Tools & Wizards About Us

Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

tkls.co.jp

株式会社ツクルス

Page Load Speed

2.7 sec in total

First Response

357 ms

Resources Loaded

2.1 sec

Page Rendered

179 ms

About Website

Click here to check amazing Tkls content. Otherwise, check out these important facts you probably never knew about tkls.co.jp

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Key Findings

We analyzed Tkls.co.jp page load time and found that the first response time was 357 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

tkls.co.jp performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.1 s

87/100

10%

Network Requests Diagram

tkls.co.jp

357 ms

style.css

519 ms

coda-slider-2.0.css

348 ms

prettyPhoto.css

858 ms

jquery.min.js

7 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 83% of them (15 requests) were addressed to the original Tkls.co.jp, 11% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Tkls.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 84.8 kB (12%)

Content Size

705.2 kB

After Optimization

620.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tkls.co.jp main page is 705.2 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. 20% of websites need less resources to load. Images take 579.1 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 7.2 kB

  • Original 10.2 kB
  • After minification 9.1 kB
  • After compression 2.9 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 1.1 kB, which is 11% 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 7.2 kB or 71% of the original size.

Image Optimization

-2%

Potential reduce by 13.5 kB

  • Original 579.1 kB
  • After minification 565.6 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. Tkls images are well optimized though.

JavaScript Optimization

-40%

Potential reduce by 31.1 kB

  • Original 77.3 kB
  • After minification 72.5 kB
  • After compression 46.2 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 31.1 kB or 40% of the original size.

CSS Optimization

-85%

Potential reduce by 32.9 kB

  • Original 38.7 kB
  • After minification 34.0 kB
  • After compression 5.7 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. Tkls.co.jp needs all CSS files to be minified and compressed as it can save up to 32.9 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (29%)

Requests Now

17

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tkls. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

tkls.co.jp accessibility score

57

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.

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>).

Best Practices

tkls.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

SEO Factors

tkls.co.jp SEO score

62

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

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 Tkls.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 Tkls.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

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