Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

shirt.co.jp

メーカーズシャツ鎌倉 - MAKER'S SHIRT KAMAKURA

Page Load Speed

13.3 sec in total

First Response

991 ms

Resources Loaded

9 sec

Page Rendered

3.3 sec

shirt.co.jp screenshot

About Website

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

鎌倉シャツでは、正しいビジネスシーンの着こなしをお手伝いしています。日本では「正しい着こなし」を教えてくれる機会がほとんどありませんが、相手は服装を見ていることが多いのです。颯爽とした服を着て振る舞えば、きっと、説得力が高まります。

Visit shirt.co.jp

Key Findings

We analyzed Shirt.co.jp page load time and found that the first response time was 991 ms and then it took 12.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

shirt.co.jp performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value17.5 s

0/100

10%

TBT (Total Blocking Time)

Value2,390 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.3

39/100

15%

TTI (Time to Interactive)

Value12.2 s

15/100

10%

Network Requests Diagram

shirt.co.jp

991 ms

normalize.css

313 ms

font.css

476 ms

common.css

632 ms

shadowbox.css

350 ms

Our browser made a total of 124 requests to load all elements on the main page. We found that 90% of them (112 requests) were addressed to the original Shirt.co.jp, 4% (5 requests) were made to Google.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain Shirt.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 467.6 kB (11%)

Content Size

4.3 MB

After Optimization

3.8 MB

In fact, the total size of Shirt.co.jp main page is 4.3 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. 70% of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 27.6 kB

  • Original 34.4 kB
  • After minification 31.6 kB
  • After compression 6.8 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 27.6 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 74.5 kB

  • Original 3.7 MB
  • After minification 3.7 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. SHIRT images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 126.2 kB

  • Original 209.1 kB
  • After minification 209.0 kB
  • After compression 82.9 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 126.2 kB or 60% of the original size.

CSS Optimization

-83%

Potential reduce by 239.2 kB

  • Original 286.9 kB
  • After minification 273.7 kB
  • After compression 47.6 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. Shirt.co.jp needs all CSS files to be minified and compressed as it can save up to 239.2 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 43 (35%)

Requests Now

122

After Optimization

79

The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SHIRT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

shirt.co.jp accessibility score

72

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

High

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

shirt.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

shirt.co.jp SEO score

92

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

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 Shirt.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 Shirt.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

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