Analyze

www-cache.pbs.org: PBS: Public Broadcasting Service

Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS Newshour, Masterpiece and many others...

Page load speed analysis

  • 61/100

    Normal result
  • 7

    Successful tests
  • 1

    Failed test
  • First response

    622 ms

  • Resources loaded

    3.7 sec

  • Page rendered

    819 ms

  • Total page load time

    5.2 sec

Visit www-cache.pbs.org now to see the best up-to-date Www Cache PBS content for United States and also check out these interesting facts you probably never knew about www-cache.pbs.org

We analyzed Www-cache.pbs.org page load time and found that the first response time was 622 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Page optimization

  • HTML 182.0 kB
    Images 572.4 kB
    Javascripts 818.7 kB
    CSS 152.8 kB

    In fact, the total size of Www-cache.pbs.org main page is 1.7 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 818.7 kB which makes up the majority of the site volume.

    • Original 182.0 kB
    • After minification 176.0 kB
    • After compression 30.3 kB

    HTML optimization

    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 151.6 kB or 83% of the original size.

    • Original 572.4 kB
    • After optimization 534.0 kB

    Image optimization

    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. Www Cache PBS images are well optimized though.

    • Original 818.7 kB
    • After minification 812.7 kB
    • After compression 270.5 kB

    JavaScript optimization

    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 548.3 kB or 67% of the original size.

    • Original 152.8 kB
    • After minification 152.4 kB
    • After compression 28.6 kB

    CSS optimization

    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. Www-cache.pbs.org needs all CSS files to be minified and compressed as it can save up to 124.2 kB or 81% of the original size.

Network requests diagram

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  • www.pbs.org
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  • foresee_dhtml.css

Our browser made a total of 87 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Www-cache.pbs.org, 24% (21 requests) were made to Image.pbs.org and 18% (16 requests) were made to Dl47xs20witg8.cloudfront.net. The less responsive or slowest element that took the longest time to load (879 ms) relates to the external source Googletagservices.com.

Additional info on www-cache.pbs.org

Requests

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www Cache PBS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

22

Javascripts

43

Images

5

CSS

8

AJAX

78

All

Possible request optimization

1

Javascripts

30

Images

1

CSS

8

AJAX

38

Optimized

40

All

Normal result

Redirects

As for redirects, our browser was forwarded to http://www.pbs.org/ before it reached this domain.

IP address

Www-cache.pbs.org uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

www-cache.pbs.org

video.ideastream.org

video.pbs.org

video.whyy.org

video.pba.org

54.243.141.169

DNS records

Type Host Target/ip TTL Other
A

r53-vip.pbs.org

23.21.237.247 300
CNAME

www-cache.pbs.org

r53-vip.pbs.org 84073

Language and encoding

Normal result

Language

EN en language flag

Detected

N/A  language flag

Claimed

Encoding

UTF-8

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Www-cache.pbs.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Www-cache.pbs.org 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.

HTTPS certificate

SSL Certificate

Www-cache.pbs.org has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 75.8% of all visits is United States. It’s good for Www-cache.pbs.org that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Good result

Social Sharing Optimization

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

www-cache.pbs.org

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