Report Summary

  • 83

    Performance

    Renders faster than
    88% of other websites

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

jacon.biz

중앙제어기

Page Load Speed

49.1 sec in total

First Response

7 sec

Resources Loaded

41.6 sec

Page Rendered

539 ms

jacon.biz screenshot

About Website

Welcome to jacon.biz homepage info - get ready to check Jacon best content right away, or after learning these important things about jacon.biz

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Key Findings

We analyzed Jacon.biz page load time and found that the first response time was 7 sec and then it took 42.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 6 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

jacon.biz performance score

83

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

76/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.216

58/100

15%

TTI (Time to Interactive)

Value1.6 s

100/100

10%

Network Requests Diagram

jacon.biz

6984 ms

logo.gif

548 ms

ico_tip.gif

527 ms

search_str.gif

525 ms

search_submit.gif

544 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 98% of them (98 requests) were addressed to the original Jacon.biz, 2% (2 requests) were made to Errdoc.gabia.net. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Jacon.biz.

Page Optimization Overview & Recommendations

Page size can be reduced by 323.7 kB (17%)

Content Size

1.9 MB

After Optimization

1.6 MB

In fact, the total size of Jacon.biz main page is 1.9 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. 20% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 84.2 kB

  • Original 98.3 kB
  • After minification 95.3 kB
  • After compression 14.1 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 84.2 kB or 86% of the original size.

Image Optimization

-13%

Potential reduce by 239.5 kB

  • Original 1.8 MB
  • After minification 1.6 MB

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, Jacon needs image optimization as it can save up to 239.5 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 21 (23%)

Requests Now

91

After Optimization

70

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jacon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

jacon.biz accessibility score

33

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

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

jacon.biz best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

jacon.biz SEO score

54

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

Language and Encoding

  • Language Detected

    KO

  • Language Claimed

    N/A

  • Encoding

    EUC-KR

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jacon.biz can be misinterpreted by Google and other search engines. Our service has detected that Korean 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 Jacon.biz main page’s claimed encoding is euc-kr. 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 description is not detected on the main page of Jacon. 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: