Tools & Wizards About Us
jksaa.org screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jksaa.org

한국항공운항학회지(Journal of the Korean Society for Aviation and Aeronautics)

Page Load Speed

4.2 sec in total

First Response

361 ms

Resources Loaded

3.6 sec

Page Rendered

228 ms

jksaa.org screenshot

About Website

Click here to check amazing Jksaa content. Otherwise, check out these important facts you probably never knew about jksaa.org

한국항공운항학회지(Journal of the Korean Society for Aviation and Aeronautics)

Visit jksaa.org

Key Findings

We analyzed Jksaa.org page load time and found that the first response time was 361 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

jksaa.org performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.8 s

1/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value7.7 s

25/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.058

98/100

15%

TTI (Time to Interactive)

Value8.1 s

41/100

10%

Network Requests Diagram

jksaa.org

361 ms

www.jksaa.org

390 ms

www.jksaa.org

815 ms

bootstrap.css

183 ms

jquery-ui.css

47 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 61% of them (27 requests) were addressed to the original Jksaa.org, 11% (5 requests) were made to Fonts.gstatic.com and 9% (4 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Jksaa.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 72.8 kB (18%)

Content Size

398.4 kB

After Optimization

325.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jksaa.org main page is 398.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Images take 174.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 20.5 kB

  • Original 26.4 kB
  • After minification 19.6 kB
  • After compression 5.9 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 6.7 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 20.5 kB or 78% of the original size.

Image Optimization

-23%

Potential reduce by 40.4 kB

  • Original 174.9 kB
  • After minification 134.5 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Jksaa needs image optimization as it can save up to 40.4 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-6%

Potential reduce by 9.0 kB

  • Original 160.4 kB
  • After minification 160.4 kB
  • After compression 151.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-8%

Potential reduce by 3.0 kB

  • Original 36.7 kB
  • After minification 36.7 kB
  • After compression 33.7 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Jksaa.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (49%)

Requests Now

35

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jksaa. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jksaa.org

jksaa.org

361 ms

www.jksaa.org

www.jksaa.org

390 ms

www.jksaa.org

www.jksaa.org

815 ms

bootstrap.css

bootstrap.css

183 ms

jquery-ui.css

jquery-ui.css

47 ms

magnific-popup.css

magnific-popup.css

361 ms

jquery.min.js

jquery.min.js

52 ms

jquery.cookie.js

jquery.cookie.js

534 ms

jquery.magnific-popup.js

jquery.magnific-popup.js

536 ms

bootstrap.js

bootstrap.js

538 ms

jquery-ui.min.js

jquery-ui.min.js

53 ms

7823f8b36e.js

7823f8b36e.js

69 ms

jquery.bxslider.css

jquery.bxslider.css

555 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

555 ms

js_common.js

js_common.js

555 ms

default.css

default.css

710 ms

element.js

element.js

72 ms

widget-popup.js

widget-popup.js

48 ms

7823f8b36e.css

7823f8b36e.css

11 ms

font-awesome-css.min.css

font-awesome-css.min.css

13 ms

nanumgothic.css

nanumgothic.css

32 ms

nanumpenscript.css

nanumpenscript.css

46 ms

top_logo.png

top_logo.png

182 ms

502 ms

cover_big.jpg

cover_big.jpg

705 ms

bnr_ksaa.jpg

bnr_ksaa.jpg

366 ms

bnr_crossref.gif

bnr_crossref.gif

177 ms

bnr_sited_by.gif

bnr_sited_by.gif

178 ms

bnr_similarity.gif

bnr_similarity.gif

177 ms

bnr_kofst.gif

bnr_kofst.gif

347 ms

orcid_logo.gif

orcid_logo.gif

353 ms

google_scholar_logo.gif

google_scholar_logo.gif

353 ms

jksaa-32-3-15-g1.gif

jksaa-32-3-15-g1.gif

1238 ms

jksaa-32-3-1-g1.gif

jksaa-32-3-1-g1.gif

701 ms

jksaa-32-3-147-g1.gif

jksaa-32-3-147-g1.gif

706 ms

jksaa-29-1-74-g1.gif

jksaa-29-1-74-g1.gif

1061 ms

jksaa-29-3-52-g1.gif

jksaa-29-3-52-g1.gif

1095 ms

jksaa-29-4-124-g1.gif

jksaa-29-4-124-g1.gif

1054 ms

PN_3Rfi-oW3hYwmKDpxS7F_D-djY.woff

PN_3Rfi-oW3hYwmKDpxS7F_D-djY.woff

79 ms

PN_oRfi-oW3hYwmKDpxS7F_LQv3LyVsg.woff

PN_oRfi-oW3hYwmKDpxS7F_LQv3LyVsg.woff

80 ms

PN_oRfi-oW3hYwmKDpxS7F_LXv7LyVsg.woff

PN_oRfi-oW3hYwmKDpxS7F_LXv7LyVsg.woff

79 ms

mem8YaGs126MiZpBA-UFVZ0e.ttf

mem8YaGs126MiZpBA-UFVZ0e.ttf

61 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

62 ms

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

90 ms

Accessibility Review

jksaa.org accessibility score

67

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

jksaa.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

jksaa.org SEO score

92

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jksaa.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Jksaa.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

jksaa.org

Open Graph description is not detected on the main page of Jksaa. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: