51jiaoxi.com
教习网-PPT课件,教案,试题试卷-精选教学资源下载网
Last scanned Aug 3, 2026, 9:00 PM · 10 views
Overall score
Fair
Summary
教习网精选小学、初中、高中、中职语文、数学、英语、道德与法治、科学、物理、化学、生物、历史、地理、政治等学科课堂教学所需的PPT课件、教案教学设计、试�… This website uses Google Analytics behind Cloudflare CDN. SEO is fair (55/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance fair (70/100). Top issue: Title longer than 60 characters.
教习网精选小学、初中、高中、中职语文、数学、英语、道德与法治、科学、物理、化学、生物、历史、地理、政治等学科课堂教学所需的PPT课件、教案教学设计、试题试卷等资源下载，涵盖部编版、人教版、北师大版等主流版本，助老师们轻松备课！
Top issues to fix
14 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.
+8 more issues — details in the sections below.
SEO
7 issue(s) found
Performance
1.83 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Score history
+1 overall since Jul 26, 2026
- Overall
- 62
- SEO
- 55
- Security
- 65
- Performance
- 70
- Accessibility
- 60
Organization
Company details published in this site's own structured data.
教习网精选小学、初中、高中、中职语文、数学、英语、道德与法治、科学、物理、化学、生物、历史、地理、政治等学科课堂教学所需的PPT课件、教案教学设计、试题试卷等资源下载，涵盖部编版、人教版、北师大版等主流版本，助老师们轻松备课！
Meta tags
- Title
- 教习网-PPT课件,教案,试题试卷-精选教学资源下载网
- Description
- 教习网精选小学、初中、高中、中职语文、数学、英语、道德与法治、科学、物理、化学、生物、历史、地理、政治等学科课堂教学所需的PPT课件、教案教学设计、试题试卷等资源下载，涵盖部编版、人教版、北师大版等主流版本，助老师们轻松备课！
- Canonical
- Language
- zh-cn
- Charset
- UTF-8
- Viewport
- width=device-width,initial-scale=1,maximum-scale=1
- Robots meta
- Manifest
- https://www.51jiaoxi.com/v3/json/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- 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
- Google Trust Services
- Subject
- www.51jiaoxi.com
- Valid from
- Jul 21, 2026
- Valid to
- Oct 19, 2026
- Days until expiry
- 76
- SAN domains
- www.51jiaoxi.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 0 · H3 5
Links
566 internal · 44 external · 20 broken
Images
44 total · 25 missing alt
Scripts / Styles
9 scripts · 3 stylesheets
JS / CSS size
2.5 KB · 0 B
Page size
1.0 MB
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
- Meta description longer than 160 characters
- Missing canonical link
- No H1 heading found
- No structured data (JSON-LD) found
- 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://51jiaoxi.com
- Final URL
- https://www.51jiaoxi.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.81 s
- HTML size
- 1.0 MB
- Redirect chain
- https://51jiaoxi.com → https://www.51jiaoxi.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does 51jiaoxi.com use?
- 51jiaoxi.com is built with Laravel, jQuery, Google Analytics, Cloudflare Analytics.
- Is 51jiaoxi.com secure (HTTPS)?
- Yes. 51jiaoxi.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 19, 2026.
- Who hosts 51jiaoxi.com?
- Hosting provider information for 51jiaoxi.com is not available yet.
- What is 51jiaoxi.com's SEO score?
- 51jiaoxi.com scored 55/100 for SEO in the latest analysis (fair).
- What is 51jiaoxi.com's overall website score?
- 51jiaoxi.com has an overall SiteGraph score of 62/100, combining SEO, performance, security, and accessibility.
- Has 51jiaoxi.com's score changed over time?
- 51jiaoxi.com's overall score has improved by 1 point (from 61 to 62) since Jul 26, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card