Tools & Wizards About Us

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

rotco.jp

rotco.jp

Page Load Speed

18.3 sec in total

First Response

739 ms

Resources Loaded

16.9 sec

Page Rendered

674 ms

About Website

Click here to check amazing Rotco content for Japan. Otherwise, check out these important facts you probably never knew about rotco.jp

さまざまなジャンルのRSS更新速報とリンクをまとめたアンテナサイト。ログインするとマイアンテナがつくれます。

Visit rotco.jp

Key Findings

We analyzed Rotco.jp page load time and found that the first response time was 739 ms and then it took 17.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

rotco.jp performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value750 ms

39/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value9.7 s

29/100

10%

Network Requests Diagram

rotco.jp

739 ms

style.css

216 ms

user.css

364 ms

meerkat.css

378 ms

dcbdfab7a2e3864497fc58330eab7952

722 ms

Our browser made a total of 193 requests to load all elements on the main page. We found that 9% of them (17 requests) were addressed to the original Rotco.jp, 7% (14 requests) were made to Aladdin.genieesspv.jp and 6% (12 requests) were made to Cs.gssprt.jp. The less responsive or slowest element that took the longest time to load (6.6 sec) belongs to the original domain Rotco.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 383.1 kB (59%)

Content Size

648.2 kB

After Optimization

265.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rotco.jp main page is 648.2 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. 35% of websites need less resources to load. Javascripts take 477.5 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 53.9 kB

  • Original 64.7 kB
  • After minification 64.0 kB
  • After compression 10.8 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 53.9 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 373 B

  • Original 92.3 kB
  • After minification 91.9 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. Rotco images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 318.2 kB

  • Original 477.5 kB
  • After minification 473.7 kB
  • After compression 159.2 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 318.2 kB or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 10.6 kB

  • Original 13.7 kB
  • After minification 10.4 kB
  • After compression 3.1 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. Rotco.jp needs all CSS files to be minified and compressed as it can save up to 10.6 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 149 (89%)

Requests Now

167

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 167 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rotco. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 50 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

rotco.jp accessibility score

70

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

rotco.jp best practices score

83

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

rotco.jp SEO score

86

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    EN

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rotco.jp can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Japanese language. Our system also found out that Rotco.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 Rotco. 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: