28.1 sec in total
871 ms
26.2 sec
966 ms
Click here to check amazing QCon Beijing content for China. Otherwise, check out these important facts you probably never knew about qconbeijing.com
QCon是由InfoQ主办的综合性技术盛会,每年在伦敦、北京、纽约、圣保罗、上海、旧金山召开。自2007年3月份首次举办以来,已经有超万名高级技术人员参加过QCon大会。QCon内容源于实践并面向社区,演讲嘉宾依据热点话题,面向5年以上工作经验的技术团队负责人、架构师、工程总监、高级开发人员分享技术创新和典型实践。
Visit qconbeijing.comWe analyzed Qconbeijing.com page load time and found that the first response time was 871 ms and then it took 27.2 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
qconbeijing.com performance score
name
value
score
weighting
Value6.6 s
2/100
10%
Value17.2 s
0/100
25%
Value15.9 s
0/100
10%
Value1,160 ms
22/100
30%
Value0.77
5/100
15%
Value14.0 s
10/100
10%
871 ms
4936 ms
775 ms
800 ms
797 ms
Our browser made a total of 82 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Qconbeijing.com, 90% (74 requests) were made to 2016.qconbeijing.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source 2016.qconbeijing.com.
Page size can be reduced by 738.8 kB (53%)
1.4 MB
649.3 kB
In fact, the total size of Qconbeijing.com main page is 1.4 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 547.2 kB which makes up the majority of the site volume.
Potential reduce by 74.0 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 74.0 kB or 77% of the original size.
Potential reduce by 81.2 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, QCon Beijing needs image optimization as it can save up to 81.2 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 287.9 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 287.9 kB or 73% of the original size.
Potential reduce by 295.7 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. Qconbeijing.com needs all CSS files to be minified and compressed as it can save up to 295.7 kB or 84% of the original size.
Number of requests can be reduced by 19 (24%)
79
60
The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of QCon Beijing. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
qconbeijing.com
871 ms
2016.qconbeijing.com
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qconbeijing.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Definition list items are not wrapped in <dl> elements
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
Links do not have a discernible name
qconbeijing.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
qconbeijing.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
ZH
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Qconbeijing.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Qconbeijing.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.
qconbeijing.com
Open Graph data is detected on the main page of QCon Beijing. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: