Tools & Wizards About Us
jarl.org screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

jarl.org

一般社団法人　日本アマチュア無線連盟

Page Load Speed

4.7 sec in total

First Response

593 ms

Resources Loaded

4 sec

Page Rendered

155 ms

jarl.org screenshot

About Website

Visit jarl.org now to see the best up-to-date Jarl content for Japan and also check out these interesting facts you probably never knew about jarl.org

一般社団法人　日本アマチュア無線連盟 | 無線 | アマチュア無線

Visit jarl.org

Key Findings

We analyzed Jarl.org page load time and found that the first response time was 593 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

jarl.org performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.18

67/100

15%

TTI (Time to Interactive)

Value6.8 s

55/100

10%

Network Requests Diagram

jarl.org

593 ms

jarl.org

713 ms

style-1.css

178 ms

jquery.min.js

701 ms

analytics.js

525 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 74% of them (32 requests) were addressed to the original Jarl.org, 14% (6 requests) were made to Google.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Jarl.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 147.1 kB (10%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jarl.org main page is 1.4 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. 45% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 15.5 kB

  • Original 22.4 kB
  • After minification 22.1 kB
  • After compression 6.9 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 15.5 kB or 69% of the original size.

Image Optimization

-5%

Potential reduce by 55.8 kB

  • Original 1.1 MB
  • After minification 1.1 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. Jarl images are well optimized though.

JavaScript Optimization

-23%

Potential reduce by 63.1 kB

  • Original 271.3 kB
  • After minification 271.3 kB
  • After compression 208.2 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 63.1 kB or 23% of the original size.

CSS Optimization

-57%

Potential reduce by 12.7 kB

  • Original 22.3 kB
  • After minification 19.5 kB
  • After compression 9.6 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. Jarl.org needs all CSS files to be minified and compressed as it can save up to 12.7 kB or 57% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (17%)

Requests Now

41

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jarl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

jarl.org

jarl.org

593 ms

jarl.org

jarl.org

713 ms

style-1.css

style-1.css

178 ms

jquery.min.js

jquery.min.js

701 ms

analytics.js

analytics.js

525 ms

responsiveslides.min.js

responsiveslides.min.js

529 ms

analytics.js

analytics.js

66 ms

logo-index.jpg

logo-index.jpg

199 ms

rocket-icon_32x32px.png

rocket-icon_32x32px.png

198 ms

favorite-icon_32x32px.png

favorite-icon_32x32px.png

199 ms

zoom-in-icon_32x32px.png

zoom-in-icon_32x32px.png

371 ms

paperclip-icon_32x32px.png

paperclip-icon_32x32px.png

374 ms

globe-icon_32x32px.png

globe-icon_32x32px.png

390 ms

jet-icon_32x32px.png

jet-icon_32x32px.png

374 ms

top_1.jpg

top_1.jpg

1073 ms

top_2.jpg

top_2.jpg

1259 ms

top_3.jpg

top_3.jpg

551 ms

top_4.jpg

top_4.jpg

1076 ms

JN_2024summer.jpg

JN_2024summer.jpg

959 ms

hamfair2024.png

hamfair2024.png

1376 ms

taikenunyou.png

taikenunyou.png

731 ms

YAESU_Banner_JARL_animation_Ver4.gif

YAESU_Banner_JARL_animation_Ver4.gif

908 ms

QCQbanner-A_240417.gif

QCQbanner-A_240417.gif

1440 ms

kokanet.gif

kokanet.gif

1150 ms

%E3%83%90%E3%83%8A%E3%83%BCYouTube1.jpg

%E3%83%90%E3%83%8A%E3%83%BCYouTube1.jpg

1250 ms

banner_jard.gif

banner_jard.gif

1252 ms

jard-hosho.jpg

jard-hosho.jpg

1341 ms

cqham-2.gif

cqham-2.gif

1429 ms

QCQbanner-B_240417.gif

QCQbanner-B_240417.gif

1957 ms

footerlogo.png

footerlogo.png

1433 ms

jard_spurious.gif

jard_spurious.gif

1532 ms

denpa_soumu_banner.gif

denpa_soumu_banner.gif

1574 ms

giteki.jpg

giteki.jpg

1605 ms

cse.js

cse.js

96 ms

collect

collect

13 ms

js

js

106 ms

cse_element__ja.js

cse_element__ja.js

24 ms

default+ja.css

default+ja.css

75 ms

default.css

default.css

77 ms

async-ads.js

async-ads.js

107 ms

branding.png

branding.png

82 ms

clear.png

clear.png

73 ms

nav_logo114.png

nav_logo114.png

74 ms

Accessibility Review

jarl.org 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.

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

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

jarl.org best practices score

83

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

SEO Factors

jarl.org SEO score

89

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

Links do not have descriptive text

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

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jarl.org 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 Jarl.org 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

jarl.org

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