liaoxuefeng.com
首页 - 廖雪峰的官方网站
Last scanned Jul 27, 2026, 9:43 AM · 1 view
Overall score
Fair
Summary
廖雪峰的官方网站 (liaoxuefeng.com) 研究互联网产品和技术，提供原创中文精品教程. This website uses Tailwind CSS hosted on Fastly behind Fastly CDN. SEO is fair (60/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance good (85/100). Top issue: Missing canonical link.
廖雪峰的官方网站 (liaoxuefeng.com) 研究互联网产品和技术，提供原创中文精品教程
- United States
- Hosted on Fastly
Top issues to fix
12 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.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
214 ms
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
廖雪峰的官方网站 (liaoxuefeng.com) 研究互联网产品和技术，提供原创中文精品教程
Meta tags
- Title
- 首页 - 廖雪峰的官方网站
- Description
- 廖雪峰的官方网站 (liaoxuefeng.com) 研究互联网产品和技术，提供原创中文精品教程
- Canonical
- Language
- zh-CN
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS |
|
| CAA |
|
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- liaoxuefeng.com
- Valid from
- Jun 5, 2026
- Valid to
- Sep 3, 2026
- Days until expiry
- 38
- SAN domains
- liaoxuefeng.com
Security headers
- Strict-Transport-SecurityMissing
- 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 0
Links
12 internal · 2 external · 1 broken
Images
11 total · 11 missing alt
Scripts / Styles
9 scripts · 4 stylesheets
JS / CSS size
1.7 MB · 137 KB
Page size
34.6 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- 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://liaoxuefeng.com
- Final URL
- https://liaoxuefeng.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 214 ms
- HTML size
- 34.6 KB
- Redirect chain
- https://liaoxuefeng.com
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does liaoxuefeng.com use?
- liaoxuefeng.com is built with Tailwind CSS.
- Is liaoxuefeng.com secure (HTTPS)?
- Yes. liaoxuefeng.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 3, 2026.
- Who hosts liaoxuefeng.com?
- liaoxuefeng.com is hosted on Fastly, behind Fastly CDN.
- What is liaoxuefeng.com's SEO score?
- liaoxuefeng.com scored 60/100 for SEO in the latest analysis (fair).
- What is liaoxuefeng.com's overall website score?
- liaoxuefeng.com has an overall SiteGraph score of 68/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card