Tools & Wizards About Us
starflyer.jp screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

starflyer.jp

【公式】スターフライヤー（SFJ）国内線 | 航空券予約・空席照会・運賃案内

Page Load Speed

11.3 sec in total

First Response

569 ms

Resources Loaded

9.9 sec

Page Rendered

803 ms

starflyer.jp screenshot

About Website

Welcome to starflyer.jp homepage info - get ready to check Starflyer best content for Japan right away, or after learning these important things about starflyer.jp

国内線の航空券予約から購入、運賃や空席照会ならスターフライヤー（SFJ）。ツアー内容を自由に組み合わせ可能なダイナミックパッケージも提供。スターフライヤーは全便・全席レザーシート&座席が広く、全席電源付！キャンペーンやマイレージのご案内などでプレミアムでリーズナブルな空の旅をお届けします。

Visit starflyer.jp

Key Findings

We analyzed Starflyer.jp page load time and found that the first response time was 569 ms and then it took 10.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

starflyer.jp performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value15.6 s

0/100

25%

SI (Speed Index)

Value17.6 s

0/100

10%

TBT (Total Blocking Time)

Value1,010 ms

27/100

30%

CLS (Cumulative Layout Shift)

Value0.21

59/100

15%

TTI (Time to Interactive)

Value37.6 s

0/100

10%

Network Requests Diagram

starflyer.jp

569 ms

www.starflyer.jp

516 ms

shared.css

18 ms

dp.css

40 ms

module.tour.css

43 ms

Our browser made a total of 176 requests to load all elements on the main page. We found that 60% of them (106 requests) were addressed to the original Starflyer.jp, 3% (6 requests) were made to Tracer31.a-cast.jp and 2% (3 requests) were made to Tg.socdm.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Starflyer.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 MB (27%)

Content Size

8.1 MB

After Optimization

5.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Starflyer.jp main page is 8.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 92.8 kB

  • Original 116.2 kB
  • After minification 108.9 kB
  • After compression 23.4 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 92.8 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 15.5 kB

  • Original 5.4 MB
  • After minification 5.4 MB

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. Starflyer images are well optimized though.

JavaScript Optimization

-79%

Potential reduce by 1.5 MB

  • Original 2.0 MB
  • After minification 1.7 MB
  • After compression 410.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 1.5 MB or 79% of the original size.

CSS Optimization

-89%

Potential reduce by 547.5 kB

  • Original 616.4 kB
  • After minification 463.9 kB
  • After compression 68.9 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. Starflyer.jp needs all CSS files to be minified and compressed as it can save up to 547.5 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 105 (62%)

Requests Now

169

After Optimization

64

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 169 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Starflyer. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 65 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

starflyer.jp

starflyer.jp

569 ms

www.starflyer.jp

www.starflyer.jp

516 ms

shared.css

shared.css

18 ms

dp.css

dp.css

40 ms

module.tour.css

module.tour.css

43 ms

dp_module.css

dp_module.css

41 ms

flywithpet_popup.css

flywithpet_popup.css

40 ms

layout_pc.css

layout_pc.css

32 ms

top_pc.css

top_pc.css

36 ms

modal.css

modal.css

39 ms

_a_cast.js

_a_cast.js

218 ms

ppz_pc.js

ppz_pc.js

761 ms

ppz_draw_contents_pc.js

ppz_draw_contents_pc.js

573 ms

clicktag.js

clicktag.js

803 ms

dpmodule.js

dpmodule.js

1798 ms

jquery.js

jquery.js

2238 ms

slick.js

slick.js

433 ms

jquery.cookie.js

jquery.cookie.js

1924 ms

time.cgi

time.cgi

756 ms

app.js

app.js

1513 ms

dp.js

dp.js

955 ms

dp_event.js

dp_event.js

1017 ms

jquery-modalLayerBoard.js

jquery-modalLayerBoard.js

1164 ms

modal.js

modal.js

1214 ms

acSmartPhoneCheck.js

acSmartPhoneCheck.js

1389 ms

ppz_clip.js

ppz_clip.js

1455 ms

logo_site_l.svg

logo_site_l.svg

660 ms

logo_site_s.svg

logo_site_s.svg

695 ms

img_drop_inboard_01.jpg

img_drop_inboard_01.jpg

683 ms

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img_drop_inboard_02_210326.jpg

693 ms

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704 ms

icn_sprite.svg

icn_sprite.svg

748 ms

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728 ms

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719 ms

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743 ms

icn_rentacar.svg

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785 ms

icn_hotel.svg

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787 ms

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787 ms

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791 ms

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790 ms

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791 ms

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791 ms

dp_recommende_hotel_banner.jpg

dp_recommende_hotel_banner.jpg

792 ms

btn_app.png

btn_app.png

803 ms

btn_gp.png

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794 ms

;referer=;rand=1254996393327;https:;customer_id=;ac_del=&ac_ck=&adsvr_ck=

;referer=;rand=1254996393327;https:;customer_id=;ac_del=&ac_ck=&adsvr_ck=

870 ms

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35 ms

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12 ms

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33 ms

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30 ms

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46 ms

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74 ms

icn_sprite.svg

icn_sprite.svg

54 ms

;referer=;rand=1501959155688;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTcxOjMxMDQ3MDAwMjoxLCwsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzE6MzEwNDcwMDAyOjI6LCwsLCwsLCwsLCwsLCwsLCwsLCoqKmFzZWdfaW1wfDEqKipsc2VnfDEqKipsX2ltcF9yfDIqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9KioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

;referer=;rand=1501959155688;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTcxOjMxMDQ3MDAwMjoxLCwsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzE6MzEwNDcwMDAyOjI6LCwsLCwsLCwsLCwsLCwsLCwsLCoqKmFzZWdfaW1wfDEqKipsc2VnfDEqKipsX2ltcF9yfDIqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9KioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

522 ms

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19 ms

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107 ms

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38 ms

;referer=;rand=557367708364;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTcyOjMxMDQ3MDAwMzoxLDE3MTozMTA0NzAwMDI6MSwsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzI6MzEwNDcwMDAzOjIwOnJob3N0PXxrZXl3b3JkPXxhZGlkPXxyZWFzb249dmlzaXQtMSwxNzE6MzEwNDcwMDAyOjI6LCwsLCwsLCwsLCwsLCwsLCwsKioqYXNlZ19pbXB8MSoqKmxzZWd8MSoqKmxfaW1wX3J8MjAqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9fHJlYXNvbj12aXNpdC0xKioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

;referer=;rand=557367708364;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTcyOjMxMDQ3MDAwMzoxLDE3MTozMTA0NzAwMDI6MSwsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzI6MzEwNDcwMDAzOjIwOnJob3N0PXxrZXl3b3JkPXxhZGlkPXxyZWFzb249dmlzaXQtMSwxNzE6MzEwNDcwMDAyOjI6LCwsLCwsLCwsLCwsLCwsLCwsKioqYXNlZ19pbXB8MSoqKmxzZWd8MSoqKmxfaW1wX3J8MjAqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9fHJlYXNvbj12aXNpdC0xKioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

523 ms

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bnr_fare_202405_kkj_fuk.jpg

131 ms

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30 ms

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img_fare_02.jpg

57 ms

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59 ms

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70 ms

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img_fare_05.jpg

48 ms

;referer=;rand=862618143445;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTczOjMxMDQ3MDAxNjoxLDE3MjozMTA0NzAwMDM6MSwxNzE6MzEwNDcwMDAyOjEsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzM6MzEwNDcwMDE2OjI6LDE3MjozMTA0NzAwMDM6MjA6cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9fHJlYXNvbj12aXNpdC0xLDE3MTozMTA0NzAwMDI6MjosLCwsLCwsLCwsLCwsLCwsLCoqKmFzZWdfaW1wfDEqKipsc2VnfDEqKipsX2ltcF9yfDIqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9KioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

;referer=;rand=862618143445;https:;customer_id=;ac_del=&ac_ck=17149484166750&adsvr_ck=bGF8MTcxNDk0ODQxNjY3NSoqKnZhfDEqKipzc3wwKioqZnF8MTczOjMxMDQ3MDAxNjoxLDE3MjozMTA0NzAwMDM6MSwxNzE6MzEwNDcwMDAyOjEsLCwsLCwsLCwsLCwsLCwsLCoqKm5jcnwxNzM6MzEwNDcwMDE2OjI6LDE3MjozMTA0NzAwMDM6MjA6cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9fHJlYXNvbj12aXNpdC0xLDE3MTozMTA0NzAwMDI6MjosLCwsLCwsLCwsLCwsLCwsLCoqKmFzZWdfaW1wfDEqKipsc2VnfDEqKipsX2ltcF9yfDIqKipsX2ltcF9vcHR8cmhvc3Q9fGtleXdvcmQ9fGFkaWQ9KioqbF9pbXBfY2lkfDMxMDQ3KioqbF9pbXBfZnx5KioqRU9GKioq

521 ms

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56 ms

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52 ms

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54 ms

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53 ms

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50 ms

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bnr_tr_bunkazai.jpg

51 ms

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47 ms

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47 ms

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bg_aside_nav_04.jpg

48 ms

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bg_aside_nav_05.jpg

47 ms

bg_aside_nav_02.jpg

bg_aside_nav_02.jpg

45 ms

bg_footer_pc.jpg

bg_footer_pc.jpg

32 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

631 ms

underscore-min.js

underscore-min.js

206 ms

tour_module_numberOfPeopleParts.js

tour_module_numberOfPeopleParts.js

222 ms

tour_module_popupCalendar.js

tour_module_popupCalendar.js

236 ms

tour_module_airportListParts.js

tour_module_airportListParts.js

765 ms

tour_module_suggest.js

tour_module_suggest.js

415 ms

tour_airport_list_JA.js

tour_airport_list_JA.js

678 ms

inttour_tourName_json_JA.js

inttour_tourName_json_JA.js

439 ms

tour_module_list_JA.js

tour_module_list_JA.js

501 ms

inttour_module_list_JA.js

inttour_module_list_JA.js

676 ms

domtour_module_list_JA.js

domtour_module_list_JA.js

677 ms

domtour2nd_module_list_JA.js

domtour2nd_module_list_JA.js

725 ms

tour_module_common.js

tour_module_common.js

824 ms

inttour_module_common.js

inttour_module_common.js

828 ms

domtour_module_common.js

domtour_module_common.js

881 ms

tour2nd_module_common.js

tour2nd_module_common.js

849 ms

tour2nd_module_main.js

tour2nd_module_main.js

1142 ms

tour2nd_module_tab.js

tour2nd_module_tab.js

958 ms

domtour2nd_module_tab.js

domtour2nd_module_tab.js

1019 ms

domtour2nd_module_dp.js

domtour2nd_module_dp.js

1721 ms

domtour2nd_module_pkg.js

domtour2nd_module_pkg.js

1076 ms

domtour2nd_module_hotel.js

domtour2nd_module_hotel.js

1141 ms

domtour2nd_module_hotel_bulk.js

domtour2nd_module_hotel_bulk.js

1157 ms

domtour2nd_module_car.js

domtour2nd_module_car.js

1217 ms

domtour2nd_module_traffic.js

domtour2nd_module_traffic.js

1260 ms

domtour2nd_module_bulk.js

domtour2nd_module_bulk.js

1352 ms

entry.js

entry.js

669 ms

gtm.js

gtm.js

116 ms

ico_form_calendar.png

ico_form_calendar.png

21 ms

ico_checkbox.png

ico_checkbox.png

11 ms

js

js

66 ms

analytics.js

analytics.js

37 ms

3634028c-7506-4c66-aae5-f044dc62d2ef.js

3634028c-7506-4c66-aae5-f044dc62d2ef.js

56 ms

ytag.js

ytag.js

870 ms

s_retargeting.js

s_retargeting.js

831 ms

seg.js

seg.js

811 ms

so_sg.js

so_sg.js

1018 ms

fbevents.js

fbevents.js

51 ms

segmentation.js

segmentation.js

330 ms

7ydnvnfvo7.js

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1230 ms

conversion.js

conversion.js

311 ms

mone.025a52d9d7a_3240.js

mone.025a52d9d7a_3240.js

736 ms

uwt.js

uwt.js

252 ms

collect

collect

271 ms

adsct

adsct

123 ms

adsct

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collect

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50 ms

cnt

cnt

711 ms

cnt

cnt

798 ms

oct.js

oct.js

7 ms

actag

actag

514 ms

tracking.min.js

tracking.min.js

19 ms

im-uid.js

im-uid.js

27 ms

pixel.js

pixel.js

37 ms

get

get

169 ms

js

js

669 ms

adsct

adsct

102 ms

adsct

adsct

24 ms

35 ms

34 ms

pixel

pixel

169 ms

sosync

sosync

171 ms

iframe

iframe

200 ms

conversion.js

conversion.js

186 ms

34 ms

v2

v2

31 ms

sync

sync

709 ms

sync

sync

59 ms

26 ms

conversion_async.js

conversion_async.js

1517 ms

Pug

Pug

99 ms

hs

hs

851 ms

sync.ad-stir.com

sync.ad-stir.com

680 ms

tap.php

tap.php

91 ms

99 ms

cookiesync

cookiesync

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cs

cs

757 ms

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266 ms

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92 ms

pixel

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57 ms

google

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194 ms

bounce

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11 ms

sd

sd

5 ms

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14 ms

sync

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15 ms

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780 ms

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11 ms

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294 ms

Pug

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6 ms

hs

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416 ms

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34 ms

tap.php

tap.php

5 ms

Accessibility Review

starflyer.jp accessibility score

66

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

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

Links do not have a discernible name

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.

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

starflyer.jp 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

Page has valid source maps

SEO Factors

starflyer.jp SEO score

82

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Starflyer.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Starflyer.jp 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

starflyer.jp

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