Tools & Wizards About Us
jal.co.kr screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

jal.co.kr

일본항공(JAL) - 한국에서 출발하는 일본행 항공편

Page Load Speed

8.6 sec in total

First Response

616 ms

Resources Loaded

7.7 sec

Page Rendered

284 ms

jal.co.kr screenshot

About Website

Click here to check amazing JAL content for South Korea. Otherwise, check out these important facts you probably never knew about jal.co.kr

일본항공(JAL)으로 도쿄, 오사카 등 일본 및 아시아 목적지로 가는 항공편 및 패키지를 예약하세요. 온라인으로 예약 및 체크인을 관리할 수 있습니다.

Visit jal.co.kr

Key Findings

We analyzed Jal.co.kr page load time and found that the first response time was 616 ms and then it took 8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

jal.co.kr performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

7/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value19.7 s

0/100

10%

TBT (Total Blocking Time)

Value29,200 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value46.9 s

0/100

10%

Network Requests Diagram

jal.co.kr

616 ms

www.kr.jal.com

580 ms

1191 ms

stylesheet.jsp

311 ms

import.css

313 ms

Our browser made a total of 168 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Jal.co.kr, 90% (151 requests) were made to Kr.jal.com and 5% (8 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Kr.jal.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 103.7 kB (47%)

Content Size

221.2 kB

After Optimization

117.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jal.co.kr main page is 221.2 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. 60% of websites need less resources to load. HTML takes 104.8 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 85.8 kB

  • Original 104.8 kB
  • After minification 102.9 kB
  • After compression 19.1 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 85.8 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 1.8 kB

  • Original 74.9 kB
  • After minification 73.2 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. JAL images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 16.2 kB

  • Original 41.5 kB
  • After minification 37.8 kB
  • After compression 25.2 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 16.2 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 79 (50%)

Requests Now

157

After Optimization

78

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 157 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JAL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 37 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jal.co.kr

jal.co.kr

616 ms

www.kr.jal.com

www.kr.jal.com

580 ms

1191 ms

stylesheet.jsp

stylesheet.jsp

311 ms

import.css

import.css

313 ms

category_top.css

category_top.css

862 ms

common.js

common.js

790 ms

rollover.js

rollover.js

400 ms

domainCheck.js

domainCheck.js

623 ms

jquery.js

jquery.js

1075 ms

redirect_sp.js

redirect_sp.js

600 ms

cookieManager.js

cookieManager.js

802 ms

jmbMemberLoginFormSetup.js

jmbMemberLoginFormSetup.js

781 ms

plugin.js

plugin.js

979 ms

carouselPanelControl.js

carouselPanelControl.js

938 ms

cookieInfoBox.js

cookieInfoBox.js

990 ms

naviControlByWindowName.js

naviControlByWindowName.js

1001 ms

routeMapDispatcher.js

routeMapDispatcher.js

1034 ms

insiteSearchInput.js

insiteSearchInput.js

1093 ms

base.css

base.css

1067 ms

social.js

social.js

806 ms

serverTimeUtil.js

serverTimeUtil.js

816 ms

calendarControl.js

calendarControl.js

1000 ms

dateSelector.js

dateSelector.js

843 ms

calendarConfig.js

calendarConfig.js

863 ms

ticketModuleTab.js

ticketModuleTab.js

1006 ms

ticketModuleControlFp.js

ticketModuleControlFp.js

3366 ms

airportList2.3_en.js

airportList2.3_en.js

1318 ms

airportConf.js

airportConf.js

1016 ms

ticketmodule_Setup.js

ticketmodule_Setup.js

1204 ms

hotelModuleControl.js

hotelModuleControl.js

1204 ms

intFlightStatusControl.js

intFlightStatusControl.js

1760 ms

mainFooterControl.js

mainFooterControl.js

818 ms

rtam.js

rtam.js

1493 ms

category_top_overwrite.css

category_top_overwrite.css

702 ms

airportConf.js

airportConf.js

464 ms

bg_main.jpg

bg_main.jpg

401 ms

logo_001_new.gif

logo_001_new.gif

179 ms

txt_header.gif

txt_header.gif

210 ms

logo_oneworld_002.gif

logo_oneworld_002.gif

265 ms

icon_window_001.gif

icon_window_001.gif

353 ms

btn_header_search_001_02.gif

btn_header_search_001_02.gif

410 ms

tab_gnavi_fp_s.gif

tab_gnavi_fp_s.gif

421 ms

tab_gnavi_aj_n.gif

tab_gnavi_aj_n.gif

438 ms

icon_twitter.gif

icon_twitter.gif

539 ms

icon_facebook.gif

icon_facebook.gif

601 ms

tab_sidepane_ja_001_s.gif

tab_sidepane_ja_001_s.gif

613 ms

tab_hotel-more_n.png

tab_hotel-more_n.png

579 ms

tab_sidepane_ja_003_n.gif

tab_sidepane_ja_003_n.gif

596 ms

icon_calendar_001_n.gif

icon_calendar_001_n.gif

713 ms

btn_next_001.gif

btn_next_001.gif

736 ms

icon_jalhotels.gif

icon_jalhotels.gif

756 ms

icon_hotelscom.gif

icon_hotelscom.gif

802 ms

pic_r-booking.gif

pic_r-booking.gif

812 ms

pic_r-agoda.gif

pic_r-agoda.gif

889 ms

pic_r-hotelscom.gif

pic_r-hotelscom.gif

893 ms

pic_r-times.gif

pic_r-times.gif

913 ms

pic_r-herts.gif

pic_r-herts.gif

1003 ms

pic_r-nissan.gif

pic_r-nissan.gif

1014 ms

btn_flightinformation.gif

btn_flightinformation.gif

1064 ms

btn_main_panel_prev.gif

btn_main_panel_prev.gif

1048 ms

aor_dfw_151030.png

aor_dfw_151030.png

1528 ms

guide_to_japan_160226.png

guide_to_japan_160226.png

1403 ms

hokkaido_en_150603b.png

hokkaido_en_150603b.png

2005 ms

777_en_141027b.png

777_en_141027b.png

1366 ms

btn_main_panel_next.gif

btn_main_panel_next.gif

1249 ms

ticketmodule_Setup.js

ticketmodule_Setup.js

1427 ms

head_index_title_jal_001.gif

head_index_title_jal_001.gif

1521 ms

head_index_title_002.gif

head_index_title_002.gif

1596 ms

plusone.js

plusone.js

51 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

9 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

7 ms

fastbutton

fastbutton

62 ms

postmessageRelay

postmessageRelay

44 ms

btn_firstclass_n.jpg

btn_firstclass_n.jpg

1492 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

12 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

13 ms

3193398744-postmessagerelay.js

3193398744-postmessagerelay.js

21 ms

rpc:shindig_random.js

rpc:shindig_random.js

30 ms

btn_businessclass_n.jpg

btn_businessclass_n.jpg

1509 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

3 ms

txt_header.gif

txt_header.gif

1478 ms

btn_premiumeconomy_n.jpg

btn_premiumeconomy_n.jpg

1550 ms

btn_economyclass_n.jpg

btn_economyclass_n.jpg

1509 ms

sky_suite_awards_130624r.jpg

sky_suite_awards_130624r.jpg

1495 ms

txt_jmb_side_001.gif

txt_jmb_side_001.gif

1447 ms

btn_jmb_side_001_n.gif

btn_jmb_side_001_n.gif

1558 ms

pic_jmb_side_001.gif

pic_jmb_side_001.gif

1596 ms

txt_jmb_side_002.gif

txt_jmb_side_002.gif

1568 ms

icon_popup_p_001.gif

icon_popup_p_001.gif

1466 ms

head_sidetitle_001.gif

head_sidetitle_001.gif

1563 ms

btn_reserve_003_n.gif

btn_reserve_003_n.gif

1566 ms

btn_reserve_004_n.gif

btn_reserve_004_n.gif

1563 ms

banner_home_7526_2.jpg

banner_home_7526_2.jpg

1600 ms

banner_home_4420_1.jpg

banner_home_4420_1.jpg

1506 ms

banner_home_3829_1.jpg

banner_home_3829_1.jpg

1585 ms

head_sidetitle_002.gif

head_sidetitle_002.gif

1566 ms

pic_side_pic_01.jpg

pic_side_pic_01.jpg

1519 ms

pic_side_pic_03.jpg

pic_side_pic_03.jpg

1555 ms

pic_side_icon_hotels.gif

pic_side_icon_hotels.gif

1521 ms

icon_popup_p_003.gif

icon_popup_p_003.gif

1525 ms

txt_footer_copy_001.gif

txt_footer_copy_001.gif

1582 ms

bg_header_003.gif

bg_header_003.gif

1474 ms

parts_arr_r_001.gif

parts_arr_r_001.gif

1461 ms

txt_search_bg_001.gif

txt_search_bg_001.gif

1521 ms

tab_gnavi_jmb_n.gif

tab_gnavi_jmb_n.gif

1547 ms

tab_gnavi_gj_n.gif

tab_gnavi_gj_n.gif

1369 ms

bg_ticket_top.png

bg_ticket_top.png

1266 ms

bg_ticket_bottom.png

bg_ticket_bottom.png

1228 ms

bg_ticket_middle.gif

bg_ticket_middle.gif

1241 ms

bg_base_line_001.gif

bg_base_line_001.gif

578 ms

icon_popup_p_001.gif

icon_popup_p_001.gif

620 ms

bg_section_top.gif

bg_section_top.gif

620 ms

bg_section_base_top_001.png

bg_section_base_top_001.png

591 ms

txt_index_info.gif

txt_index_info.gif

587 ms

bg_section_bottom.gif

bg_section_bottom.gif

646 ms

bg_section_bottom_b.png

bg_section_bottom_b.png

771 ms

bg_base_line_003.gif

bg_base_line_003.gif

749 ms

airline_awards_en_590_120.jpg

airline_awards_en_590_120.jpg

751 ms

bg_side_login_bottom.png

bg_side_login_bottom.png

805 ms

bg_side_login_top.png

bg_side_login_top.png

813 ms

bg_side_jmb_setentry_bottom.gif

bg_side_jmb_setentry_bottom.gif

818 ms

bg_side_jmb_setentry_top.gif

bg_side_jmb_setentry_top.gif

900 ms

bg_section_side_bottom_002.png

bg_section_side_bottom_002.png

905 ms

bnr300_75en.jpg

bnr300_75en.jpg

1359 ms

bg_base_line_002.gif

bg_base_line_002.gif

1001 ms

bg_section_top_02.gif

bg_section_top_02.gif

1009 ms

pic_side_pic_02.jpg

pic_side_pic_02.jpg

988 ms

icon_arrowtop_001.gif

icon_arrowtop_001.gif

1048 ms

bg_tail_footer_004.gif

bg_tail_footer_004.gif

1052 ms

bg_tail_footer_navi-line.gif

bg_tail_footer_navi-line.gif

1160 ms

rtam.gif

rtam.gif

167 ms

gtm.js

gtm.js

14 ms

ga.js

ga.js

7 ms

__utm.gif

__utm.gif

13 ms

icon_triangle_003.gif

icon_triangle_003.gif

1097 ms

bg_footerarea_last_bottom.gif

bg_footerarea_last_bottom.gif

1103 ms

bg_footerarea_last_top.gif

bg_footerarea_last_top.gif

1101 ms

bg_tail_footer_002.gif

bg_tail_footer_002.gif

1060 ms

bg_tail_footer_003.gif

bg_tail_footer_003.gif

1145 ms

btn_main_panel_nav_01_n.gif

btn_main_panel_nav_01_n.gif

1201 ms

btn_main_panel_nav_02_n.gif

btn_main_panel_nav_02_n.gif

1103 ms

btn_main_panel_nav_03_n.gif

btn_main_panel_nav_03_n.gif

1148 ms

btn_main_panel_nav_04_n.gif

btn_main_panel_nav_04_n.gif

1090 ms

tab_gnavi_jmb_o.gif

tab_gnavi_jmb_o.gif

203 ms

tab_gnavi_gj_o.gif

tab_gnavi_gj_o.gif

204 ms

tab_gnavi_aj_o.gif

tab_gnavi_aj_o.gif

158 ms

btn_firstclass_o.jpg

btn_firstclass_o.jpg

181 ms

btn_businessclass_o.jpg

btn_businessclass_o.jpg

402 ms

btn_premiumeconomy_o.jpg

btn_premiumeconomy_o.jpg

163 ms

btn_economyclass_o.jpg

btn_economyclass_o.jpg

318 ms

btn_reserve_003_o.gif

btn_reserve_003_o.gif

322 ms

btn_reserve_004_o.gif

btn_reserve_004_o.gif

357 ms

tab_sidepane_ja_001_n.gif

tab_sidepane_ja_001_n.gif

403 ms

tab_sidepane_ja_001_o.gif

tab_sidepane_ja_001_o.gif

404 ms

tab_hotel-more_o.png

tab_hotel-more_o.png

476 ms

tab_hotel-more_s.png

tab_hotel-more_s.png

479 ms

tab_sidepane_ja_003_o.gif

tab_sidepane_ja_003_o.gif

532 ms

tab_sidepane_ja_003_s.gif

tab_sidepane_ja_003_s.gif

603 ms

bg_ticket_top2.png

bg_ticket_top2.png

617 ms

bg_ticket_top2.gif

bg_ticket_top2.gif

620 ms

bg_ticket_middle2.gif

bg_ticket_middle2.gif

651 ms

bg_ticket_bottom2.png

bg_ticket_bottom2.png

649 ms

bg_ticket_bottom2.gif

bg_ticket_bottom2.gif

726 ms

btn_next_001.gif

btn_next_001.gif

803 ms

btn_flightinformation.gif

btn_flightinformation.gif

820 ms

txt_jmb_side_003.gif

txt_jmb_side_003.gif

823 ms

txt_jmb_side_004.gif

txt_jmb_side_004.gif

814 ms

Accessibility Review

jal.co.kr accessibility score

72

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

[role]s are not contained by their required parent element

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

jal.co.kr best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

jal.co.kr SEO score

69

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

High

Document doesn't have a valid hreflang

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    KO

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jal.co.kr can be misinterpreted by Google and other search engines. Our service has detected that Korean is used on the page, and it does not match the claimed English language. Our system also found out that Jal.co.kr 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

jal.co.kr

Open Graph description is not detected on the main page of JAL. 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: