Analyze 東京日本語學校

東京日本語學校 長沼學校(Naganuma School)自1948年於東京創辦以來,持續致力於日語教育,為日本歷史最久的名校與獲得許可的語言學校之一。也提供適合的課程給希望進入日本各大學唸書的人。

Page load speed analysis

  • 54/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    1.2 sec

  • Resources loaded

    5.1 sec

  • Page rendered

    144 ms

  • Total page load time

    6.4 sec

Welcome to homepage info - get ready to check Naganuma School best content right away, or after learning these important things about

We analyzed page load time and found that the first response time was 1.2 sec and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Page optimization

  • HTML 156.1 kB
    Images 16.1 kB
    Javascripts 678.9 kB
    CSS 3.6 kB

    In fact, the total size of main page is 854.8 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. 50% of websites need less resources to load. Javascripts take 678.9 kB which makes up the majority of the site volume.

    • Original 156.1 kB
    • After minification 155.0 kB
    • After compression 37.4 kB

    HTML optimization

    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 118.7 kB or 76% of the original size.

    • Original 16.1 kB
    • After optimization 15.2 kB

    Image optimization

    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. Naganuma School images are well optimized though.

    • Original 678.9 kB
    • After minification 675.9 kB
    • After compression 215.9 kB

    JavaScript optimization

    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 463.0 kB or 68% of the original size.

    • Original 3.6 kB
    • After minification 3.0 kB
    • After compression 694 B

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 2.9 kB or 81% of the original size.

Network requests diagram

  • css.css
  • AC_RunActiveContent.js
  • addthis_widget.js
  • index_02.gif
  • index_01.gif
  • top_icon.png
  • top_line.png
  • t_bnr_contact_s.jpg
  • btn01.gif
  • btn02.gif
  • btn03.gif
  • btn04.gif
  • graduate_sc_img01.jpg
  • bnr_graduate_sc.gif
  • FacebookBanner.JPG
  • index_12.gif
  • index_13.gif
  • index_14.gif
  • bar_bg.gif
  • icon.png
  • index_10.gif
  • index_11.gif
  • ga.js
  • all.js
  • 300lo.json
  • 360.e2a821d32e049365e827.js
  • 487.a73e6a2261453f9dbfa8.js
  • sh.8e5f85691f9aaa082472a194.html
  • __utm.gif
  • xd_arbiter.php
  • xd_arbiter.php
  • layers.e5ea973510bf60b3db41.js
  • zh-tw.js
  • btn01_1.gif
  • btn02_1.gif
  • btn03_1.gif
  • btn04_1.gif
  • xd_arbiter.php

Our browser made a total of 40 requests to load all elements on the main page. We found that 65% of them (26 requests) were addressed to the original, 15% (6 requests) were made to and 8% (3 requests) were made to The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain

Additional info on


The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Naganuma School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Normal result

IP address

This IP address is dedicated to This is the best domain hosting practice .

Good result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 597
NS 599
NS 599

599 Mname:
Serial: 1477977432
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum-ttl: 10800
MX 599 Pri: 10

Language and encoding

Normal result


JA ja language flag


ZH zh language flag





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

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Unfortunately, we cannot identify the countries where the visitors come from and thus it’s impossible to define if the distance can potentially affect the page load time.

Good result

Normal result

Social Sharing Optimization

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

Share this report in social media

Analyze another website