Tools & Wizards About Us
kirihara.co.jp screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 59% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

kirihara.co.jp

桐原書店

Page Load Speed

6.7 sec in total

First Response

1.3 sec

Resources Loaded

4.9 sec

Page Rendered

486 ms

kirihara.co.jp screenshot

About Website

Welcome to kirihara.co.jp homepage info - get ready to check Kirihara best content for Japan right away, or after learning these important things about kirihara.co.jp

英語教材のリーディングカンパニー桐原書店の公式サイトです。英語・国語の教科書・副教材の他、小論文・デジタル教材・オンライン学習サービスなど、様々な学習をご案内しています。

Visit kirihara.co.jp

Key Findings

We analyzed Kirihara.co.jp page load time and found that the first response time was 1.3 sec and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

kirihara.co.jp performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value46.4 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.209

59/100

15%

TTI (Time to Interactive)

Value29.0 s

0/100

10%

Network Requests Diagram

www.kirihara.co.jp

1319 ms

parts.css

829 ms

customize.css

667 ms

jsapi

19 ms

default.v2.js

502 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 95% of them (62 requests) were addressed to the original Kirihara.co.jp, 2% (1 request) were made to Google.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Kirihara.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 772.3 kB (15%)

Content Size

5.2 MB

After Optimization

4.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kirihara.co.jp main page is 5.2 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. 50% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 55.7 kB

  • Original 63.3 kB
  • After minification 50.0 kB
  • After compression 7.6 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 13.3 kB, which is 21% 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 55.7 kB or 88% of the original size.

Image Optimization

-6%

Potential reduce by 287.8 kB

  • Original 4.6 MB
  • After minification 4.3 MB

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. Kirihara images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 138.2 kB

  • Original 201.4 kB
  • After minification 196.6 kB
  • After compression 63.1 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 138.2 kB or 69% of the original size.

CSS Optimization

-89%

Potential reduce by 290.6 kB

  • Original 326.1 kB
  • After minification 177.3 kB
  • After compression 35.5 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. Kirihara.co.jp needs all CSS files to be minified and compressed as it can save up to 290.6 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (8%)

Requests Now

61

After Optimization

56

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kirihara. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.kirihara.co.jp

www.kirihara.co.jp

1319 ms

parts.css

parts.css

829 ms

customize.css

customize.css

667 ms

jsapi

jsapi

19 ms

default.v2.js

default.v2.js

502 ms

html5shiv.min.js

html5shiv.min.js

503 ms

scripts.js

scripts.js

1005 ms

js

js

79 ms

loader.js

loader.js

17 ms

gaaddons_univ.js

gaaddons_univ.js

343 ms

symbol-animals.png

symbol-animals.png

191 ms

logo.svg

logo.svg

339 ms

symbol-owl.png

symbol-owl.png

192 ms

mm_heartening.jpg

mm_heartening.jpg

335 ms

mm_ronkoku.jpg

mm_ronkoku.jpg

191 ms

mm_factbook.jpg

mm_factbook.jpg

193 ms

mm_genkoku_cover.webp

mm_genkoku_cover.webp

337 ms

mm_7963_ext_07_0.jpg

mm_7963_ext_07_0.jpg

337 ms

9784342208638_cover_mm.webp

9784342208638_cover_mm.webp

505 ms

mm_9784342264900.jpg

mm_9784342264900.jpg

344 ms

9784342264955_cover_mm.webp

9784342264955_cover_mm.webp

669 ms

9784342209932_cover_mm.webp

9784342209932_cover_mm.webp

505 ms

9784342202971_cover_mm.webp

9784342202971_cover_mm.webp

669 ms

SKYWARD_OCEAN3rd_cover_mm.webp

SKYWARD_OCEAN3rd_cover_mm.webp

682 ms

974342209581_cover_mm.webp

974342209581_cover_mm.webp

507 ms

mm_9525_ext_07_0.jpg

mm_9525_ext_07_0.jpg

683 ms

9784342354045_cover_mm.webp

9784342354045_cover_mm.webp

683 ms

9784342353826_cover_mm.webp

9784342353826_cover_mm.webp

682 ms

9784342354106_cocer_mm.webp

9784342354106_cocer_mm.webp

837 ms

mm_9784342354144.webp

mm_9784342354144.webp

837 ms

9784342354236_cover_mm.webp

9784342354236_cover_mm.webp

850 ms

mm_9040_ext_07_0.jpg

mm_9040_ext_07_0.jpg

852 ms

9784342301285_cover_mm.webp

9784342301285_cover_mm.webp

850 ms

9784342354007_cover_mm.webp

9784342354007_cover_mm.webp

851 ms

mm_978434260225.jpg

mm_978434260225.jpg

1003 ms

mm_morinotest.webp

mm_morinotest.webp

1005 ms

mm_kiriharanomori_cloud.webp

mm_kiriharanomori_cloud.webp

1017 ms

mm_AEES.webp

mm_AEES.webp

1020 ms

mm_digital_fukukyozai.webp

mm_digital_fukukyozai.webp

1020 ms

10176_ext_01_0.jpg

10176_ext_01_0.jpg

2042 ms

10262_ext_01_0.jpg

10262_ext_01_0.jpg

1669 ms

10250_ext_01_0.jpg

10250_ext_01_0.jpg

1673 ms

10053_ext_01_0.jpg

10053_ext_01_0.jpg

1350 ms

9709_ext_01_0.png

9709_ext_01_0.png

1524 ms

9615_ext_01_0.png

9615_ext_01_0.png

1361 ms

9805_ext_01_0.png

9805_ext_01_0.png

1420 ms

9698_ext_01_0.png

9698_ext_01_0.png

1346 ms

9817_ext_01_0.jpg

9817_ext_01_0.jpg

1681 ms

8029_ext_01_0.jpg

8029_ext_01_0.jpg

1512 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1517 ms

fa-solid-900.woff

fa-solid-900.woff

1510 ms

10177_ext_01_0.jpg

10177_ext_01_0.jpg

1519 ms

9094_ext_01_0.png

9094_ext_01_0.png

1538 ms

9519_ext_01_0.png

9519_ext_01_0.png

1537 ms

22_ext_01_0.jpg

22_ext_01_0.jpg

1669 ms

9098_ext_01_0.png

9098_ext_01_0.png

1511 ms

9739_ext_01_0.png

9739_ext_01_0.png

1537 ms

6437_ext_01_0.jpg

6437_ext_01_0.jpg

1537 ms

8978_ext_01_0.png

8978_ext_01_0.png

1380 ms

9725_ext_01_0.jpeg

9725_ext_01_0.jpeg

1511 ms

6438_ext_01_0.jpg

6438_ext_01_0.jpg

1502 ms

9806_ext_01_0.jpg

9806_ext_01_0.jpg

1530 ms

10154_ext_01_0.jpg

10154_ext_01_0.jpg

1531 ms

10155_ext_01_0.jpg

10155_ext_01_0.jpg

1532 ms

pmark_02_JP.jpg

pmark_02_JP.jpg

1381 ms

Accessibility Review

kirihara.co.jp accessibility score

85

Accessibility Issues

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

High

[aria-hidden="true"] elements contain focusable descendents

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.

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

kirihara.co.jp 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

kirihara.co.jp SEO score

91

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

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kirihara.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 Kirihara.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.

Social Sharing Optimization

kirihara.co.jp

Open Graph data is detected on the main page of Kirihara. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: