Report Summary

  • 43

    Performance

    Renders faster than
    64% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

siz-road.or.jp

静岡県道路公社 │ 伊豆・箱根スカイライン有料道路情報

Page Load Speed

6.4 sec in total

First Response

1.8 sec

Resources Loaded

4.4 sec

Page Rendered

195 ms

siz-road.or.jp screenshot

About Website

Welcome to siz-road.or.jp homepage info - get ready to check Siz Road best content for Japan right away, or after learning these important things about siz-road.or.jp

静岡県道路公社の交通情報サイト「伊豆・箱根スカイライン」は、箱根・伊豆への玄関口へのアクセス道路。富士山を見ながらドライブできる観光情報やライブカメラ画像はもちろん、交通道路情報、渋滞情報をお届けします。

Visit siz-road.or.jp

Key Findings

We analyzed Siz-road.or.jp page load time and found that the first response time was 1.8 sec and then it took 4.6 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

siz-road.or.jp performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value29.9 s

0/100

25%

SI (Speed Index)

Value9.3 s

12/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value8.2 s

40/100

10%

Network Requests Diagram

siz-road.or.jp

1799 ms

wp-emoji-release.min.js

637 ms

styles.css

331 ms

jquery.js

1187 ms

jquery-migrate.min.js

512 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 93% of them (52 requests) were addressed to the original Siz-road.or.jp, 4% (2 requests) were made to Stats.g.doubleclick.net and 2% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Siz-road.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 245.9 kB (22%)

Content Size

1.1 MB

After Optimization

861.7 kB

In fact, the total size of Siz-road.or.jp main page is 1.1 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. 40% of websites need less resources to load. Images take 767.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 24.4 kB

  • Original 30.5 kB
  • After minification 25.9 kB
  • After compression 6.0 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 4.5 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 24.4 kB or 80% of the original size.

Image Optimization

-3%

Potential reduce by 20.1 kB

  • Original 767.4 kB
  • After minification 747.3 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. Siz Road images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 169.9 kB

  • Original 272.4 kB
  • After minification 265.8 kB
  • After compression 102.5 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 169.9 kB or 62% of the original size.

CSS Optimization

-84%

Potential reduce by 31.4 kB

  • Original 37.2 kB
  • After minification 26.4 kB
  • After compression 5.8 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. Siz-road.or.jp needs all CSS files to be minified and compressed as it can save up to 31.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (40%)

Requests Now

55

After Optimization

33

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Siz Road. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

siz-road.or.jp accessibility score

71

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

Links do not have a discernible name

Best Practices

siz-road.or.jp 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

siz-road.or.jp SEO score

80

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

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 Siz-road.or.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 Siz-road.or.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 description is not detected on the main page of Siz Road. 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: