Tools & Wizards About Us
csharp.sevendays-study.com screenshot

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

csharp.sevendays-study.com

一週間で身につくC#言語の基本|トップページ～C#言語の初心者でも、簡単にプログラミングが気軽に学習できるサイトです。

Page Load Speed

22.4 sec in total

First Response

534 ms

Resources Loaded

21 sec

Page Rendered

893 ms

csharp.sevendays-study.com screenshot

About Website

Welcome to csharp.sevendays-study.com homepage info - get ready to check Csharp Sevendays Study best content for Japan right away, or after learning these important things about csharp.sevendays-study.com

プログラミングの初心者でも1週間でC#プログラミングが出来るように、基礎からきちんと学べるC#言語入門サイトです。基本的なプログラミングの方法から、オブジェクト指向を使ってプログラムを作る方法まで解説します。

Visit csharp.sevendays-study.com

Key Findings

We analyzed Csharp.sevendays-study.com page load time and found that the first response time was 534 ms and then it took 21.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

csharp.sevendays-study.com performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

75/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.075

95/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

csharp.sevendays-study.com

534 ms

style.css

175 ms

bookmark_button.js

50 ms

http:/

1 ms

analytics.js

16 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 56% of them (10 requests) were addressed to the original Csharp.sevendays-study.com, 11% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to B.st-hatena.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Ir-jp.amazon-adsystem.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 58.0 kB (49%)

Content Size

118.6 kB

After Optimization

60.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Csharp.sevendays-study.com main page is 118.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Javascripts take 55.5 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 17.8 kB

  • Original 22.5 kB
  • After minification 16.6 kB
  • After compression 4.7 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 5.9 kB, which is 26% 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 17.8 kB or 79% of the original size.

Image Optimization

-20%

Potential reduce by 7.7 kB

  • Original 39.2 kB
  • After minification 31.6 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. Obviously, Csharp Sevendays Study needs image optimization as it can save up to 7.7 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-58%

Potential reduce by 32.2 kB

  • Original 55.5 kB
  • After minification 55.5 kB
  • After compression 23.4 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 32.2 kB or 58% of the original size.

CSS Optimization

-26%

Potential reduce by 349 B

  • Original 1.3 kB
  • After minification 1.3 kB
  • After compression 975 B

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. Csharp.sevendays-study.com needs all CSS files to be minified and compressed as it can save up to 349 B or 26% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

15

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csharp Sevendays Study. According to our analytics all requests are already optimized.

Network Requests Diagram

csharp.sevendays-study.com

csharp.sevendays-study.com

534 ms

style.css

style.css

175 ms

bookmark_button.js

bookmark_button.js

50 ms

http:/

http:/

1 ms

analytics.js

analytics.js

16 ms

back.gif

back.gif

176 ms

ir

ir

20254 ms

logo.png

logo.png

339 ms

udemy.png

udemy.png

513 ms

logo.png

logo.png

348 ms

facebook.gif

facebook.gif

345 ms

twitter.gif

twitter.gif

352 ms

google_plus.gif

google_plus.gif

354 ms

hatebu.gif

hatebu.gif

506 ms

291 ms

collect

collect

40 ms

collect

collect

43 ms

41DAUXlnzAL._SL160_.jpg

41DAUXlnzAL._SL160_.jpg

31 ms

Accessibility Review

csharp.sevendays-study.com accessibility score

61

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

csharp.sevendays-study.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

csharp.sevendays-study.com SEO score

67

Search Engine Optimization Advices

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 Csharp.sevendays-study.com 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 Csharp.sevendays-study.com 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

csharp.sevendays-study.com

Open Graph description is not detected on the main page of Csharp Sevendays Study. 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: