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SGSiteGraph

learnus.org

LearnUs

Last scanned Jul 26, 2026, 12:49 PM

73

Overall score

Fair

Summary

This website uses Apache. SEO is fair (55/100) and accessibility is good (75/100). Security scores good (75/100) and performance excellent (90/100). Top issue: Missing meta description.

Top issues to fix

12 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add 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

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

+6 more issues — details in the sections below.

55

SEO

6 issue(s) found

90

Performance

463 ms

75

Security

HTTPS & header checks

75

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
LearnUs
Description
Canonical
Language
ko
Charset
utf-8
Viewport
width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, target-densitydpi=medium-dpi
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
연세대학교 스마트 교육 플랫폼 LearnUs
og:description
포스트 코로나 시대, 온라인 교육을 선도하는 대학 비대면, 온라인 강의를 위한 연세대학교의 교육혁신 플랫폼
og:type
website
og:url
https://www.learnus.org

Twitter Card

twitter:card
twitter:title
twitter:description

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
CDN provider
IP address
ASN

DNS records

TypeValue
A
AAAA
MX
TXT
NS
CAA
CNAME
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.2
Issuer
DigiCert Inc
Subject
*.learnus.org
Valid from
Jan 5, 2026
Valid to
Feb 5, 2027
Days until expiry
192
SAN domains
*.learnus.org, learnus.org

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 8

Links

153 internal · 0 external · 20 broken

Images

85 total · 18 missing alt

Scripts / Styles

30 scripts · 4 stylesheets

JS / CSS size

43.4 KB · 120 B

Page size

270 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text
  • No H1 heading found

Scan details

Requested URL
https://learnus.org
Final URL
https://www.learnus.org/
HTTP status
200
HTTP version
HTTP/1.1
Response time
458 ms
HTML size
270 KB
Redirect chain
https://learnus.org → https://www.learnus.org/

See something wrong on this report? Request a correction

Frequently asked questions

What technology does learnus.org use?
learnus.org is built with jQuery, Google Analytics, Apache.
Is learnus.org secure (HTTPS)?
Yes. learnus.org uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Feb 5, 2027.
Who hosts learnus.org?
Hosting provider information for learnus.org is not available yet.
What is learnus.org's SEO score?
learnus.org scored 55/100 for SEO in the latest analysis (fair).
What is learnus.org's overall website score?
learnus.org has an overall SiteGraph score of 73/100, combining SEO, performance, security, and accessibility.