3.2 sec in total
1 sec
2 sec
180 ms
Click here to check amazing Jabble content. Otherwise, check out these important facts you probably never knew about jabble.jp
ネイティブ講師と会話中心のレッスンで室の高い英語が学べる英会話スクール・ジャブル Jabble。グループ・マンツーマンでの対面レッスンはもちろん、オンラインレッスンも。ターミナル駅(お茶の水・武蔵小杉・船橋・千葉)から徒歩4分圏内のアクセスのよさも通いやすい英会話教室です。
Visit jabble.jpWe analyzed Jabble.jp page load time and found that the first response time was 1 sec and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
jabble.jp performance score
name
value
score
weighting
Value6.0 s
3/100
10%
Value6.5 s
9/100
25%
Value15.6 s
0/100
10%
Value12,680 ms
0/100
30%
Value0
100/100
15%
Value24.1 s
0/100
10%
1030 ms
7 ms
9 ms
11 ms
13 ms
Our browser made a total of 88 requests to load all elements on the main page. We found that 93% of them (82 requests) were addressed to the original Jabble.jp, 3% (3 requests) were made to Google-analytics.com and 1% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Jabble.jp.
Page size can be reduced by 113.7 kB (31%)
362.2 kB
248.5 kB
In fact, the total size of Jabble.jp main page is 362.2 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. 45% of websites need less resources to load. Images take 218.4 kB which makes up the majority of the site volume.
Potential reduce by 29.4 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. This page needs HTML code to be minified as it can gain 4.6 kB, which is 13% 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 29.4 kB or 80% of the original size.
Potential reduce by 5.4 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. Jabble images are well optimized though.
Potential reduce by 49.4 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 49.4 kB or 66% of the original size.
Potential reduce by 29.5 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. Jabble.jp needs all CSS files to be minified and compressed as it can save up to 29.5 kB or 91% of the original size.
Number of requests can be reduced by 34 (40%)
84
50
The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jabble. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
jabble.jp
1030 ms
jabblestyle.css
7 ms
flexslider.css
9 ms
ddtabmenu.js
11 ms
solidblocksmenu.css
13 ms
jquery.min.js
39 ms
jquery.flexslider.js
26 ms
bg.gif
25 ms
Count.cgi
205 ms
logo.gif
11 ms
real-english.gif
10 ms
days-times.gif
10 ms
home_o.gif
9 ms
lessoninfo_o.gif
11 ms
aboutus_o.gif
11 ms
studentvoice_o.gif
14 ms
event_o.gif
12 ms
access_o.gif
12 ms
contactus_o.gif
12 ms
campaign.gif
14 ms
quiz.gif
14 ms
mission.gif
16 ms
student-voice.jpg
30 ms
act-now.gif
14 ms
facebook.gif
16 ms
goal.gif
15 ms
tab-button.gif
15 ms
menu-top-self.png
16 ms
menu-top-world.png
43 ms
menu-top-pro.png
31 ms
menu-top-future.png
35 ms
menu-top-fun.png
33 ms
menu-go.gif
32 ms
front-self-improve.jpg
36 ms
front-world.jpg
42 ms
front-professional.jpg
36 ms
front-future.jpg
41 ms
front-fun.jpg
40 ms
bigbutton-lesson.gif
41 ms
bigbutton-studentvoice.gif
43 ms
bigbutton-event.gif
48 ms
chibanippo_small.gif
46 ms
asahishinbun_small.gif
43 ms
photo-album.jpg
43 ms
business_outside.gif
42 ms
demolesson-new.gif
42 ms
myjabble-button.gif
46 ms
follow-us.gif
43 ms
facebook-button.gif
42 ms
twitter-button.gif
43 ms
soundcloud-button.gif
41 ms
tumblr-button.gif
42 ms
plusalpha-button.gif
42 ms
iblogsarrow.gif
42 ms
office.jpg
42 ms
newsbar.gif
42 ms
web-quiz.gif
41 ms
i-blog-button.gif
40 ms
new-staff.gif
40 ms
new-teacher.gif
41 ms
pagefooter_home.gif
41 ms
pagefooter_lessoninfo.gif
41 ms
ga.js
29 ms
pagefooter_aboutus.gif
29 ms
pagefooter_event.gif
62 ms
pagefooter_access.gif
60 ms
pagefooter_information.gif
60 ms
__utm.gif
14 ms
collect
70 ms
access_w.gif
42 ms
__utm.gif
13 ms
aboutus_w.gif
5 ms
home_w.gif
4 ms
lessoninfo_w.gif
5 ms
event_w.gif
5 ms
contactus_w.gif
5 ms
news_w.gif
6 ms
bigbutton_lessoninfo_d.gif
5 ms
bigbutton_studentvoice_d.gif
6 ms
bigbutton_event_d.gif
7 ms
demolesson-new2.gif
7 ms
studentvoice_w.gif
8 ms
bigbutton-lesson-d.gif
8 ms
bigbutton-studentvoice-d.gif
7 ms
bigbutton-event-d.gif
8 ms
index-u.html
718 ms
tab-button2.gif
7 ms
flexslider-icon.woff
8 ms
jabble.jp accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
jabble.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
jabble.jp SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
JA
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jabble.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 Jabble.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.
jabble.jp
Open Graph description is not detected on the main page of Jabble. 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: