lewei50.com
首页 - 乐联网 - 乐为物联开放平台 - 物联网云服务运营专家
Last scanned Jul 26, 2026, 4:17 PM · 1 view
Overall score
Fair
Summary
乐联网是北京乐为物联科技有限公司面向物联网产品的开放平台. This website uses jQuery. SEO is fair (55/100) and accessibility is poor (45/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.
乐联网是北京乐为物联科技有限公司面向物联网产品的开放平台
Top issues to fix
16 issues found · 5 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 viewport meta tag
AccessibilityAdd <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
+10 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
1.68 s
Security
HTTPS & header checks
Accessibility
4 issue(s) found
Organization
Company details published in this site's own structured data.
乐联网是北京乐为物联科技有限公司面向物联网产品的开放平台
Contact
Email, phone, and address published on this site's own pages.
- service@lewei50.com
Meta tags
- Title
- 首页 - 乐联网 - 乐为物联开放平台 - 物联网云服务运营专家
- Description
- 乐联网是北京乐为物联科技有限公司面向物联网产品的开放平台
- Canonical
- Language
- Charset
- utf-8
- Viewport
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- *.lewei50.com
- Valid from
- Jul 13, 2026
- Valid to
- Oct 11, 2026
- Days until expiry
- 73
- SAN domains
- *.lewei50.com
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 3 · H3 0
Links
26 internal · 8 external · 20 broken
Images
6 total · 6 missing alt
Scripts / Styles
7 scripts · 3 stylesheets
JS / CSS size
1.4 KB · 1.3 KB
Page size
19.6 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 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
- Over half of images are missing alt text
- No H1 heading found
- Missing <html lang> attribute
- Missing viewport meta tag
Scan details
- Requested URL
- https://lewei50.com
- Final URL
- https://www.lewei50.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.68 s
- HTML size
- 19.6 KB
- Redirect chain
- https://lewei50.com → https://www.lewei50.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does lewei50.com use?
- lewei50.com is built with Bootstrap, jQuery.
- Is lewei50.com secure (HTTPS)?
- Yes. lewei50.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 11, 2026.
- Who hosts lewei50.com?
- Hosting provider information for lewei50.com is not available yet.
- What is lewei50.com's SEO score?
- lewei50.com scored 55/100 for SEO in the latest analysis (fair).
- What is lewei50.com's overall website score?
- lewei50.com has an overall SiteGraph score of 64/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card