Tools & Wizards About Us
shaft-labo.jp screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

shaft-labo.jp

株式会社SHAFT - SHAFT Tuning Laboratory（二輪・四輪車両ダイナモ測定・インジェクションチューニング）

Page Load Speed

4.2 sec in total

First Response

638 ms

Resources Loaded

3.4 sec

Page Rendered

144 ms

shaft-labo.jp screenshot

About Website

Visit shaft-labo.jp now to see the best up-to-date SHAFT Labo content and also check out these interesting facts you probably never knew about shaft-labo.jp

シャフトは、二輪・四輪・一般車両・競技車両問わず、お客様の要望や仕様に合わせたセッティングを行うチューニングラボです。シャシーダイナモで測定したデータを元に、インジェクションチューニングを専門に行っています。

Visit shaft-labo.jp

Key Findings

We analyzed Shaft-labo.jp page load time and found that the first response time was 638 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

shaft-labo.jp performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value7.6 s

25/100

10%

TBT (Total Blocking Time)

Value90 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.07

96/100

15%

TTI (Time to Interactive)

Value7.0 s

52/100

10%

Network Requests Diagram

shaft-labo.jp

638 ms

shaft-labo.jp

671 ms

bootstrap.min.css

647 ms

main.css

486 ms

jquery.min.js

1141 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 69% of them (11 requests) were addressed to the original Shaft-labo.jp, 13% (2 requests) were made to Fonts.googleapis.com and 13% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Shaft-labo.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 235.8 kB (44%)

Content Size

535.0 kB

After Optimization

299.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Shaft-labo.jp main page is 535.0 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 225.8 kB which makes up the majority of the site volume.

HTML Optimization

-53%

Potential reduce by 1.8 kB

  • Original 3.4 kB
  • After minification 3.2 kB
  • After compression 1.6 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 1.8 kB or 53% of the original size.

Image Optimization

-5%

Potential reduce by 12.3 kB

  • Original 225.8 kB
  • After minification 213.5 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. SHAFT Labo images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 120.4 kB

  • Original 184.3 kB
  • After minification 184.3 kB
  • After compression 63.9 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 120.4 kB or 65% of the original size.

CSS Optimization

-83%

Potential reduce by 101.3 kB

  • Original 121.6 kB
  • After minification 119.8 kB
  • After compression 20.3 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. Shaft-labo.jp needs all CSS files to be minified and compressed as it can save up to 101.3 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (43%)

Requests Now

14

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SHAFT Labo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

shaft-labo.jp

shaft-labo.jp

638 ms

shaft-labo.jp

shaft-labo.jp

671 ms

bootstrap.min.css

bootstrap.min.css

647 ms

main.css

main.css

486 ms

jquery.min.js

jquery.min.js

1141 ms

bootstrap.min.js

bootstrap.min.js

1000 ms

css

css

19 ms

css

css

36 ms

bg_a.jpg

bg_a.jpg

969 ms

SHAFT_TUNING_LABORATORY.png

SHAFT_TUNING_LABORATORY.png

201 ms

img_01.png

img_01.png

162 ms

img_04.png

img_04.png

163 ms

img_05.png

img_05.png

324 ms

analytics.js

analytics.js

19 ms

collect

collect

14 ms

js

js

63 ms

Accessibility Review

shaft-labo.jp accessibility score

64

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

shaft-labo.jp best practices score

58

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

shaft-labo.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

    N/A

  • Encoding

    UTF-8

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

shaft-labo.jp

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