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SGSiteGraph

duytan.edu.vn

Last scanned Jul 26, 2026, 5:34 AM

75

Overall score

Fair

Summary

This website uses jQuery. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance fair (70/100). Top issue: Missing <title>.

Top issues to fix

10 issues found · 3 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing title tag

    SEO

    Add a unique, descriptive <title> tag — it's the single most important on-page SEO element.

  • Missing meta description

    SEO

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

  • 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.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

+4 more issues — details in the sections below.

55

SEO

5 issue(s) found

70

Performance

3.43 s

90

Security

HTTPS & header checks

90

Accessibility

1 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.

Organization

Company details published in this site's own structured data.

FacebookX (Twitter)YouTubeX (Twitter)FacebookX (Twitter)YouTube

Contact

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

Meta tags

Title
Description
Canonical
http://duytan.edu.vn
Language
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
INDEX, FOLLOW
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
website
og:url
http://duytan.edu.vn

Twitter Card

twitter:card
summary
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

BootstrapjQuery

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
103.7.177.36
ASN
—

DNS records

TypeValue
A
  • 103.7.177.36
AAAA—
MX
  • ASPMX4.GOOGLEMAIL.COM
  • ASPMX2.GOOGLEMAIL.COM
  • ASPMX3.GOOGLEMAIL.COM
  • ALT1.ASPMX.L.GOOGLE.COM
  • ASPMX5.GOOGLEMAIL.COM
  • ALT2.ASPMX.L.GOOGLE.COM
  • ASPMX.L.GOOGLE.COM
TXT
  • _globalsign-domain-verification=IWiLstsRkxo6pePsCjWd_BfR4bCAx1u2kKUoK2qjy6
  • v=spf1 include:_spf.google.com ~all
  • openai-domain-verification=dv-Mw8cXvcv7oOeRI6pW9EINyuY
NS
  • ns1.duytan.edu.vn
  • ns2.duytan.edu.vn
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
GlobalSign nv-sa
Subject
duytan.edu.vn
Valid from
May 18, 2026
Valid to
Dec 3, 2026
Days until expiry
129
SAN domains
duytan.edu.vn, *.duytan.edu.vn

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 12 · H3 28

Links

123 internal · 61 external · 3 broken

Images

70 total · 0 missing alt

Scripts / Styles

9 scripts · 6 stylesheets

JS / CSS size

161 KB · 484 KB

Page size

126 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
2
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing <title>
  • Missing meta description
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute

Scan details

Requested URL
https://duytan.edu.vn
Final URL
https://duytan.edu.vn
HTTP status
200
HTTP version
HTTP/2
Response time
3.43 s
HTML size
126 KB
Redirect chain
https://duytan.edu.vn

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does duytan.edu.vn use?
duytan.edu.vn is built with Bootstrap, jQuery.
Is duytan.edu.vn secure (HTTPS)?
Yes. duytan.edu.vn uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Dec 3, 2026.
Who hosts duytan.edu.vn?
Hosting provider information for duytan.edu.vn is not available yet.
What is duytan.edu.vn's SEO score?
duytan.edu.vn scored 55/100 for SEO in the latest analysis (fair).
What is duytan.edu.vn's overall website score?
duytan.edu.vn has an overall SiteGraph score of 75/100, combining SEO, performance, security, and accessibility.