Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 78

    SEO

    Google-friendlier than
    40% of websites

zasshi.com

株式会社データム

Page Load Speed

24.9 sec in total

First Response

1.3 sec

Resources Loaded

23.4 sec

Page Rendered

213 ms

zasshi.com screenshot

About Website

Click here to check amazing Zasshi content for Japan. Otherwise, check out these important facts you probably never knew about zasshi.com

Visit zasshi.com

Key Findings

We analyzed Zasshi.com page load time and found that the first response time was 1.3 sec and then it took 23.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

zasshi.com performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

95/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value14.9 s

1/100

10%

TBT (Total Blocking Time)

Value36,710 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value49.2 s

0/100

10%

Network Requests Diagram

zasshi.com

1268 ms

zasshicss.css

355 ms

sh.adingo.jp

493 ms

sh.adingo.jp

413 ms

sh.adingo.jp

359 ms

Our browser made a total of 166 requests to load all elements on the main page. We found that 15% of them (25 requests) were addressed to the original Zasshi.com, 7% (12 requests) were made to Cs.adingo.jp and 6% (10 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Spnet33.i-mobile.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 163.9 kB (32%)

Content Size

515.2 kB

After Optimization

351.3 kB

In fact, the total size of Zasshi.com main page is 515.2 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. 55% of websites need less resources to load. Images take 284.9 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 66.6 kB

  • Original 83.0 kB
  • After minification 81.3 kB
  • After compression 16.3 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. 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 66.6 kB or 80% of the original size.

Image Optimization

-6%

Potential reduce by 17.2 kB

  • Original 284.9 kB
  • After minification 267.7 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. Zasshi images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 74.1 kB

  • Original 139.5 kB
  • After minification 129.8 kB
  • After compression 65.4 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 74.1 kB or 53% of the original size.

CSS Optimization

-76%

Potential reduce by 6.0 kB

  • Original 7.9 kB
  • After minification 5.9 kB
  • After compression 1.9 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. Zasshi.com needs all CSS files to be minified and compressed as it can save up to 6.0 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 104 (68%)

Requests Now

153

After Optimization

49

The browser has sent 153 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zasshi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

zasshi.com accessibility score

58

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-*] attributes do not match their roles

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Best Practices

zasshi.com 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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

zasshi.com SEO score

78

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

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    SHIFT_JIS

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

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