Tools & Wizards About Us
drone-kentei.com screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 46

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% 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

10.5 sec in total

First Response

549 ms

Resources Loaded

9.7 sec

Page Rendered

246 ms

drone-kentei.com screenshot

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 549 ms and then it took 9.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

drone-kentei.com performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value1,210 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.095

91/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

drone-kentei.com

549 ms

drone-kentei.com

905 ms

analytics.js

38 ms

common.css

183 ms

style.css

357 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 75% of them (33 requests) were addressed to the original Drone-kentei.com, 7% (3 requests) were made to Facebook.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (6.2 sec) relates to the external source Seal.securecore.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 190.1 kB (27%)

Content Size

691.4 kB

After Optimization

501.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Drone-kentei.com main page is 691.4 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. 45% of websites need less resources to load. Images take 441.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 23.2 kB

  • Original 30.5 kB
  • After minification 25.8 kB
  • After compression 7.3 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 4.7 kB, which is 15% 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 23.2 kB or 76% of the original size.

Image Optimization

-4%

Potential reduce by 17.1 kB

  • Original 441.4 kB
  • After minification 424.3 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. Drone Kentei images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 135.1 kB

  • Original 200.4 kB
  • After minification 161.1 kB
  • After compression 65.3 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 135.1 kB or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 14.7 kB

  • Original 19.1 kB
  • After minification 15.6 kB
  • After compression 4.4 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. Drone-kentei.com needs all CSS files to be minified and compressed as it can save up to 14.7 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (24%)

Requests Now

41

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 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 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

drone-kentei.com

drone-kentei.com

549 ms

drone-kentei.com

drone-kentei.com

905 ms

analytics.js

analytics.js

38 ms

common.css

common.css

183 ms

style.css

style.css

357 ms

pc.css

pc.css

525 ms

validationEngine.jquery.css

validationEngine.jquery.css

523 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

861 ms

jquery.validationEngine-ja.js

jquery.validationEngine-ja.js

525 ms

jquery.validationEngine.js

jquery.validationEngine.js

895 ms

ss_130-50.js

ss_130-50.js

920 ms

collect

collect

15 ms

collect

collect

41 ms

ga-audiences

ga-audiences

80 ms

title.jpg

title.jpg

428 ms

kentei.gif

kentei.gif

262 ms

top_img.png

top_img.png

674 ms

top_rainbow.jpg

top_rainbow.jpg

261 ms

exm_app.png

exm_app.png

419 ms

bn_tosukei.jpg

bn_tosukei.jpg

260 ms

bn_gouhi.jpg

bn_gouhi.jpg

418 ms

bn_mem.jpg

bn_mem.jpg

410 ms

bn_press.jpg

bn_press.jpg

408 ms

bn_chie.jpg

bn_chie.jpg

531 ms

bn_skai.jpg

bn_skai.jpg

529 ms

bn_sales.jpg

bn_sales.jpg

555 ms

card2.jpg

card2.jpg

558 ms

card3.jpg

card3.jpg

558 ms

card4.jpg

card4.jpg

696 ms

bn_crpi.jpg

bn_crpi.jpg

697 ms

partner.gif

partner.gif

721 ms

l1bn.jpg

l1bn.jpg

891 ms

BQS-BusinessQualityScore.png

BQS-BusinessQualityScore.png

725 ms

DRONE-LEAGUE.png

DRONE-LEAGUE.png

825 ms

DPS.png

DPS.png

859 ms

footer-up.gif

footer-up.gif

864 ms

footer-img.gif

footer-img.gif

885 ms

sdk.js

sdk.js

241 ms

sdk.js

sdk.js

26 ms

72 ms

phone.css

phone.css

170 ms

seal.cgi

seal.cgi

6224 ms

page.php

page.php

49 ms

170 ms

Accessibility Review

drone-kentei.com accessibility score

46

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

drone-kentei.com best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

drone-kentei.com SEO score

90

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

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

    N/A

  • 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 neither this language nor any other was claimed in <html> or <meta> tags. 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

drone-kentei.com

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: