Tools & Wizards About Us
jsconf.asia screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jsconf.asia

JSConf.Asia Singapore 2019

Page Load Speed

935 ms in total

First Response

81 ms

Resources Loaded

751 ms

Page Rendered

103 ms

jsconf.asia screenshot

About Website

Visit jsconf.asia now to see the best up-to-date JSConf content for Singapore and also check out these interesting facts you probably never knew about jsconf.asia

Southeast Asia's largest web developer conference. Spread the word. Follow us on Twitter @jsconfasia

Visit jsconf.asia

Key Findings

We analyzed Jsconf.asia page load time and found that the first response time was 81 ms and then it took 854 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

jsconf.asia performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value400 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

jsconf.asia

81 ms

jsconf.asia

47 ms

2019.jsconf.asia

86 ms

2019.jsconf.asia

67 ms

css

34 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Jsconf.asia, 91% (70 requests) were made to 2019.jsconf.asia and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (308 ms) relates to the external source 2019.jsconf.asia.

Page Optimization Overview & Recommendations

Page size can be reduced by 158.0 kB (7%)

Content Size

2.2 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jsconf.asia main page is 2.2 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. 60% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 61.2 kB

  • Original 92.6 kB
  • After minification 92.5 kB
  • After compression 31.4 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. 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 61.2 kB or 66% of the original size.

Image Optimization

-5%

Potential reduce by 96.7 kB

  • Original 2.0 MB
  • After minification 1.9 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. JSConf images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 89 B

  • Original 61.5 kB
  • After minification 61.5 kB
  • After compression 61.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 13 B

  • Original 3.3 kB
  • After minification 3.3 kB
  • After compression 3.3 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. Jsconf.asia has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (18%)

Requests Now

72

After Optimization

59

  • AJAX
  • Images
  • JavaScript
  • CSS

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

Network Requests Diagram

jsconf.asia

jsconf.asia

81 ms

jsconf.asia

jsconf.asia

47 ms

2019.jsconf.asia

2019.jsconf.asia

86 ms

2019.jsconf.asia

2019.jsconf.asia

67 ms

css

css

34 ms

app6.css

app6.css

39 ms

twilio.svg

twilio.svg

33 ms

cloudflare.svg

cloudflare.svg

51 ms

zuehlke.svg

zuehlke.svg

70 ms

stripe.svg

stripe.svg

62 ms

here.svg

here.svg

60 ms

zendesk.svg

zendesk.svg

63 ms

nexmo.svg

nexmo.svg

54 ms

glints.svg

glints.svg

64 ms

microsoft.svg

microsoft.svg

77 ms

pouchnation.png

pouchnation.png

102 ms

soho.png

soho.png

91 ms

mozilla.svg

mozilla.svg

94 ms

uilicious.svg

uilicious.svg

88 ms

paloit.svg

paloit.svg

90 ms

applitools.svg

applitools.svg

100 ms

nexmos.svg

nexmos.svg

113 ms

agan.jpg

agan.jpg

121 ms

yishus.jpg

yishus.jpg

124 ms

leoniew.jpg

leoniew.jpg

114 ms

mandym.jpg

mandym.jpg

123 ms

gilt.jpg

gilt.jpg

121 ms

darrene.jpg

darrene.jpg

136 ms

mayurt.jpg

mayurt.jpg

146 ms

vitoc.jpg

vitoc.jpg

142 ms

kevina.jpg

kevina.jpg

147 ms

keanl.jpg

keanl.jpg

150 ms

thongyj.jpg

thongyj.jpg

161 ms

aarong.jpg

aarong.jpg

156 ms

tamasp.jpg

tamasp.jpg

169 ms

pasinduds.jpg

pasinduds.jpg

169 ms

chathuv.jpg

chathuv.jpg

170 ms

oliviaj.jpg

oliviaj.jpg

170 ms

keerthanak.jpg

keerthanak.jpg

177 ms

monicad.jpg

monicad.jpg

195 ms

jquery.min.js

jquery.min.js

181 ms

jquery.form.min.js

jquery.form.min.js

152 ms

app7.js

app7.js

150 ms

zainf.jpg

zainf.jpg

265 ms

charlieg.jpg

charlieg.jpg

260 ms

anshorim.jpg

anshorim.jpg

250 ms

leonardol.jpg

leonardol.jpg

254 ms

shawnw.jpg

shawnw.jpg

248 ms

paula.jpg

paula.jpg

247 ms

jsconfasia.png

jsconfasia.png

253 ms

rymea.jpg

rymea.jpg

238 ms

melanieea.jpg

melanieea.jpg

228 ms

thorstens.jpg

thorstens.jpg

247 ms

christ.jpg

christ.jpg

258 ms

sumitc.jpg

sumitc.jpg

246 ms

inianp.jpg

inianp.jpg

239 ms

evanyou.jpg

evanyou.jpg

238 ms

ashik.jpg

ashik.jpg

234 ms

asimh.jpg

asimh.jpg

253 ms

meggant.jpg

meggant.jpg

244 ms

thaip.jpg

thaip.jpg

254 ms

ujjwals.jpg

ujjwals.jpg

244 ms

eytanm.jpg

eytanm.jpg

247 ms

dylanb.jpg

dylanb.jpg

247 ms

ignacioc.jpg

ignacioc.jpg

256 ms

patrickw.jpg

patrickw.jpg

242 ms

rolandt.jpg

rolandt.jpg

308 ms

alexl.jpg

alexl.jpg

307 ms

shilingt.jpg

shilingt.jpg

300 ms

noorul.jpg

noorul.jpg

298 ms

riteshm.jpg

riteshm.jpg

287 ms

kasp.jpg

kasp.jpg

288 ms

lauriev.jpg

lauriev.jpg

288 ms

analytics.js

analytics.js

124 ms

font

font

84 ms

collect

collect

14 ms

js

js

108 ms

Accessibility Review

jsconf.asia accessibility score

63

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 are not valid or misspelled

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

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

jsconf.asia best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

jsconf.asia 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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jsconf.asia can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Jsconf.asia 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

jsconf.asia

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