Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

html5exam.jp

Web資格なら「HTML5プロフェッショナル認定試験」公式サイト

Page Load Speed

6.6 sec in total

First Response

1.3 sec

Resources Loaded

4.9 sec

Page Rendered

452 ms

html5exam.jp screenshot

About Website

Click here to check amazing Html 5 Exam content for Japan. Otherwise, check out these important facts you probably never knew about html5exam.jp

Webプロフェッショナルの知識と技術を認定するHTML5プロフェッショナル認定試験の公式サイトです。資格取得のための試験概要や出題範囲だけでなく、学習に役立つコンテンツや次世代のWebプロフェッショナル必見の情報をご紹介しています。

Visit html5exam.jp

Key Findings

We analyzed Html5exam.jp page load time and found that the first response time was 1.3 sec and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

html5exam.jp performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value19.5 s

0/100

25%

SI (Speed Index)

Value16.9 s

0/100

10%

TBT (Total Blocking Time)

Value780 ms

38/100

30%

CLS (Cumulative Layout Shift)

Value1.444

0/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

Network Requests Diagram

html5exam.jp

1314 ms

base.css

341 ms

top.css

685 ms

common.css

345 ms

mv.css

554 ms

Our browser made a total of 122 requests to load all elements on the main page. We found that 72% of them (88 requests) were addressed to the original Html5exam.jp, 7% (8 requests) were made to Google.com and 2% (3 requests) were made to Cse.google.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Html5exam.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 424.1 kB (45%)

Content Size

937.3 kB

After Optimization

513.2 kB

In fact, the total size of Html5exam.jp main page is 937.3 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. 70% of websites need less resources to load. Javascripts take 491.4 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 57.6 kB

  • Original 72.8 kB
  • After minification 66.3 kB
  • After compression 15.2 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. 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 57.6 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 9.7 kB

  • Original 314.5 kB
  • After minification 304.8 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. Html 5 Exam images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 309.4 kB

  • Original 491.4 kB
  • After minification 474.7 kB
  • After compression 182.1 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 309.4 kB or 63% of the original size.

CSS Optimization

-81%

Potential reduce by 47.4 kB

  • Original 58.6 kB
  • After minification 45.7 kB
  • After compression 11.2 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. Html5exam.jp needs all CSS files to be minified and compressed as it can save up to 47.4 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 52 (44%)

Requests Now

119

After Optimization

67

The browser has sent 119 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Html 5 Exam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

html5exam.jp accessibility score

87

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

html5exam.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

html5exam.jp SEO score

79

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

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 doesn't use legible font sizes

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 Html5exam.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 Html5exam.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 Html 5 Exam. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: