Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

t-sekikun.jp

アニメ「となりの関くん」公式サイト

Page Load Speed

6.1 sec in total

First Response

525 ms

Resources Loaded

5.5 sec

Page Rendered

145 ms

t-sekikun.jp screenshot

About Website

Click here to check amazing T Sekikun content for Japan. Otherwise, check out these important facts you probably never knew about t-sekikun.jp

累計250万部突破!!の大人気コミック「となりの関くん」のアニメ化が決定しました!!!続報が入り次第当サイトにて逐一お伝えしていきます。お楽しみに!

Visit t-sekikun.jp

Key Findings

We analyzed T-sekikun.jp page load time and found that the first response time was 525 ms and then it took 5.6 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

t-sekikun.jp performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value1,700 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.4 s

15/100

10%

Network Requests Diagram

t-sekikun.jp

525 ms

style.css

174 ms

top.css

352 ms

css

26 ms

jquery-1.10.2.min.js

708 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 40% of them (34 requests) were addressed to the original T-sekikun.jp, 20% (17 requests) were made to Script.mixi.net and 7% (6 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Script.mixi.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 114.9 kB (8%)

Content Size

1.5 MB

After Optimization

1.3 MB

In fact, the total size of T-sekikun.jp main page is 1.5 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. 60% of websites need less resources to load. Images take 821.8 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 19.2 kB

  • Original 26.6 kB
  • After minification 25.8 kB
  • After compression 7.4 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 19.2 kB or 72% of the original size.

Image Optimization

-1%

Potential reduce by 4.8 kB

  • Original 821.8 kB
  • After minification 817.0 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. T Sekikun images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 81.2 kB

  • Original 565.2 kB
  • After minification 562.5 kB
  • After compression 484.0 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 81.2 kB or 14% of the original size.

CSS Optimization

-22%

Potential reduce by 9.8 kB

  • Original 44.4 kB
  • After minification 42.0 kB
  • After compression 34.7 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. T-sekikun.jp needs all CSS files to be minified and compressed as it can save up to 9.8 kB or 22% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (62%)

Requests Now

79

After Optimization

30

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of T Sekikun. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

t-sekikun.jp accessibility score

91

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.

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

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

Best Practices

t-sekikun.jp 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

High

Page has valid source maps

SEO Factors

t-sekikun.jp SEO score

100

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise T-sekikun.jp 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 T-sekikun.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 data is detected on the main page of T Sekikun. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: