Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

kombu.or.jp

こんぶネット - 昆布の情報たくさん!昆布ポータルサイト

Page Load Speed

5.5 sec in total

First Response

762 ms

Resources Loaded

4.4 sec

Page Rendered

312 ms

kombu.or.jp screenshot

About Website

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

昆布出汁の取り方やレシピなど、昆布の情報たくさんの昆布ポータルサイト

Visit kombu.or.jp

Key Findings

We analyzed Kombu.or.jp page load time and found that the first response time was 762 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

kombu.or.jp performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value11,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.359

30/100

15%

TTI (Time to Interactive)

Value21.8 s

1/100

10%

Network Requests Diagram

kombu.or.jp

762 ms

rollover.js

353 ms

jsapi

20 ms

feed.js

374 ms

jquery.js

743 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 86% of them (64 requests) were addressed to the original Kombu.or.jp, 7% (5 requests) were made to Google.com and 3% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Kombu.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 105.6 kB (10%)

Content Size

1.0 MB

After Optimization

907.9 kB

In fact, the total size of Kombu.or.jp main page is 1.0 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. 50% of websites need less resources to load. Images take 862.8 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 19.4 kB

  • Original 26.4 kB
  • After minification 23.9 kB
  • After compression 6.9 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 19.4 kB or 74% of the original size.

Image Optimization

-1%

Potential reduce by 6.8 kB

  • Original 862.8 kB
  • After minification 856.0 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. Kombu images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 45.7 kB

  • Original 81.6 kB
  • After minification 78.5 kB
  • After compression 35.9 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 45.7 kB or 56% of the original size.

CSS Optimization

-79%

Potential reduce by 33.7 kB

  • Original 42.8 kB
  • After minification 38.5 kB
  • After compression 9.1 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. Kombu.or.jp needs all CSS files to be minified and compressed as it can save up to 33.7 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (28%)

Requests Now

72

After Optimization

52

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kombu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

kombu.or.jp accessibility score

60

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

kombu.or.jp best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

kombu.or.jp SEO score

92

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kombu.or.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 Kombu.or.jp 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

Open Graph data is detected on the main page of Kombu. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: