Tools & Wizards About Us
zento-open.info screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

zento-open.info

小学校受験を目指す年中・年長児の方の模試 全統オープン

Page Load Speed

7.3 sec in total

First Response

915 ms

Resources Loaded

6.1 sec

Page Rendered

258 ms

zento-open.info screenshot

About Website

Welcome to zento-open.info homepage info - get ready to check Zento Open best content for Japan right away, or after learning these important things about zento-open.info

全統オープンは,小学校受験をお考えになるご家庭のための全国規模の新しい総合テストです。

Visit zento-open.info

Key Findings

We analyzed Zento-open.info page load time and found that the first response time was 915 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

zento-open.info performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value7.6 s

26/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value5.0 s

77/100

10%

Network Requests Diagram

zento-open.info

915 ms

base.css

695 ms

script.js

368 ms

smoothscroll.js

564 ms

news.php

341 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 89% of them (50 requests) were addressed to the original Zento-open.info, 5% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Js.ptengine.jp. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Zento-open.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 87.7 kB (9%)

Content Size

1.0 MB

After Optimization

935.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zento-open.info main page is 1.0 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. 20% of websites need less resources to load. Images take 923.9 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 14.1 kB

  • Original 18.2 kB
  • After minification 13.6 kB
  • After compression 4.1 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. This page needs HTML code to be minified as it can gain 4.6 kB, which is 25% 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 14.1 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 28.4 kB

  • Original 923.9 kB
  • After minification 895.5 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. Zento Open images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 34.3 kB

  • Original 68.0 kB
  • After minification 65.3 kB
  • After compression 33.7 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 34.3 kB or 50% of the original size.

CSS Optimization

-81%

Potential reduce by 11.0 kB

  • Original 13.7 kB
  • After minification 10.4 kB
  • After compression 2.6 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. Zento-open.info needs all CSS files to be minified and compressed as it can save up to 11.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (24%)

Requests Now

55

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zento Open. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zento-open.info

zento-open.info

915 ms

base.css

base.css

695 ms

script.js

script.js

368 ms

smoothscroll.js

smoothscroll.js

564 ms

news.php

news.php

341 ms

bg_body.gif

bg_body.gif

335 ms

bg_header.gif

bg_header.gif

344 ms

btn_member_n.jpg

btn_member_n.jpg

505 ms

bg_top-menu.jpg

bg_top-menu.jpg

727 ms

menu.jpg

menu.jpg

1232 ms

main_img2016.jpg

main_img2016.jpg

2178 ms

bnr2016_0417.jpg

bnr2016_0417.jpg

1385 ms

bnr2016_0417_n.jpg

bnr2016_0417_n.jpg

1432 ms

bnr2016_02.jpg

bnr2016_02.jpg

1605 ms

bnr_160424_01.jpg

bnr_160424_01.jpg

1709 ms

bnr2016_04.jpg

bnr2016_04.jpg

2146 ms

bnr2016_05.jpg

bnr2016_05.jpg

2433 ms

bnr2016_06.jpg

bnr2016_06.jpg

2482 ms

bnr_guide1602.jpg

bnr_guide1602.jpg

2339 ms

bg_open_school_bl.jpg

bg_open_school_bl.jpg

2028 ms

img151201_01.png

img151201_01.png

2572 ms

btn_detail.gif

btn_detail.gif

2469 ms

bg_open_school.jpg

bg_open_school.jpg

2497 ms

img151201_02.png

img151201_02.png

2855 ms

btn_pagetop.gif

btn_pagetop.gif

2778 ms

ti_left_news.jpg

ti_left_news.jpg

2833 ms

bg_new_btn.gif

bg_new_btn.gif

2844 ms

btn_yoyaku_01.png

btn_yoyaku_01.png

3047 ms

btn_yoyaku_02.png

btn_yoyaku_02.png

2947 ms

btn_yoyaku_03.png

btn_yoyaku_03.png

3128 ms

ti_left_school.jpg

ti_left_school.jpg

3184 ms

allow_pink.gif

allow_pink.gif

3177 ms

ti_left_topics.jpg

ti_left_topics.jpg

3189 ms

bnr_column.jpg

bnr_column.jpg

3450 ms

bnr_repo.jpg

bnr_repo.jpg

3547 ms

bnr_repoform.jpg

bnr_repoform.jpg

3605 ms

ga.js

ga.js

7 ms

pta.js

pta.js

490 ms

__utm.gif

__utm.gif

13 ms

__utm.gif

__utm.gif

15 ms

bg_news2.jpg

bg_news2.jpg

3166 ms

icon_bullet.gif

icon_bullet.gif

3220 ms

60f39c6b.js

60f39c6b.js

489 ms

pn

pn

526 ms

btn_member_on.jpg

btn_member_on.jpg

363 ms

btn_material_on.jpg

btn_material_on.jpg

484 ms

bnr_column_on.jpg

bnr_column_on.jpg

496 ms

bnr_repo_on.jpg

bnr_repo_on.jpg

551 ms

bnr_repoform_on.jpg

bnr_repoform_on.jpg

576 ms

bnr_mail_on.jpg

bnr_mail_on.jpg

574 ms

btn_mensetsu_on.jpg

btn_mensetsu_on.jpg

840 ms

btn_login_on.jpg

btn_login_on.jpg

1174 ms

btn_reg_ov.jpg

btn_reg_ov.jpg

1229 ms

btn_yoyaku_01_on.png

btn_yoyaku_01_on.png

1053 ms

btn_yoyaku_02_on.png

btn_yoyaku_02_on.png

936 ms

btn_yoyaku_03_on.png

btn_yoyaku_03_on.png

942 ms

Accessibility Review

zento-open.info accessibility score

88

Accessibility Issues

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

Links do not have a discernible name

Best Practices

zento-open.info 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

zento-open.info SEO score

86

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

High

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zento-open.info 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 Zento-open.info main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

zento-open.info

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