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Report Summary

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    Performance

  • 0

    Accessibility

  • 0

    Best Practices

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    SEO

pd.acm.org

ACM Learning Center

Page Load Speed

1.4 sec in total

First Response

53 ms

Resources Loaded

1.1 sec

Page Rendered

231 ms

pd.acm.org screenshot

About Website

Click here to check amazing Pd ACM content for China. Otherwise, check out these important facts you probably never knew about pd.acm.org

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Key Findings

We analyzed Pd.acm.org page load time and found that the first response time was 53 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

pd.acm.org performance score

0

Network Requests Diagram

pd.acm.org

53 ms

index.cfm

757 ms

master.css

33 ms

1.7_jquery.min.js

82 ms

chili-1.7.pack.js

24 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Pd.acm.org, 91% (30 requests) were made to Learning.acm.org and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (757 ms) relates to the external source Learning.acm.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 212.7 kB (46%)

Content Size

460.7 kB

After Optimization

248.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Pd.acm.org main page is 460.7 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. 25% of websites need less resources to load. Javascripts take 234.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 21.2 kB

  • Original 28.0 kB
  • After minification 25.7 kB
  • After compression 6.8 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 21.2 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 11.0 kB

  • Original 173.2 kB
  • After minification 162.2 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. Pd ACM images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 160.4 kB

  • Original 234.8 kB
  • After minification 194.1 kB
  • After compression 74.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 160.4 kB or 68% of the original size.

CSS Optimization

-82%

Potential reduce by 20.1 kB

  • Original 24.6 kB
  • After minification 16.6 kB
  • After compression 4.5 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. Pd.acm.org needs all CSS files to be minified and compressed as it can save up to 20.1 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (35%)

Requests Now

31

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pd ACM. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

pd.acm.org

pd.acm.org

53 ms

index.cfm

index.cfm

757 ms

master.css

master.css

33 ms

1.7_jquery.min.js

1.7_jquery.min.js

82 ms

chili-1.7.pack.js

chili-1.7.pack.js

24 ms

jquery.cycle.all.js

jquery.cycle.all.js

62 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

26 ms

style.css

style.css

46 ms

base.js

base.js

49 ms

utility.js

utility.js

71 ms

cssmenus.js

cssmenus.js

106 ms

horizontal.css

horizontal.css

69 ms

menus.css

menus.css

72 ms

menus.css

menus.css

113 ms

corner_tab.png

corner_tab.png

93 ms

datastructures_python.jpg

datastructures_python.jpg

96 ms

java_fundamentals.jpg

java_fundamentals.jpg

93 ms

advancedHTML5.jpg

advancedHTML5.jpg

97 ms

fail_better_limoncelli.jpg

fail_better_limoncelli.jpg

98 ms

Young_Mandela_edges.jpg

Young_Mandela_edges.jpg

92 ms

safari_logo.png

safari_logo.png

92 ms

books_logo.png

books_logo.png

95 ms

skillsoft-logo.jpg

skillsoft-logo.jpg

96 ms

ga.js

ga.js

82 ms

acm_lc_logo.png

acm_lc_logo.png

36 ms

sitemast_shadow.gif

sitemast_shadow.gif

39 ms

bg_input.png

bg_input.png

38 ms

bg_button.png

bg_button.png

36 ms

icons.png

icons.png

35 ms

tech_pack.gif

tech_pack.gif

36 ms

learningpaths.gif

learningpaths.gif

38 ms

shadow.png

shadow.png

43 ms

__utm.gif

__utm.gif

25 ms

SEO Factors

pd.acm.org SEO score

0

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pd.acm.org 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 Pd.acm.org main page’s claimed encoding is iso-8859-1. 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

pd.acm.org

Open Graph description is not detected on the main page of Pd ACM. 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: