Access navitokyo.com. 東京都の地域情報サイト - 東京都の事業者情報を無料で掲載【なび東京】

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value1,010 ms

27/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

navitokyo.com

403 ms

navitokyo.com

2563 ms

bootstrap-reboot.min.css

67 ms

font-awesome.min.css

78 ms

style_responsive.css

206 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 54% of them (44 requests) were addressed to the original Navitokyo.com, 6% (5 requests) were made to Cdn.ampproject.org and 4% (3 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Navitokyo.com.

Content Size

1.9 MB

After Optimization

1.7 MB

In fact, the total size of Navitokyo.com main page is 1.9 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. 70% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 77.9 kB

Original 98.2 kB
After minification 78.2 kB
After compression 20.3 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 20.0 kB, which is 20% 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 77.9 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 77.6 kB

Original 1.2 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. Navitokyo images are well optimized though.

JavaScript Optimization

-20%

Potential reduce by 129.2 kB

Original 657.8 kB
After minification 657.8 kB
After compression 528.6 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 129.2 kB or 20% of the original size.

CSS Optimization

-39%

Potential reduce by 12.5 kB

Original 32.1 kB
After minification 32.1 kB
After compression 19.6 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. Navitokyo.com needs all CSS files to be minified and compressed as it can save up to 12.5 kB or 39% of the original size.

Requests Now

After Optimization

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Navitokyo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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 the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 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 Navitokyo.com 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 Navitokyo.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

navitokyo.com

Open Graph data is detected on the main page of Navitokyo. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

東京都の地域情報サイト - 東京都の事業者情報を無料で掲載【なび東京】

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

navitokyo.com

navitokyo.com

bootstrap-reboot.min.css

font-awesome.min.css

style_responsive.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

navitokyo.com

navitokyo.com

bootstrap-reboot.min.css

font-awesome.min.css

style_responsive.css

adsbygoogle.js

gpt.js

swiper.min.css

jquery.mmenu.all.min.css

jquery_3.3.1.min.js

swiper.min.js

jquery.mmenu.min.all.js

jquery.sticky_1.0.3.min.js

navihistory.min.js

widgets.js

sdk.js

js

pubads_impl.js

slotcar_library.js

show_ads_impl.js

navitokyo150x50.gif

glyphish_icon-magnify.png

vline.png

jishabanner.gif

famfamfam_icon-chart_bar.png

famfamfam_icon-zoom.png

icon-kurashi.png

icon-biyou.png

icon-kaimono.png

icon-taberu.png

icon-asobu.png

icon-manabu.png

icon-sumai.png

icon-iryou.png

icon-kenko.png

icon-fukushi.png

icon-business.png

icon-koukyo.png

famfamfam_icon-heart.png

111185_1713340214481.jpg

111128_1713062093691.jpg

famfamfam_icon-vcard.png

199_1529727820910.jpg