Access dandoweb.com. 団藤保晴の「インターネットで読み解く!」

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

93/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value4.8 s

66/100

10%

TBT (Total Blocking Time)

Value1,810 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.211

59/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

dandoweb.com

910 ms

js

77 ms

index.cgi

528 ms

english-s.gif

350 ms

ICO_080.GIF

349 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 11% of them (8 requests) were addressed to the original Dandoweb.com, 17% (13 requests) were made to Googleads.g.doubleclick.net and 17% (13 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Omt.shinobi.jp.

Content Size

918.7 kB

After Optimization

513.1 kB

In fact, the total size of Dandoweb.com main page is 918.7 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. 65% of websites need less resources to load. Javascripts take 574.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 223.7 kB

Original 285.1 kB
After minification 266.5 kB
After compression 61.4 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. 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 223.7 kB or 78% of the original size.

Image Optimization

-19%

Potential reduce by 6.0 kB

Original 32.3 kB
After minification 26.2 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. Obviously, Dandoweb needs image optimization as it can save up to 6.0 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 153.3 kB

Original 574.7 kB
After minification 574.7 kB
After compression 421.4 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 153.3 kB or 27% of the original size.

CSS Optimization

-85%

Potential reduce by 22.5 kB

Original 26.6 kB
After minification 22.0 kB
After compression 4.1 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. Dandoweb.com needs all CSS files to be minified and compressed as it can save up to 22.5 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dandoweb. 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 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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

High

Browser errors were logged to the console

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

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

N/A
Encoding

SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dandoweb.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 Dandoweb.com main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

dandoweb.com

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

団藤保晴の「インターネットで読み解く!」

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

dandoweb.com

js

index.cgi

english-s.gif

ICO_080.GIF

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

dandoweb.com

js

index.cgi

english-s.gif

ICO_080.GIF

yomitoku.gif

ball5.gif

ball1.gif

e2d9fc7e199c504ec1d368f40ef86339

adsbygoogle.js

Logo_25wht.gif

show_ads.js

english-t.gif

ninja_onetag.css

tsumugi

pv

show_ads_impl.js

fire

ga.js

tweet_button.html

button-only@2x.png

widgets.js

bookmark_button.js

like.php

collect

ga-audiences

embeds

zrt_lookup.html

ads

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

ads

ads

ads

ads

ads

ads

ads

TttXWwYVW0v.js

FEppCFCt76d.png

settings

gen_204

pixel

7854330143177724536