K12online.vn - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
38% 
Page structure
50% 
Link structure
97% 
Server
38% 
External factors
100% 
SEO Score
Response time
3.29 s
File size
100.40 kB
Words
1673
Media files
85
Number of links
17 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Hệ thống quản lý học và thi trực tuyến K12Online
The length of the page title is perfect. (442 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Hệ thống quản lý học và thi trực tuyến K12Online
The length of the meta description is perfect. (442 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: vi
Language defined in HTML: vi
Server location: United States of America
The following language is defined by HTML: vi
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no
descriptionHệ thống quản lý học và thi trực tuyến K12Online
keywordsEmpty
AuthorHệ thống Quản lý Học và Thi trực tuyến K12Online
copyrightHệ thống Quản lý Học và Thi trực tuyến K12Online
yandex-verification1c3067f86f088af4
langvi
fb:app_id1396997063955601
og:imagehttps://static.k12online.vn/upload/K12/logo2.png
og:typewebsite
og:site_namek12online.vn
og:titleHệ thống quản lý học và thi trực tuyến K12Online
og:descriptionEmpty
X-UA-CompatibleIE=edge
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: Giáo viên có thể xây dựng và thiết kế bài giảng trực tuyến để học sinh...
The average number of words per sentence of 42.18 words is high.
This page contains 1673 words. That's ok.
16.9% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
30 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 4 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 33 tags for this page.
Image SEO
(Somewhat important)
78 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/LMS/K12/images/bg-login-SSO.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngĐầy đủ, toàn trình
....k12online.vn/Common/images/bg_trans.pngĐơn giản, dễ sử dụng
....k12online.vn/Common/images/bg_trans.pngĐáp ứng quy chuẩn
....k12online.vn/Common/images/bg_trans.pngTính hệ thống
....k12online.vn/Common/images/bg_trans.pngLiên tục cập nhật
....k12online.vn/Common/images/bg_trans.pngCông nghệ tiên tiến
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
/LMS/K12/images/bg-check.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
....k12online.vn/Common/images/bg_trans.pngNo alt attribute provided
...oad/2001774/20201116/otherLogo_9e099.pngLogo

Page structure

H1 heading
(Critically important)
Điểm khác biệt của hệ thống
Too many H1 headings
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Điểm khác biệt của hệ thống
H1 Tính năng dành cho giáo viên
H1 Tính năng dành cho học sinh
H1 Tính năng dành cho đối tượng quản lý
H1 Gói phần mềm
H5 Thầy Lâm Văn Điện
H5 Thầy Trần Ngọc Thái
H5 Cô Phạm Thị Hạnh
H5 Thầy Nguyễn Việt Dũng
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://k12online.vn/A-TITLE Trang chủ
https://k12online.vn/Text duplicate Trang chủ
A-TITLE Trang chủ
https://www.youtube.com/watch?...New window External Subdomain Giới thiệu
A-TITLE Giới thiệu
https://k12online.vn/Điểm khác biệt
A-TITLE Điểm khác biệt
https://k12online.vn/Tính năng
A-TITLE Tính năng
https://k12online.vn/Phản hồi
A-TITLE Phản hồi
https://k12online.vn/Liên hệ
A-TITLE Liên hệ
https://play.google.com/store/...External Subdomain A-TITLE Tải xuống
https://apps.apple.com/vn/app/...External Subdomain Text duplicate A-TITLE Tải xuống
https://k12online.vn/IMG-ALT Logo
https://www.youtube.com/channe...External Subdomain A-TITLE youtube
https://youtu.be/cGTk_5t6-tQExternal Giới thiệu chung
A-TITLE Giới thiệu chung
https://k12online.vn/Text duplicate Điểm khác biệt
A-TITLE Điểm khác biệt
https://k12online.vn/Tính năng chính
A-TITLE Tính năng chính
https://k12online.vn/Phản hồi của thầy/cô
A-TITLE Phản hồi của thầy/cô
https://hotro.k12online.vn/External Subdomain Trung tâm hỗ trợ
A-TITLE Trung tâm hỗ trợ
/thong-tin-k12onlineThông tin K12Online
A-TITLE Thông tin K12Online
/lien-ket/huong-dan-su-dungHướng dẫn sử dụng
A-TITLE Hướng dẫn sử dụng
/lien-ket/cau-hoi-thuong-gapCâu hỏi thường gặp
A-TITLE Câu hỏi thường gặp
/lien-ket/tinh-nang-bo-sungTính năng bổ sung
A-TITLE Tính năng bổ sung
/chinh-sach-bao-matChính sách bảo mật
A-TITLE Chính sách bảo mật
/lien-ket/dieu-khoan-su-dung-w...Điều khoản sử dụng website
A-TITLE Điều khoản sử dụng website
/lien-ket/dieu-khoan-su-dung-s...Điều khoản sử dụng sản phẩm
A-TITLE Điều khoản sử dụng sản phẩm

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://k12online.vn/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is very slow (3.29 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page loads 4 JavaScript files. This may affect the load time negatively.
This page only loads 2 CSS files. That's ok.
The file size of the HTML document is fine (100 kB).

HTTP Response Header

NameValue
servernginx
dateFri, 01 Nov 2024 03:29:04 GMT
content-typetext/html; charset=UTF-8
connectionclose
varyAccept-Encoding
expiresThu, 19 Nov 1981 08:52:00 GMT
cache-controlno-store, no-cache, must-revalidate
pragmano-cache
set-cookie84 Characters
access-control-allow-originhttps://k12online.vn
access-control-allow-credentialstrue
access-control-allow-methodsGET, POST, HEAD
access-control-allow-headersAccept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With
cross-origin-opener-policyunsafe-none
cross-origin-embedder-policyunsafe-none
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 257 referring domains.
This page has 90,286 backlinks.
This page has backlinks from 94 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

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            k12online.vn
Hệ thống quản lý học và thi trực tuyến K12Online

Hệ thống quản lý học và thi trực tuyến K12Online
Most important keywords

            
Following keywords were found. You can check the keyword optimization of this page for each keyword.
KeywordResultRecheck
thống75%Check
Hệ thống75%Check
K12Online70%Check
Hệ thống quản70%Check
Hệ thống quản lý68%Check
thống quản lý học65%Check
Học62%Check
quản62%Check
trực tuyến K12Online62%Check
Quản trị hệ thống61%Check
  
      Show more keywords and terms  
            

                

                    
                    

                        
                    

                    

                        
                    

                

            

            
                    

                

            


                    

            

                

                    

                    

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