5.3 sec in total
1 sec
3.9 sec
375 ms
Click here to check amazing Chikahaku content for Japan. Otherwise, check out these important facts you probably never knew about chikahaku.jp
地下鉄博物館(ちかはく)は、地下鉄の歴史から最新技術まで『みて・ふれて・動かして』学習できる参加型ミュージアムです。
Visit chikahaku.jpWe analyzed Chikahaku.jp page load time and found that the first response time was 1 sec and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
chikahaku.jp performance score
name
value
score
weighting
Value3.0 s
49/100
10%
Value8.6 s
1/100
25%
Value14.1 s
1/100
10%
Value230 ms
86/100
30%
Value0.201
62/100
15%
Value12.7 s
13/100
10%
1038 ms
552 ms
906 ms
569 ms
407 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that 90% of them (43 requests) were addressed to the original Chikahaku.jp, 4% (2 requests) were made to Gstatic.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Chikahaku.jp.
Page size can be reduced by 3.5 MB (86%)
4.1 MB
582.0 kB
In fact, the total size of Chikahaku.jp main page is 4.1 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. 35% of websites need less resources to load. HTML takes 3.4 MB which makes up the majority of the site volume.
Potential reduce by 3.1 MB
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 3.1 MB or 92% of the original size.
Potential reduce by 40.2 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. Obviously, Chikahaku needs image optimization as it can save up to 40.2 kB or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 324.4 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 324.4 kB or 55% of the original size.
Potential reduce by 38.2 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. Chikahaku.jp needs all CSS files to be minified and compressed as it can save up to 38.2 kB or 83% of the original size.
Number of requests can be reduced by 8 (17%)
47
39
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chikahaku. 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 from 6 to 1 for CSS and as a result speed up the page load time.
chikahaku.jp
1038 ms
normalize.css
552 ms
common.css
906 ms
common_mobile.css
569 ms
pc.css
407 ms
mobile.css
636 ms
lightbox.css
603 ms
runtime.js
53 ms
jquery.min.js
29 ms
runtime.js
33 ms
footerFixed.js
344 ms
respond.js
684 ms
lightbox-2.6.min.js
359 ms
topanime.js
2084 ms
all.js
451 ms
img_header_logo.png
1251 ms
img_icon_grobal_pc01_off.png
949 ms
img_icon_grobal_pc02_off.png
913 ms
img_icon_grobal_pc03_off.png
957 ms
img_icon_grobal_pc04_off.png
928 ms
img_icon_grobal_pc05_off.png
981 ms
img_icon_grobal_pc06_off.png
1098 ms
img_icon_grobal_pc07_off.png
1115 ms
chikahaku_oc.php
1152 ms
chikahaku_oc.php
1495 ms
img_bg_conteiner.png
216 ms
close.png
217 ms
loading.gif
216 ms
prev.png
233 ms
next.png
273 ms
img_header_logo_sp.png
1280 ms
img_bg_header_city.png
586 ms
banner_ginamaru_kuruyo.png
953 ms
sc_bg.png
446 ms
title_tokubetsuten2.png
849 ms
img_icon_arrow_white.png
660 ms
title_metoro-concert.png
1150 ms
img_icon_arrow_blue.png
875 ms
title_haruyasumi2.png
2170 ms
img_in_arrow_brown01.png
1089 ms
img_top_notification002.png
1304 ms
img_panorama.png
2316 ms
img_top_qr.jpg
1336 ms
img_top_gurutto_2015.jpg
1462 ms
img_btn_backtop.png
1485 ms
img_bg_footer_sub.png
1562 ms
ga.js
231 ms
__utm.gif
114 ms
chikahaku.jp accessibility score
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
[aria-hidden="true"] elements contain focusable descendents
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
chikahaku.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
Issues were logged in the Issues panel in Chrome Devtools
chikahaku.jp SEO score
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 Chikahaku.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 Chikahaku.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.
chikahaku.jp
Open Graph description is not detected on the main page of Chikahaku. 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: