Tools & Wizards About Us
droidconvn.com screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

droidconvn.com

Droidcon Vietnam 2019

Page Load Speed

653 ms in total

First Response

33 ms

Resources Loaded

342 ms

Page Rendered

278 ms

droidconvn.com screenshot

About Website

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Key Findings

We analyzed Droidconvn.com page load time and found that the first response time was 33 ms and then it took 620 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

droidconvn.com performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.2 s

40/100

10%

Network Requests Diagram

droidconvn.com

33 ms

droidconvn.com

62 ms

main.css

37 ms

email-decode.min.js

17 ms

jquery.min.js

21 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 62% of them (16 requests) were addressed to the original Droidconvn.com, 12% (3 requests) were made to Fonts.gstatic.com and 8% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (121 ms) belongs to the original domain Droidconvn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 157.1 kB (13%)

Content Size

1.2 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Droidconvn.com main page is 1.2 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. 45% of websites need less resources to load. Images take 975.6 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 18.1 kB

  • Original 24.8 kB
  • After minification 24.7 kB
  • After compression 6.7 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 18.1 kB or 73% of the original size.

Image Optimization

-11%

Potential reduce by 107.0 kB

  • Original 975.6 kB
  • After minification 868.6 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, Droidcon Vn needs image optimization as it can save up to 107.0 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-20%

Potential reduce by 32.0 kB

  • Original 163.7 kB
  • After minification 163.7 kB
  • After compression 131.7 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 32.0 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (33%)

Requests Now

21

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Droidcon Vn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

droidconvn.com

droidconvn.com

33 ms

droidconvn.com

droidconvn.com

62 ms

main.css

main.css

37 ms

email-decode.min.js

email-decode.min.js

17 ms

jquery.min.js

jquery.min.js

21 ms

bootstrap.min.js

bootstrap.min.js

34 ms

default.js

default.js

50 ms

scripts.min.js

scripts.min.js

118 ms

sprites.svg

sprites.svg

46 ms

conference.jpg

conference.jpg

118 ms

gdg-vietnam.png

gdg-vietnam.png

56 ms

logo-nexmo.png

logo-nexmo.png

119 ms

mercari-logo-horizontal.png

mercari-logo-horizontal.png

120 ms

logo-line.png

logo-line.png

119 ms

logo-jetbrains.jpg

logo-jetbrains.jpg

121 ms

css

css

32 ms

analytics.js

analytics.js

60 ms

js

js

86 ms

hero.jpg

hero.jpg

39 ms

logo-droidcon.png

logo-droidcon.png

35 ms

twitter-feed.jpg

twitter-feed.jpg

48 ms

KFOkCnqEu92Fr1MmgVxIIzc.ttf

KFOkCnqEu92Fr1MmgVxIIzc.ttf

39 ms

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

44 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

54 ms

collect

collect

13 ms

js

js

71 ms

Accessibility Review

droidconvn.com accessibility score

69

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

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

droidconvn.com 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

droidconvn.com SEO score

97

Search Engine Optimization Advices

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Droidconvn.com 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 Droidconvn.com 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

droidconvn.com

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