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Report generated a month ago
https://acornedu.co.kr
Your general SEO Checkup Score
Archived
58/100
SEO Score
Average SEO score of top 100 sites: 74%
This website received an SEO score of 58 out of 100, which is below the average score of 74. However, there are 22 important issues that need to be fixed to improve your website's ranking on search engines and enhance its overall performance.
22 Failed
5 Warnings
47 Passed
Issues to fix
HIGH
To provide a good user experience, Google recommends that sites should aim for a Largest Contentful Paint duration of 2.5 seconds or less.
HIGH
It is recommended to avoid URL parameters and to use hyphens to separate words in the URL structure, rather than underscores.
HIGH
To address URL canonicalization issues, it is recommended to select a primary URL for your webpage and set up redirects from all other variations to the preferred one.
HIGH
To ensure that Search Engines can accurately identify the topic of this webpage, it is important to include the most common keywords in the title tag, meta description, and heading tags.
HIGH
Consider using structured data in your webpage as it can help search engines gain a better understanding of your content.
HIGH
To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.
HIGH
Using images in a modern format can significantly reduce the file size and improve the loading speed of a webpage, providing a better user experience and potentially increasing engagement.
HIGH
Although the initial HTML is loaded securely over HTTPS, some resources are loaded over an insecure HTTP connection. This may cause blocked content or unexpected page behavior.
HIGH
Users may abandon pages that take longer than 5 seconds to load, resulting in a potential loss of up to 50% of visitors. Faster loading pages can lead to increased traffic, better conversions, and higher sales.
HIGH
HTTP/2 protocol offers several key improvements, including faster page load times, improved performance, better security and more efficient use of network resources.
HIGH
By creating a custom 404 error page with helpful links and information, users are more likely to stay on the site and continue to explore.
MEDIUM
JavaScript errors can impact user experience and may prevent users from viewing the page properly.
MEDIUM
Consider adding cache headers for JavaScript resources to speed up the webpage for returning users.
MEDIUM
Serve properly sized images to reduce page loading times and to improve user's experience.
MEDIUM
Consider adding cache headers for images to improve website performance. With cache headers, browsers can cache images and serve them quickly to returning visitors, rather than re-fetching them each time.
MEDIUM
Consider adding cache headers for CSS resources to speed up the webpage for returning users.
MEDIUM
Avoid performance and security issues by adding "rel=noopener" or "rel=noreferrer" to your "target=_blank" links.
LOW
Resolving errors identified by the Chrome DevTools Console can improve user experience.
LOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
LOW
Consider moving inline CSS styles to an external stylesheet to improve site performance and maintain separation of content and design.
LOW
Strip out any unnecessary metadata to improve loading time, security, and privacy. Metadata should not exceed 16% of the image size.
LOW
Consider adding the Strict-Transport-Security header to your webpage to ensure that web traffic is encrypted over HTTPS, mitigating the risk of man-in-the-middle attacks and other security threats.
Common SEO issues
Score: 64
Failed: 6
Warnings: 2
Passed: 18
Meta Title Test100% of top 100 sites passed
  • This webpage is using a title tag.
Text: 에이콘아카데미(강남) K디지털트레이닝 ☎ 02-539-8879
Length: 34 characters
Meta Description Test96% of top 100 sites passed
  • This webpage is using a meta description tag with a length of 61 characters. We recommend using well-written and inviting meta descriptions with a length between 150 and 220 characters (spaces included).
Text: 취업률 우수기관 에이콘 아카데미,국비지원 무료교육,빅데이터분석,자바개발자,취업전문학원,k디지털,K디지털트레이닝
Length: 61 characters
Google Search Results Preview Test
Desktop version
https://acornedu.co.kr/에이콘아카데미(강남) K디지털트레이닝 ☎ 02-539-8879취업률 우수기관 에이콘 아카데미,국비지원 무료교육,빅데이터분석,자바개발자,취업전문학원,k디지털,K디지털트레이닝
Mobile version
https://acornedu.co.kr/에이콘아카데미(강남) K디지털트레이닝 ☎ 02-539-8879취업률 우수기관 에이콘 아카데미,국비지원 무료교육,빅데이터분석,자바개발자,취업전문학원,k디지털,K디지털트레이닝
Social Media Meta Tags Test89% of top 100 sites passed
  • This webpage is using social media meta tags.
Open Graph Meta Tags
og:title
에이콘아카데미(강남) K디지털트레이닝 ☎ 02-539-8879
og:url
https://www.acornedu.co.kr/
og:image
https://acornedu.co.kr/images/n_logo.gif?2
og:description
취업률 우수기관 에이콘 아카데미,국비지원 무료교육,빅데이터분석,자바개발자,취업전문학원,k디지털,K디지털트레이닝
Most Common Keywords Test
  • There is likely no optimal keyword density (search engine algorithms have evolved beyond keyword density metrics as a significant ranking factor). It can be useful, however, to note which keywords appear most often on your page and if they reflect the intended topic of your page. More importantly, the keywords on your page should appear within natural sounding and grammatically correct copy.
6java5기업일배움카드4양성과정3프로젝트3국비대상자
Keywords Usage Test45% of top 100 sites passed
  • The most common keywords of this webpage are not distributed across the important HTML tags! Primary keywords should appear in title tag, meta description and heading tags to help Search Engines to properly identify the topic of this webpage.
Keyword
Title tag
Meta description
Headings
java
기업일배움카드
양성과정
프로젝트
국비대상자
Keywords Cloud Test
bigdatacentercopyrightcoursecustomerdigitalhbilabhrd수강후기iot기반의javak디지털트레이닝menuprojectpythonpython을quickreservedreviewrightsstorytalktemplatetensorflow간편조회강남본원강남본원소개강사모집개설과정고객센터공지사항교육시스템교육원위치교육일정국비대상자국비지원국비지원무료교육기술스토리기업일배움카드기업출강문의대표문의데이터분석을모집중인무료국비지원박영권강사의방문상담예약부트캠프사업자등록번호사이트맵삼원타워서울강남서울특별시수강생story수강생을수강생프로젝트수강후기시작하는실습서입니다아카데미sns아카데미story아카데미소개아카데미연혁양성과정에이콘book에이콘story에이콘블로그에이콘아카데미에이콘이즈오시는길온라인결제시스템웹앱개발자인스타그램인재추천기업입문자를전화문의하기준비하는직무교육취업생story취업시스템안내취업연수story취업연수과정취업지원실취업현황카카오톡카카오톡문의카카오톡친구테헤란로텐서플로우통신판매업신고증트레이닝페이스북프로그래밍프로그래밍을프로젝트프로젝트템플릿핀테크story현업전문가회원가입
Competitor Domains Test
Understand your competitors' SEO and backlink profile

Get related competitors and their domain authority score in relation to your domain.

Heading Tags Test59% of top 100 sites passed
  • This webpage contains headings tags.
H1 tags
회원가입
Robots.txt Test99% of top 100 sites passed
  • This website is using a robots.txt file.
https://acornedu.co.kr/robots.txt
Sitemap Test74% of top 100 sites passed
  • This website has a sitemap file.
https://acornedu.co.kr/sitemap.xml
Looking for a Sitemap Generator Tool?

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SEO Friendly URL Test25% of top 100 sites passed
  • This webpage contains URLs that are not SEO friendly!
See results list
Image Alt Test71% of top 100 sites passed
  • This webpage is using "img" tags with empty or missing "alt" attribute!
See full list
Responsive Image Test28% of top 100 sites passed
  • Not all images in this webpage are properly sized! This webpage is serving images that are larger than needed for the size of the user's viewport.
See results list
Image Aspect Ratio Test75% of top 100 sites passed
  • All image display dimensions match the natural aspect ratio.
Inline CSS Test8% of top 100 sites passed
  • This webpage is using inline CSS styles!
See results list
Deprecated HTML Tags Test94% of top 100 sites passed
  • This webpage does not use HTML deprecated tags.
Google Analytics Test65% of top 100 sites passed
  • This webpage is using Google Analytics.
Favicon Test100% of top 100 sites passed
  • favicon
    This website appears to have a favicon.
JS Error Test79% of top 100 sites passed
  • We've found JavaScript errors on this webpage!
See results list
Console Errors Test41% of top 100 sites passed
  • This webpage has some errors caught by the Chrome DevTools Console!
See results list
Charset Declaration Test100% of top 100 sites passed
  • This webpage has a character encoding declaration.
Content-Type: text/html;charset=utf-8
Social Media Test57% of top 100 sites passed
  • This webpage is connected successfully with social media using:
Facebook 
Speed optimizations
Score: 59
Failed: 9
Warnings: 2
Passed: 14
HTML Page Size Test21% of top 100 sites passed
  • The size of this webpage's HTML is 18.98 Kb and is under the average webpage's HTML size of 33 Kb. Faster loading websites result in a better user experience, higher conversion rates, and generally better search engine rankings.
DOM Size Test54% of top 100 sites passed
  • The Document Object Model (DOM) of this webpage has 458 nodes which is less than the recommended value of 1,500 nodes.
HTML Compression/GZIP Test97% of top 100 sites passed
  • This webpage is successfully compressed using gzip compression on your code. The HTML code is compressed from 59.46 Kb to 18.98 Kb (68% size savings). This helps ensure a faster loading webpage and improved user experience.
Site Loading Speed Test66% of top 100 sites passed
  • The loading time of this webpage (measured from N. Virginia, US) is around 7.64 seconds and is greater than the average loading speed which is 5 seconds!
Accurate loading speed and website loading speed monitor

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JS Execution Time Test71% of top 100 sites passed
  • The JavaScript code used by this webpage is executed in less than 2 seconds.
Page Objects Test
  • This webpage is using more than 20 http requests, which can slow down page loading and negatively impact user experience!
Content size by content type
Content type
Percent
Size
image
77.1 %
7.27 Mb
javascript
17.9 %
1.69 Mb
css
2.4 %
227.07 Kb
font
1.5 %
148.22 Kb
html
0.6 %
58.63 Kb
other
0.5 %
44.07 Kb
TOTAL
100%
9.42 Mb
Requests by content type
Content type
Percent
Requests
image
44.4 %
59
javascript
21.8 %
29
other
15.0 %
20
css
6.8 %
9
font
6.8 %
9
html
5.3 %
7
TOTAL
100%
133
Content size by domain
Domain
Percent
Size
acornedu.co.kr
80.0 %
7.54 Mb
youtube.com
10.5 %
1012.85 Kb
googletagmanager.com
3.5 %
338.12 Kb
fonts.gstatic.com
1.5 %
148.22 Kb
fonts.googleapis.com
1.4 %
138.68 Kb
connect.facebook.net
0.8 %
72.76 Kb
jnn-pa.googleapis.com
0.4 %
40.62 Kb
cr.acecounter.com
0.3 %
32.04 Kb
fs.bizspring.net
0.3 %
30.90 Kb
clarity.ms
0.3 %
26.49 Kb
Other
0.9 %
88.26 Kb
TOTAL
100%
9.42 Mb
Requests by domain
Domain
Percent
Requests
acornedu.co.kr
47.4 %
63
fonts.gstatic.com
6.8 %
9
youtube.com
6.0 %
8
googletagmanager.com
3.0 %
4
google-analytics.com
3.0 %
4
connect.facebook.net
2.3 %
3
wcs.naver.com
2.3 %
3
stats.g.doubleclick.net
2.3 %
3
google.com
2.3 %
3
l.clarity.ms
2.3 %
3
Other
22.6 %
30
TOTAL
100%
133
Page Cache Test (Server Side Caching)100% of top 100 sites passed
  • This webpage is using a caching mechanism. Caching helps speed page loading times as well as reduces server load.
Flash Test100% of top 100 sites passed
  • This webpage does not include flash objects (an outdated technology that was sometimes used to deliver rich multimedia content). Flash content does not work well on mobile devices, and is difficult for crawlers to interpret.
CDN Usage Test97% of top 100 sites passed
  • This webpage is not serving all resources (images, javascript and css) from CDNs!
See results list
Modern Image Format Test38% of top 100 sites passed
  • This webpage is not serving images in a modern format! Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
See results list
Image Metadata Test72% of top 100 sites passed
  • This webpage is using images with large metadata (more than 16% of the image size)! Stripping out unnecessary metadata tags can improve not only the loading time but also the security and privacy of a webpage.
See results list
Image Caching Test97% of top 100 sites passed
See results list
JavaScript Caching Test95% of top 100 sites passed
  • This webpage is not using cache headers for JavaScript resources! Setting cache headers can help to speed up the webpage for returning users.
See results list
CSS Caching Test96% of top 100 sites passed
  • This webpage is not using cache headers for CSS resources! Setting cache headers can help to speed up the webpage for returning users.
See results list
JavaScript Minification Test96% of top 100 sites passed
  • All JavaScript files used by this webpage are minified.
See results list
CSS Minification Test100% of top 100 sites passed
  • All CSS resources used by this webpage are minified.
See results list
Render Blocking Resources Test10% of top 100 sites passed
  • This webpage is using render blocking resources! Eliminating render-blocking resources can help this webpage to load significantly faster and will improve the website experience for your visitors.
See results list
Nested Tables Test99% of top 100 sites passed
  • This webpage is not using nested tables. This speeds up page loading time and optimizes the user experience.
Frameset Test100% of top 100 sites passed
  • This webpage does not use frames.
Doctype Test100% of top 100 sites passed
  • This webpage has a doctype declaration.
<!DOCTYPE html>
URL Redirects Test98% of top 100 sites passed
  • This URL doesn't have any redirects (which could potentially cause site indexation issues and site loading delays).
Time To First Byte Test98% of top 100 sites passed
  • The Time To First Byte value of this webpage is 0.198 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.

0.198 s

0.8 s

1.8 s

First Contentful Paint Test94% of top 100 sites passed
  • The First Contentful Paint value of this webpage is 2.541 seconds. To provide a good user experience, Google recommends that sites should strive to have a First Contentful Paint value of 1.8 seconds or less.

2.541 s

1.8 s

3 s

Largest Contentful Paint Test90% of top 100 sites passed
  • The Largest Contentful Paint duration of this webpage is 4.33 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.

4.33 s

2.5 s

4 s

Largest Contentful Paint element within the viewport:
<a href="/unemployed/edu_detail.jsp?seq=146">
Cumulative Layout Shift Test94% of top 100 sites passed
  • The CLS score of this webpage is 0.0050. To provide a good user experience, Google recommends that sites should strive to have a CLS score of 0.1 or less.

0.005

0.1

0.25

DOM element which contributes the most to CLS score:
Html: <div id="visual" class="swiper-container">
Score: 0.0031
Server and security
Score: 45
Failed: 5
Warnings: 0
Passed: 5
URL Canonicalization Test97% of top 100 sites passed
SSL Checker and HTTPS Test100% of top 100 sites passed
  • This website is successfully using HTTPS, a secure communication protocol over the Internet.

The certificate is not used before the activation date.

The certificate has not expired.

The hostname "acornedu.co.kr" is correctly listed in the certificate.

The certificate should be trusted by all major web browsers.

The certificate was not revoked.

The certificate was signed with a secure hash.

Certificate Chain:
Server certificate
Common name
acornedu.co.kr
Subject Alternative Names (SANs)
acornedu.co.kr, www.acornedu.co.kr
Not valid before
Mon, September 18o 2023, 12:00:00 am (z)
Not valid after
Thu, September 19o 2024, 11:59:59 pm (z)
Signature algorithm
sha256WithRsaEncryption
Issuer
Sectigo RSA Domain Validation Secure Server CA
Intermediate certificate
Common name
Sectigo RSA Domain Validation Secure Server CA
Organization
Sectigo Limited
Location
Salford, Greater Manchester, GB
Not valid before
Fri, November 2o 2018, 12:00:00 am (z)
Not valid after
Tue, December 31o 2030, 11:59:59 pm (z)
Signature algorithm
sha384WithRsaEncryption
Issuer
USERTrust RSA Certification Authority
Root certificate
Common name
USERTrust RSA Certification Authority
Organization
The USERTRUST Network
Location
Jersey City, New Jersey, US
Not valid before
Mon, February 1o 2010, 12:00:00 am (z)
Not valid after
Mon, January 18o 2038, 11:59:59 pm (z)
Signature algorithm
sha384WithRsaEncryption
Issuer
USERTrust RSA Certification Authority
Mixed Content Test (HTTP over HTTPS)98% of top 100 sites passed
  • This webpage is using mixed content! While the initial HTML is loaded over a secure HTTPS connection, other resources (such as images, videos, stylesheets, scripts) may be loaded over an insecure HTTP connection, which may result in blocked content or unexpected page behavior.
See results list
HTTP2 Test100% of top 100 sites passed
  • This webpage is not using the HTTP/2 protocol!
HSTS Test82% of top 100 sites passed
  • This webpage is not using the Strict-Transport-Security header! This is a security header that was created as a way to force the browser to use secure connections when a site is running over HTTPS.
Safe Browsing Test100% of top 100 sites passed
  • This website is not currently listed as suspicious (no malware or phishing activity found).
Server Signature Test98% of top 100 sites passed
  • The server signature is off for this webpage.
Directory Browsing Test100% of top 100 sites passed
  • Directory browsing is disabled for this website.
Plaintext Emails Test100% of top 100 sites passed
  • This webpage does not include email addresses in plaintext.
Mobile usability
Score: 100
Failed: 0
Warnings: 0
Passed: 3
Meta Viewport Test88% of top 100 sites passed
  • This webpage is using a viewport meta tag.
<meta name="viewport" content="width=device-width, initial-scale=1" />
Media Query Responsive Test98% of top 100 sites passed
  • This webpage is using CSS media queries, which is the base for responsive design functionalities.
Mobile Snapshot Test
Mobile view
Advanced SEO
Score: 37
Failed: 2
Warnings: 1
Passed: 7
Structured Data Test53% of top 100 sites passed
Custom 404 Error Page Test67% of top 100 sites passed
  • This website is not using a custom 404 error page! Default 404 error pages result in a poor experience - it can mislead users into thinking an entire site is down or broken, greatly increases the chance they leave the website entirely, and looks unprofessional. We recommend to have a custom 404 error page in order to improve the website's user experience by letting users know that only a specific page is missing/broken (and not the entire site), providing them helpful links, the opportunity to report bugs, and potentially track the source of broken links.
Noindex Tag Test98% of top 100 sites passed
  • This webpage does not use the noindex meta tag. This means that it can be indexed by search engines.
Canonical Tag Test93% of top 100 sites passed
  • This webpage does not use the canonical link tag.
Nofollow Tag Test
  • This webpage does not use the nofollow meta tag. This means that search engines will crawl all links from this webpage.
Disallow Directive Test
  • The robots.txt file does not use the disallow directive. This means that the whole website can be crawled by search engines.
Meta Refresh Test96% of top 100 sites passed
  • This webpage is not using a meta refresh tag.
SPF Records Test95% of top 100 sites passed
  • This DNS server is using an SPF record.
v=spf1 ip4:183.111.141.100 ~all
Ads.txt Validation Test68% of top 100 sites passed
  • This website doesn't use an ads.txt file! Ads.txt is a text file that contains a list of Authorized Digital Sellers. The purpose of ads.txt files is to give advertisers and advertising networks the ability to verify who is allowed to sell advertising on your website.
Spell Check Test
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Finding and fixing misspellings on your webpage will help both user experience and search engine rankings.

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