Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 46

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

sogakusha.co.jp

にほんご書店そうがく社

Page Load Speed

5.5 sec in total

First Response

931 ms

Resources Loaded

4.2 sec

Page Rendered

353 ms

sogakusha.co.jp screenshot

About Website

Visit sogakusha.co.jp now to see the best up-to-date Sogakusha content for Japan and also check out these interesting facts you probably never knew about sogakusha.co.jp

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Key Findings

We analyzed Sogakusha.co.jp page load time and found that the first response time was 931 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

sogakusha.co.jp performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.0 s

100/100

25%

SI (Speed Index)

Value1.4 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value0.9 s

100/100

10%

Network Requests Diagram

sogakusha.co.jp

931 ms

lolo.jpg

404 ms

nihongoshoten.gif

404 ms

sogakushashiro.gif

405 ms

logo64.gif

408 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that all of those requests were addressed to Sogakusha.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Sogakusha.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 35.1 kB (46%)

Content Size

76.8 kB

After Optimization

41.7 kB

In fact, the total size of Sogakusha.co.jp main page is 76.8 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. Only 10% of websites need less resources to load. Images take 43.5 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 28.9 kB

  • Original 33.4 kB
  • After minification 20.9 kB
  • After compression 4.4 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 12.5 kB, which is 37% 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 28.9 kB or 87% of the original size.

Image Optimization

-14%

Potential reduce by 6.2 kB

  • Original 43.5 kB
  • After minification 37.3 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, Sogakusha needs image optimization as it can save up to 6.2 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 33 (61%)

Requests Now

54

After Optimization

21

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sogakusha. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

sogakusha.co.jp accessibility score

46

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

sogakusha.co.jp best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

sogakusha.co.jp SEO score

50

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sogakusha.co.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 Sogakusha.co.jp main page’s claimed encoding is euc-jp. 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

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