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leaf25.com screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    58% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

leaf25.com

Page Load Speed

1.9 sec in total

First Response

256 ms

Resources Loaded

982 ms

Page Rendered

621 ms

leaf25.com screenshot

About Website

Click here to check amazing Leaf 25 content. Otherwise, check out these important facts you probably never knew about leaf25.com

私の中古車にはカーナビが付いています。頻繁に自動車を使う私にとってカーナビは自動車と同じ位大切なものです。

Visit leaf25.com

Key Findings

We analyzed Leaf25.com page load time and found that the first response time was 256 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

leaf25.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value4.9 s

64/100

10%

TBT (Total Blocking Time)

Value4,060 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.079

94/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

Network Requests Diagram

leaf25.com

256 ms

style.css

40 ms

bookmark_button.js

323 ms

plusone.js

138 ms

widgets.js

17 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 19% of them (4 requests) were addressed to the original Leaf25.com, 38% (8 requests) were made to Apis.google.com and 14% (3 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (396 ms) relates to the external source Cdn.api.b.hatena.ne.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 39.6 kB (70%)

Content Size

56.5 kB

After Optimization

16.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Leaf25.com main page is 56.5 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. 40% of websites need less resources to load. Javascripts take 41.5 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 6.2 kB

  • Original 10.2 kB
  • After minification 10.1 kB
  • After compression 4.0 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. 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 6.2 kB or 61% of the original size.

Image Optimization

-52%

Potential reduce by 812 B

  • Original 1.6 kB
  • After minification 744 B

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, Leaf 25 needs image optimization as it can save up to 812 B or 52% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 30.4 kB

  • Original 41.5 kB
  • After minification 32.0 kB
  • After compression 11.1 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 30.4 kB or 73% of the original size.

CSS Optimization

-69%

Potential reduce by 2.2 kB

  • Original 3.2 kB
  • After minification 2.9 kB
  • After compression 1.0 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. Leaf25.com needs all CSS files to be minified and compressed as it can save up to 2.2 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (50%)

Requests Now

20

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leaf 25. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

leaf25.com

leaf25.com

256 ms

style.css

style.css

40 ms

bookmark_button.js

bookmark_button.js

323 ms

plusone.js

plusone.js

138 ms

widgets.js

widgets.js

17 ms

slash.jpg

slash.jpg

60 ms

wrap_image001.jpg

wrap_image001.jpg

246 ms

button-only.gif

button-only.gif

342 ms

button.0308b81ff1714e446f674b5b9793f2cd.js

button.0308b81ff1714e446f674b5b9793f2cd.js

15 ms

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.ja.html

tweet_button.b9740740e0bcf9b0657c5b11bd4388da.ja.html

67 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

8 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

24 ms

fastbutton

fastbutton

75 ms

postmessageRelay

postmessageRelay

68 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

18 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

17 ms

3193398744-postmessagerelay.js

3193398744-postmessagerelay.js

31 ms

rpc:shindig_random.js

rpc:shindig_random.js

47 ms

jot

jot

94 ms

396 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

4 ms

Accessibility Review

leaf25.com accessibility score

89

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

Links do not have a discernible name

Best Practices

leaf25.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

leaf25.com SEO score

92

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leaf25.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Japanese. Our system also found out that Leaf25.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

leaf25.com

Open Graph description is not detected on the main page of Leaf 25. 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: