Access deckers.jp. マンションのバルコニーをウッドデッキ施工するならデッカーズ!

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value210 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.125

83/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

deckers.jp

612 ms

lightbox.css

183 ms

main2.css

345 ms

style_sn.css

350 ms

prototype.js

524 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 93% of them (77 requests) were addressed to the original Deckers.jp, 5% (4 requests) were made to Google-analytics.com and 1% (1 request) were made to St.hzcdn.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Deckers.jp.

Content Size

1.1 MB

After Optimization

1.0 MB

In fact, the total size of Deckers.jp main page is 1.1 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. 55% of websites need less resources to load. Images take 957.7 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 22.4 kB

Original 33.9 kB
After minification 31.4 kB
After compression 11.5 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 22.4 kB or 66% of the original size.

Image Optimization

-0%

Potential reduce by 872 B

Original 957.7 kB
After minification 956.8 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. Deckers images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 11.8 kB

Original 85.7 kB
After minification 85.4 kB
After compression 73.9 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 11.8 kB or 14% of the original size.

CSS Optimization

-16%

Potential reduce by 902 B

Original 5.5 kB
After minification 5.5 kB
After compression 4.6 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. Deckers.jp needs all CSS files to be minified and compressed as it can save up to 902 B or 16% of the original size.

Requests Now

After Optimization

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Deckers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

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 Deckers.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 Deckers.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

deckers.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

マンションのバルコニーをウッドデッキ施工するならデッカーズ!

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

deckers.jp

lightbox.css

main2.css

style_sn.css

prototype.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

deckers.jp

lightbox.css

main2.css

style_sn.css

prototype.js

scriptaculous.js

lightbox.js

smartRollover.js

title.js

effects.js

builder.js

badge64_64@2x.png

head_bgi.jpg

site_logo.jpg

tel_number.jpg

sn_banner_03.png

sn_banner_05.png

sn_banner_04.png

gmenu_home.jpg

gmenu_aboutus.jpg

gmenu_works.jpg

gmenu_sitemap.jpg

gmenu_contactus.jpg

gmenu_qaa.jpg

gmenu_blog.jpg

gmenu_bottom01_bgi.jpg

gmenu_bottom02_bgi.jpg

gmenu_bottom03_bgi.jpg

gmenu_bottom04_bgi.jpg

gmenu_bottom_contact.jpg

gmenu_bottom_contact2.jpg

main.jpg

icon_click.jpg

menu_07off.jpg

menu_07txt.jpg

menu_08off.jpg

menu_08txt.jpg

menu_09txt.jpg

menu_09off.jpg

menu_10txt.jpg

menu_10off.jpg

top_zairyo_btn.jpg

top_btn_seisaku.jpg