Tools & Wizards About Us

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

drone-kentei.com

【 ドローン検定 】 公式サイト | 無人航空従事者試験 | ドローンの免許取得（登録講習機関）認定者数ナンバーワン

Page Load Speed

5.6 sec in total

First Response

547 ms

Resources Loaded

4.3 sec

Page Rendered

752 ms

About Website

Visit drone-kentei.com now to see the best up-to-date Drone Kentei content for Japan and also check out these interesting facts you probably never knew about drone-kentei.com

ドローン検定 協会 が実施する【ドローン検定】（無人航空従事者試験）の公式サイトです。ドローン検定は、登録講習機関として民間技能認定から国家資格としての免許取得までをドローン教習所と共にサポートする認定者数業界ナンバーワンの資格試験です。国内最初の登録講習機関として操縦者自身が正しい知識と技能を有した免許習得を目指します。

Visit drone-kentei.com

Key Findings

We analyzed Drone-kentei.com page load time and found that the first response time was 547 ms and then it took 5.1 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

drone-kentei.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value13.8 s

0/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value520 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0.541

14/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

drone-kentei.com

547 ms

drone-kentei.com

886 ms

js

97 ms

bootstrap-reboot.min.css

173 ms

bootstrap.min.css

858 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 51% of them (39 requests) were addressed to the original Drone-kentei.com, 17% (13 requests) were made to Static.xx.fbcdn.net and 12% (9 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Drone-kentei.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 439.9 kB (16%)

Content Size

2.7 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Drone-kentei.com main page is 2.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 39.1 kB

  • Original 50.4 kB
  • After minification 43.6 kB
  • After compression 11.3 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. This page needs HTML code to be minified as it can gain 6.8 kB, which is 13% 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 39.1 kB or 78% of the original size.

Image Optimization

-2%

Potential reduce by 33.3 kB

  • Original 2.2 MB
  • After minification 2.1 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. Drone Kentei images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 130.0 kB

  • Original 187.9 kB
  • After minification 187.8 kB
  • After compression 57.9 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 130.0 kB or 69% of the original size.

CSS Optimization

-86%

Potential reduce by 237.5 kB

  • Original 277.7 kB
  • After minification 267.6 kB
  • After compression 40.2 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. Drone-kentei.com needs all CSS files to be minified and compressed as it can save up to 237.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (38%)

Requests Now

66

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Drone Kentei. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

drone-kentei.com accessibility score

79

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

drone-kentei.com 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

drone-kentei.com SEO score

85

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 uses 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 Drone-kentei.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 Drone-kentei.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

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