Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

kkf.co.jp

東京の賃貸デザイナーズマンションは空間建築ファクトリー

Page Load Speed

7.4 sec in total

First Response

551 ms

Resources Loaded

6.4 sec

Page Rendered

435 ms

kkf.co.jp screenshot

About Website

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

自分らしい暮らし方、はじめませんか?-空間建築ファクトリーは1999年創業の、東京都内にあるデザイナーズマンション専門の賃貸不動産セレクトショップです。

Visit kkf.co.jp

Key Findings

We analyzed Kkf.co.jp page load time and found that the first response time was 551 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

kkf.co.jp performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

3/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value15.7 s

0/100

10%

TBT (Total Blocking Time)

Value8,750 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value20.6 s

2/100

10%

Network Requests Diagram

kkf.co.jp

551 ms

www.kkf.co.jp

2291 ms

style.css

854 ms

coin-slider-styles.css

356 ms

241397266742eaf187fb91970f140442.css

361 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 57% of them (55 requests) were addressed to the original Kkf.co.jp, 4% (4 requests) were made to Platform.twitter.com and 3% (3 requests) were made to E-pagerank.net. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Kkf.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 323.9 kB (25%)

Content Size

1.3 MB

After Optimization

983.6 kB

In fact, the total size of Kkf.co.jp main page is 1.3 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. 50% of websites need less resources to load. Images take 957.0 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 65.6 kB

  • Original 83.0 kB
  • After minification 79.9 kB
  • After compression 17.4 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 65.6 kB or 79% of the original size.

Image Optimization

-9%

Potential reduce by 88.9 kB

  • Original 957.0 kB
  • After minification 868.2 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. Kkf images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 139.9 kB

  • Original 232.7 kB
  • After minification 229.7 kB
  • After compression 92.7 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 139.9 kB or 60% of the original size.

CSS Optimization

-85%

Potential reduce by 29.5 kB

  • Original 34.8 kB
  • After minification 24.3 kB
  • After compression 5.3 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. Kkf.co.jp needs all CSS files to be minified and compressed as it can save up to 29.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (45%)

Requests Now

93

After Optimization

51

The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kkf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

kkf.co.jp accessibility score

71

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

kkf.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

kkf.co.jp SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    UTF-8

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

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