Tools & Wizards About Us
cpp-lang.sevendays-study.com screenshot

Report Summary

  • 91

    Performance

    Renders faster than
    91% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

cpp-lang.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

3.3 sec in total

First Response

607 ms

Resources Loaded

2.4 sec

Page Rendered

309 ms

cpp-lang.sevendays-study.com screenshot

About Website

Visit cpp-lang.sevendays-study.com now to see the best up-to-date Cpp Lang Sevendays Study content for Japan and also check out these interesting facts you probably never knew about cpp-lang.sevendays-study.com

すでにC言語について学んだプログラマーが1週間でC++言語で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サイトです。オブジェクト指向やクラスの基本概念から、継承やSTLやテンプレートなどといった行動な話題まで取り扱っています。

Visit cpp-lang.sevendays-study.com

Key Findings

We analyzed Cpp-lang.sevendays-study.com page load time and found that the first response time was 607 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cpp-lang.sevendays-study.com performance score

91

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

63/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value1.9 s

100/100

10%

Network Requests Diagram

cpp-lang.sevendays-study.com

607 ms

style.css

200 ms

bookmark_button.js

650 ms

ads.js

174 ms

analytics.js

78 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 31% of them (9 requests) were addressed to the original Cpp-lang.sevendays-study.com, 21% (6 requests) were made to Ecx.images-amazon.com and 10% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (843 ms) relates to the external source Ad.jp.ap.valuecommerce.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 67.6 kB (41%)

Content Size

165.2 kB

After Optimization

97.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cpp-lang.sevendays-study.com main page is 165.2 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. Images take 70.5 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 15.1 kB

  • Original 20.4 kB
  • After minification 19.0 kB
  • After compression 5.3 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 15.1 kB or 74% of the original size.

Image Optimization

-7%

Potential reduce by 5.2 kB

  • Original 70.5 kB
  • After minification 65.3 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. Cpp Lang Sevendays Study images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 44.0 kB

  • Original 70.1 kB
  • After minification 64.7 kB
  • After compression 26.1 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 44.0 kB or 63% of the original size.

CSS Optimization

-77%

Potential reduce by 3.3 kB

  • Original 4.3 kB
  • After minification 2.8 kB
  • After compression 977 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. Cpp-lang.sevendays-study.com needs all CSS files to be minified and compressed as it can save up to 3.3 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (30%)

Requests Now

27

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cpp Lang Sevendays Study. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cpp-lang.sevendays-study.com

cpp-lang.sevendays-study.com

607 ms

style.css

style.css

200 ms

bookmark_button.js

bookmark_button.js

650 ms

ads.js

ads.js

174 ms

analytics.js

analytics.js

78 ms

back.gif

back.gif

200 ms

ads-common.js

ads-common.js

231 ms

imp

imp

6 ms

show

show

8 ms

facebook.gif

facebook.gif

360 ms

twitter.gif

twitter.gif

369 ms

google_plus.gif

google_plus.gif

362 ms

hatebu.gif

hatebu.gif

363 ms

logo.png

logo.png

389 ms

logo_book.png

logo_book.png

607 ms

JP_160x600-Surface-Pro-3.jpg

JP_160x600-Surface-Pro-3.jpg

10 ms

collect

collect

124 ms

cm

cm

169 ms

htmlbanner

htmlbanner

843 ms

51vZEKlI+nL._SL70_.jpg

51vZEKlI+nL._SL70_.jpg

11 ms

190 ms

61o9Uw8eiWL._SL70_.jpg

61o9Uw8eiWL._SL70_.jpg

11 ms

419laUEIHTL._SL70_.jpg

419laUEIHTL._SL70_.jpg

11 ms

218 ms

51vZEKlI+nL._OU09_SL70_PI25-percent,BottomRight,0,0_CR0,0,50,70_.jpg

51vZEKlI+nL._OU09_SL70_PI25-percent,BottomRight,0,0_CR0,0,50,70_.jpg

18 ms

61o9Uw8eiWL._OU09_SL70_PI23-percent,BottomRight,0,0_CR0,0,70,51_.jpg

61o9Uw8eiWL._OU09_SL70_PI23-percent,BottomRight,0,0_CR0,0,70,51_.jpg

8 ms

419laUEIHTL._OU09_SL70_PI26-percent,BottomRight,0,0_CR0,0,70,30_.jpg

419laUEIHTL._OU09_SL70_PI26-percent,BottomRight,0,0_CR0,0,70,30_.jpg

7 ms

08.gif

08.gif

517 ms

collect

collect

5 ms

Accessibility Review

cpp-lang.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

cpp-lang.sevendays-study.com best practices score

75

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

SEO Factors

cpp-lang.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 Cpp-lang.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 Cpp-lang.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

cpp-lang.sevendays-study.com

Open Graph description is not detected on the main page of Cpp Lang 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: