Analyze F5-官网F5 Networks中国

F5销售电话400 089 8921,是应用交付领域的全球领导者.DDoS防护,访问管理,数据流量管理,混合云,智能DNS扩展.F5随时随地,在任何设备上安全交付应用.

Page load speed analysis

  • 57/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    357 ms

  • Resources loaded

    2.8 sec

  • Page rendered

    399 ms

  • Total page load time

    3.6 sec

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We analyzed page load time and found that the first response time was 357 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Page optimization

  • HTML 125.4 kB
    Images 127.0 kB
    Javascripts 801.7 kB
    CSS 167.0 kB

    In fact, the total size of 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. 50% of websites need less resources to load. Javascripts take 801.7 kB which makes up the majority of the site volume.

    • Original 125.4 kB
    • After minification 116.7 kB
    • After compression 35.9 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 89.4 kB or 71% of the original size.

    • Original 127.0 kB
    • After optimization 120.6 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. F5 images are well optimized though.

    • Original 801.7 kB
    • After minification 794.9 kB
    • After compression 241.7 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 560.0 kB or 70% of the original size.

    • Original 167.0 kB
    • After minification 166.7 kB
    • After compression 32.9 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. needs all CSS files to be minified and compressed as it can save up to 134.1 kB or 80% of the original size.

Network requests diagram

  • portal-f5-ie.css
  • aa2b4fa05ace9d15f99b62f2591afe6c.759.css
  • jquery.min.js
  • jquery-ui.min.js
  • jquery-migrate.min.js
  • modernizr.js
  • selectivizr-min.js
  • f5-ie.js
  • WebResource.axd
  • Telerik.Web.UI.WebResource.axd
  • ea252ffa50f51c8e782d86a2f983d9ef.759.js
  • f5-at.min.js
  • f5-core-ie.min.js
  • 605ba5e9c463d3ac8aa5090c64c77c03.759.js
  • hp-datastream-1.svg
  • hp-soad-report-thumb.jpg
  • gartner-MQ-thumb.png
  • hp-software-story.jpg
  • hp-silverline-ddos.jpg
  • hp-silverline-platform.jpg
  • hp-partner-logo-gartner.svg
  • globe-sm.svg
  • hp-datastream-2.svg
  • hp-icon-programmability.svg
  • hp-icon-scalable.svg
  • hp-icon-control.svg
  • Lori-MacVittie.png
  • hp-datastream-3.svg
  • hp-datastream-4.svg
  • logo.svg
  • gtm.js
  • insight.min.js
  • logos3.png
  • pixel
  • TabletGothic.eot
  • TabletGothicSemiBold.eot
  • f5.eot
  • analytics.js
  • solutionsSubmenu.html
  • productsSubmenu.html
  • supportSubmenu.html
  • educationSubmenu.html
  • howSubmenu.html
  • aboutSubmenu.html
  • bg-p1-lg.jpg
  • bg-p5-lg.jpg
  • bg-p7-lg.jpg
  • loading.gif
  • collect
  • collect
  • collect
  • collect
  • pixel
  • match-result
  • feature-spot-solutions.jpg
  • feature-spot-products.jpg
  • feature-spot-support.jpg
  • ga-audiences
  • feature-spot-images-education.jpg
  • feature-spot-image-how-to-buy.jpg
  • feature-spot-about-us.jpg
  • l
  • ip.json
  • visitWebPage
  • vt.aspx
  • ga.js
  • collect
  • collect
  • __utm.gif
  • __utm.gif

Our browser made a total of 74 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original, 49% (36 requests) were made to and 16% (12 requests) were made to The less responsive or slowest element that took the longest time to load (674 ms) relates to the external source

Additional info on


The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of F5. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Normal result


As for redirects, our browser reached this domain in two steps. The first redirect led to, then it was forwarded to, and finally we managed to open this domain. We strongly recommend that the redirects should be reduced, as the more redirects a site has, the slower it loads.

IP address 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

DNS records

Type Host Target/ip TTL Other
A 14399
A 14399
NS 14399
NS 14399

14400 Mname:
Serial: 2016081603
Refresh: 28800
Retry: 7200
Expire: 604800
Minimum-ttl: 14400

Language and encoding

Normal result


ZH zh language flag


EN en language flag





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

The server of is located in United States, but, unfortunately, we cannot identify the countries where the visitors come from and thus it’s impossible to define if the distance can potentially affect the page load time.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of F5. 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:

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