classcard.net
클래스카드 | 영어쌤 1/3이 선택한 스마트 단어장!
Last scanned Jul 26, 2026, 2:25 AM · 2 views
Overall score
Fair
Summary
클래스카드, 스마트교육, 스마트러닝, 선생님이 만들어 우리반이 함께 공부하는 스마트 플래시카드. This website uses Apache hosted on SKB-AS-KR - SK Broadband Co Ltd, KR. SEO is good (75/100) and accessibility is fair (60/100). Security scores fair (70/100) and performance fair (70/100). Top issue: Title longer than 60 characters.
클래스카드, 스마트교육, 스마트러닝, 선생님이 만들어 우리반이 함께 공부하는 스마트 플래시카드
- South Korea
- Hosted on SKB-AS-KR - SK Broadband Co Ltd, KR
Top issues to fix
9 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-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+3 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
2.68 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
클래스카드, 스마트교육, 스마트러닝, 선생님이 만들어 우리반이 함께 공부하는 스마트 플래시카드
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- 클래스카드 | 영어쌤 1/3이 선택한 스마트 단어장!
- Description
- 클래스카드, 스마트교육, 스마트러닝, 선생님이 만들어 우리반이 함께 공부하는 스마트 플래시카드
- Canonical
- https://www.classcard.net
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width
- Robots meta
- Manifest
- https://www.classcard.net/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- SKB-AS-KR - SK Broadband Co Ltd, KR
- CDN provider
- —
- IP address
- 114.203.209.251
- ASN
- AS9318 (SKB-AS-KR - SK Broadband Co Ltd, KR)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.2
- Issuer
- DigiCert Inc
- Subject
- *.classcard.net
- Valid from
- Mar 31, 2026
- Valid to
- Oct 15, 2026
- Days until expiry
- 81
- SAN domains
- *.classcard.net, classcard.net
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
14 internal · 18 external · 1 broken
Images
85 total · 84 missing alt
Scripts / Styles
23 scripts · 13 stylesheets
JS / CSS size
667 KB · 522 KB
Page size
206 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 26
- sitemap.xml
- Found
- URLs in sitemap
- 3732
SEO issues
- Title longer than 60 characters
- No H1 heading found
- No structured data (JSON-LD) found
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://classcard.net
- Final URL
- https://www.classcard.net/
- HTTP status
- 200
- HTTP version
- HTTP/1.1
- Response time
- 2.67 s
- HTML size
- 206 KB
- Redirect chain
- https://classcard.net → https://www.classcard.net/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does classcard.net use?
- classcard.net is built with Bootstrap, jQuery, Google Analytics, Apache.
- Is classcard.net secure (HTTPS)?
- Yes. classcard.net uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Oct 15, 2026.
- Who hosts classcard.net?
- classcard.net is hosted on SKB-AS-KR - SK Broadband Co Ltd, KR.
- What is classcard.net's SEO score?
- classcard.net scored 75/100 for SEO in the latest analysis (fair).
- What is classcard.net's overall website score?
- classcard.net has an overall SiteGraph score of 70/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card