8.8 sec in total
543 ms
7.8 sec
420 ms
Visit alc.co.jp now to see the best up-to-date Alc content for Japan and also check out these interesting facts you probably never knew about alc.co.jp
英語・子供英語・日本語の通信講座や学習書、オンラインサービスを提供するアルクのウェブサイト。あなたのレベルや目的に合った語学学習教材がきっと見つかります。英辞郎 on the WEBやTOEICなどの無料コンテンツも充実。
Visit alc.co.jpWe analyzed Alc.co.jp page load time and found that the first response time was 543 ms and then it took 8.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
alc.co.jp performance score
name
value
score
weighting
Value5.4 s
6/100
10%
Value15.9 s
0/100
25%
Value13.3 s
2/100
10%
Value2,730 ms
3/100
30%
Value1.629
0/100
15%
Value22.1 s
1/100
10%
543 ms
1178 ms
342 ms
1013 ms
511 ms
Our browser made a total of 131 requests to load all elements on the main page. We found that 35% of them (46 requests) were addressed to the original Alc.co.jp, 18% (23 requests) were made to Cdn2.alc.co.jp and 8% (11 requests) were made to Ds.advg.jp. The less responsive or slowest element that took the longest time to load (4.6 sec) relates to the external source Cdn2.alc.co.jp.
Page size can be reduced by 1.9 MB (41%)
4.6 MB
2.7 MB
In fact, the total size of Alc.co.jp main page is 4.6 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. 55% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.
Potential reduce by 68.1 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 68.1 kB or 78% of the original size.
Potential reduce by 196.5 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. Alc images are well optimized though.
Potential reduce by 1.1 MB
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 1.1 MB or 70% of the original size.
Potential reduce by 547.9 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. Alc.co.jp needs all CSS files to be minified and compressed as it can save up to 547.9 kB or 86% of the original size.
Number of requests can be reduced by 63 (50%)
126
63
The browser has sent 126 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
alc.co.jp
543 ms
www.alc.co.jp
1178 ms
master.css
342 ms
jquery.js
1013 ms
jq-lib.js
511 ms
jquery.cookie.js
350 ms
shadowbox.js
1060 ms
shadowboxini.js
511 ms
2377490309.js
27 ms
eow_compressed.js
525 ms
pjs.js
532 ms
layout.css
675 ms
parts.css
1183 ms
module.css
710 ms
helper.css
859 ms
local_nav_module.css
843 ms
layout2.css
846 ms
user_1.css
886 ms
extr_1.css
1072 ms
extr_2.css
1014 ms
base_1.css
1019 ms
shadowbox.css
1036 ms
gmogs_image_100-50_ja.js
9 ms
conversion.js
17 ms
s_retargeting.js
558 ms
jquery.flatheights.js
181 ms
event
11 ms
tooltips.css
181 ms
tooltip.js
174 ms
head_search.gif
2053 ms
head_logo2_53rev.gif
175 ms
gs_noscript_100-50_ja.gif
12 ms
lb
22 ms
bnr_top_clsale1602_2.jpg
2672 ms
bnr_top_h4renew1602ver2.jpg
2674 ms
bnr_top_jpngoukaku1602.gif
2551 ms
bnr_top_alccollege1602.jpg
2611 ms
bnr_top_newtoeic1601.jpg
2799 ms
bnr_top_clsale1602_thumb.jpg
2198 ms
bnr_top_h4renew1602ver2_thumb.jpg
2351 ms
bnr_top_jpngoukaku1602_thumb.gif
2503 ms
bnr_top_alccollege1602rev_thumb.jpg
2654 ms
bnr_top_newtoeic1601_thumb.jpg
2713 ms
title_img_info2.jpg
2785 ms
bnr_top_newtoeic_info.jpg
3260 ms
icon110_toeicer2.jpg
2823 ms
icon_up.jpg
2835 ms
icon110_upblog.jpg
2874 ms
icon110_kihon.jpg
2957 ms
icon110_kisetsu.jpg
2973 ms
bnr300_clubalc.jpg
2976 ms
bnr_top_saiyo_b.jpg
2988 ms
bnr_top_right_ejad_a.gif
3034 ms
foot_search.gif
3131 ms
arrow-left.jpg
192 ms
arrow-right.jpg
191 ms
sttl-topnews.gif
190 ms
snavttl-ranking.gif
333 ms
itemimg-thumb-autox60-45277.jpg
334 ms
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348 ms
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347 ms
itemimg-thumb-autox60-61409.jpg
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itemimg-thumb-autox60-69486.jpg
362 ms
icon_arrow_blue.jpg
503 ms
banner-begginer-alc-thumb-300xauto-68737.jpg
504 ms
sidebar-img-privacy-mark.jpg
517 ms
sidebar-img-j-dma.jpg
531 ms
head_bg.jpg
364 ms
sprite.png
4564 ms
js
335 ms
slide_bg.gif
174 ms
js
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160222_navi_350-70.gif
560 ms
js
356 ms
icon_pr.jpg
183 ms
bg_h2title.gif
176 ms
box-ftricon.gif
175 ms
js
350 ms
js
497 ms
js
333 ms
js
329 ms
compass.js
16 ms
cookie_enabled_get_apac.html
344 ms
160229_ILC_BD.gif
183 ms
js
354 ms
ad
521 ms
150413_navi.gif
178 ms
js
368 ms
14032.js
7 ms
ic
359 ms
sync
18 ms
352380-2.js
74 ms
jstag
11 ms
emily.html
11 ms
clm_ncc.gif
399 ms
140701_eizou-100-75-2.gif
344 ms
emily.html
8 ms
js
309 ms
tap.php
5 ms
acj
25 ms
show_ads.js
7 ms
ri
6 ms
ca-pub-1322237718032870.js
33 ms
zrt_lookup.html
30 ms
show_ads_impl.js
57 ms
ads
135 ms
osd.js
3 ms
ad
516 ms
sidebar-btn_bg.gif
183 ms
foot_logo.gif
175 ms
52 ms
segmentation.js
48 ms
DIGITALICE_REC.js
508 ms
TkN2F.lW2gpD
327 ms
gtm.js
32 ms
pta.js
517 ms
siteSeal.do
550 ms
icon_blank.gif
177 ms
slide_act.png
185 ms
analytics.js
10 ms
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cnt
374 ms
pixel
18 ms
collect
4 ms
collect
66 ms
47 ms
hs=1456745349657
480 ms
ic
357 ms
343 ms
55a4a759.js
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siteSealImage.do
183 ms
alc.co.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.
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
alc.co.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
Browser errors were logged to the console
Page has valid source maps
alc.co.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
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alc.co.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 Alc.co.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.
alc.co.jp
Open Graph data is detected on the main page of Alc. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: