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ncs.epa.gov.tw screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 62

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

ncs.epa.gov.tw

預設主機轉址程式

Page Load Speed

4.6 sec in total

First Response

1.3 sec

Resources Loaded

3.2 sec

Page Rendered

131 ms

ncs.epa.gov.tw screenshot

About Website

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Key Findings

We analyzed Ncs.epa.gov.tw page load time and found that the first response time was 1.3 sec and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

ncs.epa.gov.tw performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value1,070 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value14.7 s

9/100

10%

Network Requests Diagram

ncs.epa.gov.tw

1295 ms

Ganalytics.js

421 ms

analytics.js

22 ms

leftbtn02.gif

223 ms

morebtn.gif

216 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 85% of them (28 requests) were addressed to the original Ncs.epa.gov.tw, 6% (2 requests) were made to Google-analytics.com and 6% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Ncs.epa.gov.tw.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.0 kB (36%)

Content Size

271.3 kB

After Optimization

173.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Ncs.epa.gov.tw main page is 271.3 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. 15% of websites need less resources to load. Images take 190.0 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 22.6 kB

  • Original 28.0 kB
  • After minification 19.5 kB
  • After compression 5.4 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. This page needs HTML code to be minified as it can gain 8.5 kB, which is 30% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 22.6 kB or 81% of the original size.

Image Optimization

-23%

Potential reduce by 43.3 kB

  • Original 190.0 kB
  • After minification 146.7 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. Obviously, Ncs Epa needs image optimization as it can save up to 43.3 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 32.1 kB

  • Original 53.3 kB
  • After minification 53.3 kB
  • After compression 21.2 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 32.1 kB or 60% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (19%)

Requests Now

31

After Optimization

25

  • AJAX
  • Images
  • JavaScript

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ncs Epa. 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.

Network Requests Diagram

ncs.epa.gov.tw

ncs.epa.gov.tw

1295 ms

Ganalytics.js

Ganalytics.js

421 ms

analytics.js

analytics.js

22 ms

leftbtn02.gif

leftbtn02.gif

223 ms

morebtn.gif

morebtn.gif

216 ms

arr.gif

arr.gif

424 ms

KnowsUs_A.gif

KnowsUs_A.gif

425 ms

NoiseControl_A.gif

NoiseControl_A.gif

429 ms

EPRoad_A.gif

EPRoad_A.gif

429 ms

Energy_A.gif

Energy_A.gif

646 ms

NoisePollutionLaws_A.gif

NoisePollutionLaws_A.gif

434 ms

NoiseHundredBranches_A.gif

NoiseHundredBranches_A.gif

622 ms

bg.png

bg.png

1863 ms

newbg03.gif

newbg03.gif

634 ms

search.html

search.html

635 ms

Counter_Home.asp

Counter_Home.asp

682 ms

MVNS.gif

MVNS.gif

1021 ms

111025.jpg

111025.jpg

1047 ms

NoiseSample_A.gif

NoiseSample_A.gif

842 ms

TranquilMarking.gif

TranquilMarking.gif

1058 ms

TranquilCity01_A.gif

TranquilCity01_A.gif

891 ms

Firecrackers_1.gif

Firecrackers_1.gif

1053 ms

END-33.png

END-33.png

1103 ms

END-34a.png

END-34a.png

1228 ms

a.jpg

a.jpg

1262 ms

collect

collect

14 ms

brand

brand

16 ms

Search_ico_8.gif

Search_ico_8.gif

636 ms

brand

brand

64 ms

8.gif

8.gif

595 ms

1.gif

1.gif

638 ms

6.gif

6.gif

760 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

29 ms

Accessibility Review

ncs.epa.gov.tw 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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

ncs.epa.gov.tw best practices score

62

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

ncs.epa.gov.tw SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    ZH

  • Encoding

    BIG5

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ncs.epa.gov.tw 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 Chinese. Our system also found out that Ncs.epa.gov.tw main page’s claimed encoding is big5. 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

ncs.epa.gov.tw

Open Graph description is not detected on the main page of Ncs Epa. 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: