Tools & Wizards About Us
boat-license.net screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

boat-license.net

船舶免許更新とは？更新の流れ│全国ボート免許更新センター

Page Load Speed

5.1 sec in total

First Response

835 ms

Resources Loaded

4 sec

Page Rendered

341 ms

boat-license.net screenshot

About Website

Click here to check amazing Boat License content for Japan. Otherwise, check out these important facts you probably never knew about boat-license.net

船舶免許更新の予約方法と更新の流れについてのご案内です。船舶免許の更新講習は約90分間で身体検査も当日行います。

Visit boat-license.net

Key Findings

We analyzed Boat-license.net page load time and found that the first response time was 835 ms and then it took 4.3 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

boat-license.net performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

49/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.166

71/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

boat-license.net

835 ms

bootstrap.min.css

652 ms

font-awesome.min.css

505 ms

bootstrap-theme.css

347 ms

theme.css

512 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 94% of them (15 requests) were addressed to the original Boat-license.net, 6% (1 request) were made to Googleadservices.com. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Boat-license.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 293.5 kB (31%)

Content Size

958.8 kB

After Optimization

665.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Boat-license.net main page is 958.8 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. 20% of websites need less resources to load. Images take 590.2 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 20.7 kB

  • Original 24.6 kB
  • After minification 15.5 kB
  • After compression 3.9 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. This page needs HTML code to be minified as it can gain 9.1 kB, which is 37% 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 20.7 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 590.2 kB
  • After minification 590.2 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. Boat License images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 81.7 kB

  • Original 121.2 kB
  • After minification 121.2 kB
  • After compression 39.5 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 81.7 kB or 67% of the original size.

CSS Optimization

-86%

Potential reduce by 191.1 kB

  • Original 222.8 kB
  • After minification 177.9 kB
  • After compression 31.8 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. Boat-license.net needs all CSS files to be minified and compressed as it can save up to 191.1 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (27%)

Requests Now

15

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Boat License. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

boat-license.net

boat-license.net

835 ms

bootstrap.min.css

bootstrap.min.css

652 ms

font-awesome.min.css

font-awesome.min.css

505 ms

bootstrap-theme.css

bootstrap-theme.css

347 ms

theme.css

theme.css

512 ms

style.css

style.css

359 ms

header_logo1.png

header_logo1.png

603 ms

head-1.jpg

head-1.jpg

888 ms

tel.png

tel.png

902 ms

top1.png

top1.png

3261 ms

top1-sp.png

top1-sp.png

1190 ms

si-s1.png

si-s1.png

963 ms

conversion_async.js

conversion_async.js

19 ms

jquery.min.js

jquery.min.js

834 ms

bootstrap.min.js

bootstrap.min.js

915 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1201 ms

Accessibility Review

boat-license.net accessibility score

75

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

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

boat-license.net 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

boat-license.net SEO score

92

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

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 Boat-license.net 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 Boat-license.net 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

boat-license.net

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