Tools & Wizards About Us
zero.jp screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

zero.jp

ZERO | プロバイダーサービス

Page Load Speed

5.8 sec in total

First Response

545 ms

Resources Loaded

5.1 sec

Page Rendered

145 ms

zero.jp screenshot

About Website

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

プロバイダー「ZERO」は、低価格で安心・安全のインターネット接続サービスを提供する、GMOインターネットのサービスです。

Visit zero.jp

Key Findings

We analyzed Zero.jp page load time and found that the first response time was 545 ms and then it took 5.2 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

zero.jp performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value8.8 s

16/100

10%

TBT (Total Blocking Time)

Value890 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.292

41/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

zero.jp

545 ms

zero.jp

1550 ms

gtm.js

74 ms

this.css

327 ms

jquery.min.js

34 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 56% of them (29 requests) were addressed to the original Zero.jp, 15% (8 requests) were made to Cache.img.gmo.jp and 4% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Ssif1.globalsign.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 32.0 kB (8%)

Content Size

404.4 kB

After Optimization

372.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zero.jp main page is 404.4 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. 35% of websites need less resources to load. Javascripts take 273.9 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 23.9 kB

  • Original 32.4 kB
  • After minification 30.6 kB
  • After compression 8.4 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. 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 23.9 kB or 74% of the original size.

Image Optimization

-4%

Potential reduce by 4.0 kB

  • Original 89.5 kB
  • After minification 85.5 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. ZERO images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 3.3 kB

  • Original 273.9 kB
  • After minification 273.9 kB
  • After compression 270.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-8%

Potential reduce by 705 B

  • Original 8.6 kB
  • After minification 8.6 kB
  • After compression 7.9 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. Zero.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 23 (46%)

Requests Now

50

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZERO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zero.jp

zero.jp

545 ms

zero.jp

zero.jp

1550 ms

gtm.js

gtm.js

74 ms

this.css

this.css

327 ms

jquery.min.js

jquery.min.js

34 ms

api.js

api.js

48 ms

2021gmogs_130-66_ja.js

2021gmogs_130-66_ja.js

40 ms

siteseal.js

siteseal.js

784 ms

script.min.js

script.min.js

324 ms

script.min.js

script.min.js

332 ms

login_btn01.gif

login_btn01.gif

1024 ms

js

js

78 ms

analytics.js

analytics.js

29 ms

dv2dlr2ynj

dv2dlr2ynj

160 ms

collect

collect

102 ms

gs_noscript_130-66_ja.gif

gs_noscript_130-66_ja.gif

115 ms

tokub.png

tokub.png

1167 ms

smafi.png

smafi.png

1172 ms

netpro.png

netpro.png

1119 ms

zero.jp

zero.jp

1612 ms

collect

collect

66 ms

clarity.js

clarity.js

21 ms

footer.css

footer.css

302 ms

ga-audiences

ga-audiences

14 ms

logo_byGMO.gif

logo_byGMO.gif

296 ms

header_img01.gif

header_img01.gif

586 ms

header_img02.gif

header_img02.gif

658 ms

global_menu01.gif

global_menu01.gif

868 ms

global_menu02.gif

global_menu02.gif

935 ms

global_menu04.gif

global_menu04.gif

951 ms

main_bg01.gif

main_bg01.gif

1023 ms

mainImage_bg01.jpg

mainImage_bg01.jpg

1542 ms

mainImage_img02.gif

mainImage_img02.gif

1159 ms

mainImage_img03.gif

mainImage_img03.gif

1215 ms

mainImage_img04.gif

mainImage_img04.gif

1221 ms

main_img_bg02.gif

main_img_bg02.gif

1317 ms

login_ttl01.gif

login_ttl01.gif

1454 ms

login_ttl02.gif

login_ttl02.gif

1453 ms

login_ttl03.gif

login_ttl03.gif

1496 ms

login_ttl05.gif

login_ttl05.gif

1477 ms

loginatt_txt01.gif

loginatt_txt01.gif

1605 ms

admission_btn01.gif

admission_btn01.gif

1715 ms

list_img14.gif

list_img14.gif

1726 ms

topbottom_bg.png

topbottom_bg.png

1749 ms

recaptcha__en.js

recaptcha__en.js

50 ms

siteSeal.do

siteSeal.do

2285 ms

style.css

style.css

3 ms

style.css

style.css

7 ms

gmologo.svg

gmologo.svg

17 ms

weare_gmointernetgroup.svg

weare_gmointernetgroup.svg

20 ms

logo-gmo28th.svg

logo-gmo28th.svg

10 ms

logo-sdgs.svg

logo-sdgs.svg

3 ms

Accessibility Review

zero.jp accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

Best Practices

zero.jp best practices score

67

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

SEO Factors

zero.jp SEO score

69

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

zero.jp

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