Tools & Wizards About Us
blitz.co.jp screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

blitz.co.jp

トップ | BLITZ

Page Load Speed

11.6 sec in total

First Response

1.5 sec

Resources Loaded

9.4 sec

Page Rendered

690 ms

blitz.co.jp screenshot

About Website

Visit blitz.co.jp now to see the best up-to-date BLITZ content for Japan and also check out these interesting facts you probably never knew about blitz.co.jp

国産・輸入車向けの総合チューニングパーツメーカー。サスペンションキット、レーザー&レーダー探知機、電子パーツ、マフラー、エアクリーナー、ターボなど。東京都西東京市。

Visit blitz.co.jp

Key Findings

We analyzed Blitz.co.jp page load time and found that the first response time was 1.5 sec and then it took 10.1 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

blitz.co.jp performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

1/100

25%

SI (Speed Index)

Value15.0 s

1/100

10%

TBT (Total Blocking Time)

Value1,530 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

www.blitz.co.jp

1533 ms

bootstrap.min.css

329 ms

grid10.css

487 ms

slick-theme.css

485 ms

slick.css

492 ms

Our browser made a total of 187 requests to load all elements on the main page. We found that 86% of them (161 requests) were addressed to the original Blitz.co.jp, 4% (7 requests) were made to Google.com and 2% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Blitz.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 537.8 kB (3%)

Content Size

21.2 MB

After Optimization

20.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blitz.co.jp main page is 21.2 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. Only a small number of websites need less resources to load. Images take 20.8 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 112.6 kB

  • Original 130.3 kB
  • After minification 113.8 kB
  • After compression 17.7 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 16.5 kB, which is 13% 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 112.6 kB or 86% of the original size.

Image Optimization

-2%

Potential reduce by 415.3 kB

  • Original 20.8 MB
  • After minification 20.4 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. BLITZ images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.5 kB

  • Original 244.8 kB
  • After minification 244.8 kB
  • After compression 242.3 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

-16%

Potential reduce by 7.4 kB

  • Original 46.3 kB
  • After minification 46.3 kB
  • After compression 38.9 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. Blitz.co.jp needs all CSS files to be minified and compressed as it can save up to 7.4 kB or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (23%)

Requests Now

181

After Optimization

139

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 181 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BLITZ. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.blitz.co.jp

www.blitz.co.jp

1533 ms

bootstrap.min.css

bootstrap.min.css

329 ms

grid10.css

grid10.css

487 ms

slick-theme.css

slick-theme.css

485 ms

slick.css

slick.css

492 ms

lightbox.min.css

lightbox.min.css

526 ms

style.css

style.css

533 ms

css2

css2

38 ms

style_2023.css

style_2023.css

567 ms

footer_2022.css

footer_2022.css

646 ms

jquery-3.1.0.min.js

jquery-3.1.0.min.js

810 ms

bootstrap.min.js

bootstrap.min.js

654 ms

slick.min.js

slick.min.js

700 ms

app.js

app.js

708 ms

pagetop.js

pagetop.js

755 ms

hammersmith-one:n4:default.js

hammersmith-one:n4:default.js

42 ms

element.js

element.js

42 ms

lightbox.min.js

lightbox.min.js

804 ms

gtm.js

gtm.js

117 ms

close.png

close.png

193 ms

loading.gif

loading.gif

191 ms

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248 ms

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next.png

249 ms

logo.jpg

logo.jpg

191 ms

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247 ms

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515 ms

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516 ms

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517 ms

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583 ms

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557 ms

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400 ms

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754 ms

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823 ms

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822 ms

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663 ms

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898 ms

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962 ms

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990 ms

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928 ms

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983 ms

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984 ms

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1247 ms

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1105 ms

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1150 ms

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1146 ms

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1153 ms

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1282 ms

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1308 ms

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icon-car.svg

1307 ms

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icon-matching.svg

1341 ms

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icon-tvnavi.svg

1315 ms

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1422 ms

icon-zaiko.svg

icon-zaiko.svg

1459 ms

analytics.js

analytics.js

71 ms

icon-shop.svg

icon-shop.svg

1468 ms

cse.js

cse.js

169 ms

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFBEj75s.ttf

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFBEj75s.ttf

121 ms

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFE8j75s.ttf

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457 ms

-F6jfjtqLzI2JPCgQBnw7HFyzSD-AsregP8VFBEi75s.ttf

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656 ms

collect

collect

79 ms

js

js

61 ms

icon-info-gray.svg

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1285 ms

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1292 ms

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1338 ms

cse_element__ja.js

cse_element__ja.js

97 ms

default+ja.css

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156 ms

default.css

default.css

236 ms

slick.woff

slick.woff

1355 ms

icon-ig-gray.svg

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1393 ms

icon-yt-gray.svg

icon-yt-gray.svg

1387 ms

destination

destination

139 ms

ytag.js

ytag.js

904 ms

js

js

183 ms

fbevents.js

fbevents.js

182 ms

async-ads.js

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125 ms

branding.png

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124 ms

icon-contact-gray.svg

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1233 ms

96 ms

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78 ms

clear.png

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27 ms

icon-customer-gray.svg

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1131 ms

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1209 ms

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1260 ms

18 ms

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1240 ms

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1213 ms

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1153 ms

icon-privacy-gray.svg

icon-privacy-gray.svg

1054 ms

icon-global-gray.svg

icon-global-gray.svg

1090 ms

arrow_l.png

arrow_l.png

1129 ms

arrow_r.png

arrow_r.png

1059 ms

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1513 ms

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1661 ms

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1894 ms

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2060 ms

head-image-sp-40alvel_dsc.jpg

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2011 ms

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1497 ms

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1790 ms

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2103 ms

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1799 ms

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2078 ms

15 ms

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2013 ms

17 ms

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1993 ms

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2042 ms

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1927 ms

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2096 ms

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2087 ms

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1991 ms

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1965 ms

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1972 ms

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2057 ms

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2113 ms

alto_turbo.jpg

alto_turbo.jpg

2047 ms

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WordPress%E7%94%A8%E3%83%95%E3%82%A3%E3%83%AB%E3%82%BF%E3%83%BC%E7%94%BB%E5%83%8F.jpg

1983 ms

OBD2-BR1A.jpg

OBD2-BR1A.jpg

1988 ms

obd_image-1.jpg

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1975 ms

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2068 ms

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2099 ms

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2031 ms

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1998 ms

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2142 ms

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2206 ms

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2431 ms

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2093 ms

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2006 ms

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2886 ms

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2119 ms

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1639 ms

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1501 ms

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1850 ms

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1372 ms

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1475 ms

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Accessibility Review

blitz.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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

blitz.co.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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

blitz.co.jp SEO score

83

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

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

High

Tap targets are not sized appropriately

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 Blitz.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 Blitz.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

blitz.co.jp

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