Report Summary

  • 53

    Performance

    Renders faster than
    71% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

cssnite.jp

開催情報:CSS Nite

Page Load Speed

4.1 sec in total

First Response

551 ms

Resources Loaded

3.1 sec

Page Rendered

433 ms

cssnite.jp screenshot

About Website

Click here to check amazing CSS Nite content for Japan. Otherwise, check out these important facts you probably never knew about cssnite.jp

「CSS」だけでなく、Web制作全般に関するトピックを取り上げるセミナーイベント。都内のほか、神戸、岡山、甲府、札幌、静岡、高知、福岡、大阪、青森でも開催

Visit cssnite.jp

Key Findings

We analyzed Cssnite.jp page load time and found that the first response time was 551 ms and then it took 3.5 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

cssnite.jp performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value200 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.213

58/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

cssnite.jp

551 ms

cssnite.jp

895 ms

gtm.js

44 ms

bootstrap.min.css

38 ms

font-awesome.min.css

66 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 65% of them (20 requests) were addressed to the original Cssnite.jp, 13% (4 requests) were made to Maxcdn.bootstrapcdn.com and 10% (3 requests) were made to Dtp-transit.jp. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Dtp-transit.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 24.9 kB (2%)

Content Size

1.4 MB

After Optimization

1.3 MB

In fact, the total size of Cssnite.jp main page is 1.4 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. 25% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 18.5 kB

  • Original 24.3 kB
  • After minification 19.6 kB
  • After compression 5.8 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 4.7 kB, which is 19% 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 18.5 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 3.7 kB

  • Original 1.3 MB
  • After minification 1.3 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. CSS Nite images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 1.5 kB

  • Original 36.2 kB
  • After minification 36.1 kB
  • After compression 34.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-35%

Potential reduce by 1.2 kB

  • Original 3.6 kB
  • After minification 3.6 kB
  • After compression 2.4 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. Cssnite.jp needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 35% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (18%)

Requests Now

28

After Optimization

23

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CSS Nite. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

cssnite.jp accessibility score

94

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

cssnite.jp best practices score

75

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

Page has valid source maps

SEO Factors

cssnite.jp SEO score

98

Search Engine Optimization Advices

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 Cssnite.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 Cssnite.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 data is detected on the main page of CSS Nite. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: