Access tobu-bus.com. 東武バスOn-Line

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value19.9 s

0/100

10%

TBT (Total Blocking Time)

Value260 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.802

5/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

tobu-bus.com

523 ms

index.html

540 ms

index.php

1576 ms

gtm.js

77 ms

base.css

838 ms

Our browser made a total of 136 requests to load all elements on the main page. We found that 91% of them (124 requests) were addressed to the original Tobu-bus.com, 2% (3 requests) were made to Use.fontawesome.com and 2% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (5.2 sec) belongs to the original domain Tobu-bus.com.

Content Size

2.1 MB

After Optimization

1.6 MB

In fact, the total size of Tobu-bus.com main page is 2.1 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 64.9 kB

Original 78.3 kB
After minification 60.5 kB
After compression 13.4 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 17.8 kB, which is 23% 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 64.9 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 27.8 kB

Original 1.4 MB
After minification 1.4 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. Tobu Bus images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 282.0 kB

Original 426.3 kB
After minification 386.2 kB
After compression 144.3 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 282.0 kB or 66% of the original size.

CSS Optimization

-79%

Potential reduce by 82.6 kB

Original 104.3 kB
After minification 84.3 kB
After compression 21.7 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. Tobu-bus.com needs all CSS files to be minified and compressed as it can save up to 82.6 kB or 79% of the original size.

Requests Now

130

After Optimization

118

The browser has sent 130 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tobu Bus. 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 as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document doesn't use 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 Tobu-bus.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 Tobu-bus.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

tobu-bus.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

東武バスOn-Line

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

tobu-bus.com

index.html

index.php

gtm.js

base.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

tobu-bus.com

index.html

index.php

gtm.js

base.css

jquery.mCustomScrollbar.css

jquery-1.11.1.min.js

wideslider.js

jquery.mCustomScrollbar.js

jquery.carouFredSel.js

common.js

top.js

all.css

smartphone_banner.js

brand

brandjs.js

js

analytics.js

collect

navitime.js

jquery.mousewheel.min.js

imgLogo.gif

txtGnavi01.gif

bgGnaviChild.gif

iconGnaviC01_off.gif

iconGnaviC02_off.gif

iconGnaviC04_off.gif

iconGnaviC03_off.gif

iconGnaviC05_off.gif

iconGnaviC06_off.gif

iconGnaviC08_off.gif

iconGnaviC07_off.gif

iconGnaviC09_off.gif

txtGnavi02.gif

txtGnavi03.gif

txtGnavi04.gif

txtGnavi06.gif

txtGnavi05.gif

txtGnavi07.gif

tNavTit.png

recruit02.jpg

topbanner_20231116.jpg

topbanner_20240318.jpg