Tools & Wizards About Us
openstack.ithome.com.tw screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

openstack.ithome.com.tw

iThome | iThome Online 是臺灣第一個網路原生報，提供IT產業即時新聞、企業IT產品報導與測試、技術專題、IT應用報導、IT書訊，以及面向豐富的名家專欄

Page Load Speed

5 sec in total

First Response

1.1 sec

Resources Loaded

3.4 sec

Page Rendered

409 ms

openstack.ithome.com.tw screenshot

About Website

Welcome to openstack.ithome.com.tw homepage info - get ready to check Openstack IThome best content for Taiwan right away, or after learning these important things about openstack.ithome.com.tw

滿足所有角色需求的開源雲技術盛會：40場專題演講、來自世界各國的產業鏈代表性廠商、超過千人的盛況。開發者、商業應用者，以及解決方案提供者組成的完整架構技術盛會；加上OpenStack Foundation代表、卓越技術貢獻者，以及大家最關注的 User Stories！關注雲端科技動向與開源議題的您，勢必不容錯過本年度盛會！

Visit openstack.ithome.com.tw

Key Findings

We analyzed Openstack.ithome.com.tw page load time and found that the first response time was 1.1 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

openstack.ithome.com.tw performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.5 s

0/100

25%

SI (Speed Index)

Value13.9 s

1/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.552

13/100

15%

TTI (Time to Interactive)

Value12.8 s

13/100

10%

Network Requests Diagram

openstack.ithome.com.tw

1116 ms

bootstrap.min.css

39 ms

font-awesome.min.css

54 ms

effect1.css

148 ms

style.css

294 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 33% of them (19 requests) were addressed to the original Openstack.ithome.com.tw, 14% (8 requests) were made to Seminar.ithome.com.tw and 9% (5 requests) were made to Gstatic.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Confapi.ithome.com.tw.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (55%)

Content Size

2.0 MB

After Optimization

896.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Openstack.ithome.com.tw main page is 2.0 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. 55% of websites need less resources to load. Javascripts take 827.2 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 30.7 kB

  • Original 36.2 kB
  • After minification 17.5 kB
  • After compression 5.6 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 18.8 kB, which is 52% 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 30.7 kB or 85% of the original size.

Image Optimization

-6%

Potential reduce by 33.6 kB

  • Original 532.4 kB
  • After minification 498.8 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. Openstack IThome images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 539.4 kB

  • Original 827.2 kB
  • After minification 811.8 kB
  • After compression 287.8 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 539.4 kB or 65% of the original size.

CSS Optimization

-83%

Potential reduce by 504.7 kB

  • Original 609.5 kB
  • After minification 589.3 kB
  • After compression 104.8 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. Openstack.ithome.com.tw needs all CSS files to be minified and compressed as it can save up to 504.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (66%)

Requests Now

53

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Openstack IThome. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

openstack.ithome.com.tw

openstack.ithome.com.tw

1116 ms

bootstrap.min.css

bootstrap.min.css

39 ms

font-awesome.min.css

font-awesome.min.css

54 ms

effect1.css

effect1.css

148 ms

style.css

style.css

294 ms

js

js

73 ms

jquery.min.js

jquery.min.js

33 ms

vue.js

vue.js

60 ms

bootstrap.min.js

bootstrap.min.js

24 ms

modernizr.custom.js

modernizr.custom.js

312 ms

classie.js

classie.js

332 ms

pathLoader.js

pathLoader.js

333 ms

main.js

main.js

332 ms

jquery.lwtCountdown-1.0.js

jquery.lwtCountdown-1.0.js

333 ms

jquery.tubular.1.0.js

jquery.tubular.1.0.js

439 ms

index.js

index.js

438 ms

app.js

app.js

451 ms

logo.png

logo.png

753 ms

header-logo.png

header-logo.png

596 ms

intro-icon.png

intro-icon.png

576 ms

staticmap.png

staticmap.png

867 ms

2016kv.jpg

2016kv.jpg

1453 ms

trafficbg2.jpg

trafficbg2.jpg

737 ms

footerpic.jpg

footerpic.jpg

562 ms

footerpic_left.jpg

footerpic_left.jpg

446 ms

pre_signup.html

pre_signup.html

305 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

30 ms

iframe_api

iframe_api

36 ms

analytics.js

analytics.js

22 ms

sponsorlist.jsonp

sponsorlist.jsonp

1828 ms

collect

collect

15 ms

www-widgetapi.js

www-widgetapi.js

5 ms

1JzzBOAjfEk

1JzzBOAjfEk

86 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

48 ms

www-embed-player.js

www-embed-player.js

68 ms

bootstrap.min.css

bootstrap.min.css

308 ms

font-awesome.min.css

font-awesome.min.css

299 ms

style.css

style.css

303 ms

live-register.js

live-register.js

313 ms

api.js

api.js

122 ms

jquery.min.js

jquery.min.js

922 ms

bootstrap.min.js

bootstrap.min.js

314 ms

app.js

app.js

442 ms

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js

27 ms

ad_status.js

ad_status.js

60 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

61 ms

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

65 ms

jquery.min.js

jquery.min.js

8 ms

recaptcha__en.js

recaptcha__en.js

37 ms

jquery-ui.css

jquery-ui.css

10 ms

jquery-ui.min.js

jquery-ui.min.js

20 ms

fallback

fallback

37 ms

fallback__ltr.css

fallback__ltr.css

5 ms

payload

payload

26 ms

css

css

58 ms

logo_48.png

logo_48.png

6 ms

refresh.png

refresh.png

6 ms

audio.png

audio.png

12 ms

Accessibility Review

openstack.ithome.com.tw accessibility score

89

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

Links do not have a discernible name

Best Practices

openstack.ithome.com.tw best practices score

58

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

Browser errors were logged to the console

SEO Factors

openstack.ithome.com.tw SEO score

83

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

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

    ZH

  • Encoding

    UTF-8

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

openstack.ithome.com.tw

Open Graph description is not detected on the main page of Openstack IThome. 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: