Tools & Wizards About Us
cso.co.jp screenshot

Report Summary

  • 71

    Performance

    Renders faster than
    82% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

cso.co.jp

自転車通販 千葉県松戸市のサイクルサービスおおやまオンラインショップ

Page Load Speed

3.7 sec in total

First Response

836 ms

Resources Loaded

2.6 sec

Page Rendered

183 ms

cso.co.jp screenshot

About Website

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

千葉県松戸市のスポーツ自転車専門店 サイクルサービスおおやまの自転車通販!!Birdy、BROMPTONなど人気の折りたたみ自転車、クロスバイク、ロードバイク、ＭＴＢなどスポーツ自転車を中心に豊富な品揃えでお待ちしております

Visit cso.co.jp

Key Findings

We analyzed Cso.co.jp page load time and found that the first response time was 836 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cso.co.jp performance score

71

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

58/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value5.1 s

75/100

10%

Network Requests Diagram

cso.co.jp

836 ms

style.css

459 ms

menu.js

306 ms

trek.gif

1176 ms

birdy.gif

1187 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that all of those requests were addressed to Cso.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Cso.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 45.7 kB (27%)

Content Size

171.3 kB

After Optimization

125.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cso.co.jp main page is 171.3 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. 20% of websites need less resources to load. Images take 120.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 16.0 kB

  • Original 20.6 kB
  • After minification 20.3 kB
  • After compression 4.6 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. 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 16.0 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 3.4 kB

  • Original 120.6 kB
  • After minification 117.1 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. Cso images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 2.2 kB

  • Original 3.0 kB
  • After minification 2.6 kB
  • After compression 827 B

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 2.2 kB or 73% of the original size.

CSS Optimization

-89%

Potential reduce by 24.0 kB

  • Original 27.1 kB
  • After minification 19.9 kB
  • After compression 3.1 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. Cso.co.jp needs all CSS files to be minified and compressed as it can save up to 24.0 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (43%)

Requests Now

56

After Optimization

32

  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cso. 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.

Network Requests Diagram

cso.co.jp

cso.co.jp

836 ms

style.css

style.css

459 ms

menu.js

menu.js

306 ms

trek.gif

trek.gif

1176 ms

birdy.gif

birdy.gif

1187 ms

fisher.gif

fisher.gif

1241 ms

giant.gif

giant.gif

1244 ms

rm.gif

rm.gif

1245 ms

brompton.gif

brompton.gif

1277 ms

panasonic.gif

panasonic.gif

1317 ms

bontrager.gif

bontrager.gif

1338 ms

dahon.gif

dahon.gif

1414 ms

pacific.gif

pacific.gif

1422 ms

masi.gif

masi.gif

1421 ms

bruno.gif

bruno.gif

1470 ms

white.gif

white.gif

157 ms

t_back.gif

t_back.gif

183 ms

tittle.gif

tittle.gif

154 ms

home_on.gif

home_on.gif

307 ms

bike_off.gif

bike_off.gif

309 ms

parts_off.gif

parts_off.gif

341 ms

tokka_off.gif

tokka_off.gif

343 ms

interi_off.gif

interi_off.gif

360 ms

menber_off.gif

menber_off.gif

360 ms

main_1.jpg

main_1.jpg

608 ms

main_2.jpg

main_2.jpg

462 ms

cross_off.jpg

cross_off.jpg

511 ms

fdb_off.jpg

fdb_off.jpg

512 ms

main_3.jpg

main_3.jpg

538 ms

road_off.jpg

road_off.jpg

539 ms

mini_off.jpg

mini_off.jpg

615 ms

flat_off.jpg

flat_off.jpg

681 ms

kids_off.jpg

kids_off.jpg

683 ms

mtb_off.jpg

mtb_off.jpg

716 ms

other_off.jpg

other_off.jpg

717 ms

menubg.jpg

menubg.jpg

758 ms

sign.gif

sign.gif

768 ms

sokunou.gif

sokunou.gif

1020 ms

kanreki.jpg

kanreki.jpg

851 ms

inform.gif

inform.gif

896 ms

orderspoke.gif

orderspoke.gif

897 ms

charipo.gif

charipo.gif

908 ms

cso.gif

cso.gif

921 ms

sidemenubg.jpg

sidemenubg.jpg

1021 ms

sign_red.gif

sign_red.gif

1075 ms

sign_red1.gif

sign_red1.gif

1075 ms

flat.jpg

flat.jpg

1059 ms

sign_navy.gif

sign_navy.gif

1076 ms

cage.jpg

cage.jpg

1187 ms

sign_green.gif

sign_green.gif

1190 ms

bob.jpg

bob.jpg

1162 ms

sign_maroon1.gif

sign_maroon1.gif

1113 ms

glass.jpg

glass.jpg

1113 ms

sign_olive.gif

sign_olive.gif

1059 ms

support2.jpg

support2.jpg

1064 ms

sign_gray1.gif

sign_gray1.gif

1065 ms

tel.jpg

tel.jpg

1033 ms

Accessibility Review

cso.co.jp accessibility score

76

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cso.co.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

High

Browser errors were logged to the console

SEO Factors

cso.co.jp SEO score

92

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

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 Cso.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 Cso.co.jp 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

cso.co.jp

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