
- luogu.com.cn scored 65/100 for SEO in the latest analysis (fair).
- What is luogu.com.cn's overall website score?
- luogu.com.cn has an overall SiteGraph score of 60/100, combining SEO, performance, security, and accessibility.
- Is luogu.com.cn hiring?
- luogu.com.cn has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card