duolingo.cn
Duolingo
Last scanned Jul 25, 2026, 10:25 AM · 2 views
Overall score
Great
Summary
多邻国是世界上最受欢迎的语言学习平台。免费、有趣、科学。现在就登录 duolingo.com 或手机应用开始学习吧！. This website is hosted on ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN. SEO is good (80/100) and accessibility is good (80/100). Security scores good (85/100) and performance excellent (100/100). Top issue: No H1 heading found.
多邻国是世界上最受欢迎的语言学习平台。免费、有趣、科学。现在就登录 duolingo.com 或手机应用开始学习吧！
- China
- Hosted on ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN
Top issues to fix
6 issues found · 2 high priority
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.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
6 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing html lang attribute
AccessibilitySet <html lang="…"> so screen readers pick the right pronunciation rules.
SEO
2 issue(s) found
Performance
541 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
多邻国是世界上最受欢迎的语言学习平台。免费、有趣、科学。现在就登录 duolingo.com 或手机应用开始学习吧！
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Duolingo
- Description
- 多邻国是世界上最受欢迎的语言学习平台。免费、有趣、科学。现在就登录 duolingo.com 或手机应用开始学习吧！
- Canonical
- https://www.duolingo.cn/
- Language
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1,user-scalable=no
- Robots meta
- NOODP
- Manifest
- https://www.duolingo.cn:443/manifest.json
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN
- CDN provider
- —
- IP address
- 110.75.170.67
- ASN
- AS37963 (ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- GoDaddy.com, Inc.
- Subject
- *.duolingo.cn
- Valid from
- May 6, 2026
- Valid to
- Nov 20, 2026
- Days until expiry
- 117
- SAN domains
- *.duolingo.cn, duolingo.cn
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 6 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
16 scripts · 2 stylesheets
JS / CSS size
718 KB · 26.7 KB
Page size
11.1 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 25
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- No H1 heading found
- Missing <html lang> attribute
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://duolingo.cn
- Final URL
- https://www.duolingo.cn:443/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 541 ms
- HTML size
- 11.1 KB
- Redirect chain
- https://duolingo.cn → https://www.duolingo.cn:443/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does duolingo.cn use?
- We did not detect any specific technologies for duolingo.cn in the latest scan.
- Is duolingo.cn secure (HTTPS)?
- Yes. duolingo.cn uses TLS 1.3 with a certificate issued by GoDaddy.com, Inc., valid until Nov 20, 2026.
- Who hosts duolingo.cn?
- duolingo.cn is hosted on ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN.
- What is duolingo.cn's SEO score?
- duolingo.cn scored 80/100 for SEO in the latest analysis (great).
- What is duolingo.cn's overall website score?
- duolingo.cn has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
- Is duolingo.cn hiring?
- duolingo.cn has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card