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name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.782

5/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

k-seven.co.jp

542 ms

www.k-seven.co.jp

758 ms

import.css

170 ms

slick.css

336 ms

slick-theme.css

338 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 86% of them (65 requests) were addressed to the original K-seven.co.jp, 3% (2 requests) were made to Googletagmanager.com and 3% (2 requests) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain K-seven.co.jp.

Content Size

1.2 MB

After Optimization

1.1 MB

In fact, the total size of K-seven.co.jp main page is 1.2 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. 55% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 26.5 kB

Original 31.7 kB
After minification 27.9 kB
After compression 5.2 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 3.8 kB, which is 12% 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 26.5 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 994 B

Original 1.1 MB
After minification 1.1 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. K Seven images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 33.7 kB

Original 94.8 kB
After minification 94.8 kB
After compression 61.1 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 33.7 kB or 36% of the original size.

CSS Optimization

-16%

Potential reduce by 917 B

Original 5.6 kB
After minification 5.6 kB
After compression 4.7 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. K-seven.co.jp needs all CSS files to be minified and compressed as it can save up to 917 B or 16% of the original size.

Requests Now

After Optimization

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of K Seven. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

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

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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

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

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise K-seven.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 K-seven.co.jp main page’s claimed encoding is euc-jp. 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

k-seven.co.jp

Open Graph description is not detected on the main page of K Seven. 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

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

k-seven.co.jp

www.k-seven.co.jp

import.css

slick.css

slick-theme.css

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

k-seven.co.jp

www.k-seven.co.jp

import.css

slick.css

slick-theme.css

dw_common.js

JUDGE.JS

smartRollover.js

js

jsapi

state.js

jquery-1.11.0.min.js

jquery-migrate-1.2.1.min.js

slick.min.js

loader.js

content.css

base.css

top.css

form.css

uh.js

bg_body.gif

logo.jpg

g_nav_01_off.gif

g_nav_02_off.gif

g_nav_03_off.gif

g_nav_04_off.gif

g_nav_05_off.gif

g_nav_06_off.gif

g_nav_07_off.gif

g_nav_08_off.gif

mainslide_img1_01.jpg

mainslide_img1_02.jpg

mainslide_img1_03.jpg

mainslide_img1_04.jpg

mainslide_img2_01.jpg

mainslide_img2_02.jpg

mainslide_img2_03.jpg

mainslide_img2_04.jpg

mainslide_img3_01.jpg

mainslide_img3_02.jpg

mainslide_img3_03.jpg

mainslide_img3_04.jpg

mainslide_img4_01.jpg

mainslide_img4_02.jpg