Report Summary

  • 60

    Performance

    Renders faster than
    76% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 50% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

mail.yahoo.co.jp

指定されたページは存在しません - Yahoo!メール

Page Load Speed

6.3 sec in total

First Response

556 ms

Resources Loaded

5.6 sec

Page Rendered

114 ms

mail.yahoo.co.jp screenshot

About Website

Click here to check amazing Mail Yahoo content for Japan. Otherwise, check out these important facts you probably never knew about mail.yahoo.co.jp

指定されたページは存在しません

Visit mail.yahoo.co.jp

Key Findings

We analyzed Mail.yahoo.co.jp page load time and found that the first response time was 556 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

mail.yahoo.co.jp performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.086

93/100

15%

TTI (Time to Interactive)

Value7.7 s

45/100

10%

Network Requests Diagram

mail.yahoo.co.jp

556 ms

login

1303 ms

login-min.css

1001 ms

flash-min.js

1028 ms

yj_r_34_2x.png

1037 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 6% of them (1 request) were addressed to the original Mail.yahoo.co.jp, 69% (11 requests) were made to S.yimg.jp and 13% (2 requests) were made to B5.yahoo.co.jp. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Yeas.yahoo.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 103.3 kB (52%)

Content Size

200.5 kB

After Optimization

97.2 kB

In fact, the total size of Mail.yahoo.co.jp main page is 200.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 78.8 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 18.7 kB

  • Original 26.6 kB
  • After minification 25.4 kB
  • After compression 7.9 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. 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 18.7 kB or 70% of the original size.

Image Optimization

-0%

Potential reduce by 28 B

  • Original 55.1 kB
  • After minification 55.0 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. Mail Yahoo images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 51.6 kB

  • Original 78.8 kB
  • After minification 77.9 kB
  • After compression 27.2 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 51.6 kB or 66% of the original size.

CSS Optimization

-82%

Potential reduce by 33.0 kB

  • Original 40.1 kB
  • After minification 40.0 kB
  • After compression 7.1 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. Mail.yahoo.co.jp needs all CSS files to be minified and compressed as it can save up to 33.0 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (79%)

Requests Now

14

After Optimization

3

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mail Yahoo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

mail.yahoo.co.jp accessibility score

80

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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

mail.yahoo.co.jp best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

mail.yahoo.co.jp SEO score

83

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mail.yahoo.co.jp 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 Mail.yahoo.co.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 Mail Yahoo. 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: