Analyze Prometheus Books

Prometheus Books : - Critical Thinking Contemporary Issues Education Gay & Lesbian Golden Age (Issues in Aging) Health and Medicine History Human Sexuality Humanism Philosophy Popular Literature Scie...

Page load speed analysis

  • 11/100

    Poor result
  • 4

    Successful tests
  • 4

    Failed tests
  • First response

    532 ms

  • Resources loaded

    1.7 sec

  • Page rendered

    230 ms

  • Total page load time

    2.5 sec

Visit now to see the best up-to-date Prometheus Books content for United States and also check out these interesting facts you probably never knew about

We analyzed page load time and found that the first response time was 532 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster. This domain responded with an error, which can significantly jeopardize rating and web reputation

Page optimization

  • HTML 32.4 kB
    Images 218.0 kB
    Javascripts 70.4 kB
    CSS 38.8 kB

    In fact, the total size of main page is 359.6 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. 30% of websites need less resources to load. Images take 218.0 kB which makes up the majority of the site volume.

    • Original 32.4 kB
    • After minification 31.0 kB
    • After compression 5.8 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 26.6 kB or 82% of the original size.

    • Original 218.0 kB
    • After optimization 198.9 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. Prometheus Books images are well optimized though.

    • Original 70.4 kB
    • After minification 65.3 kB
    • After compression 23.4 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 47.0 kB or 67% of the original size.

    • Original 38.8 kB
    • After minification 24.1 kB
    • After compression 8.4 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 30.4 kB or 78% of the original size.

Network requests diagram

  • stylesheet.css
  • stylesheet_css_buttons.css
  • stylesheet_lightbox.css
  • screen.css
  • scripts.js
  • sifr.js
  • dropdown.js
  • dropdownConfig.js
  • reset.css
  • typography.css
  • frame.css
  • forms.css
  • dropdown.css
  • sIFR-screen.css
  • buttons.css
  • tl_brdr2_trans.gif
  • archive_icon_document.gif
  • s.gif
  • tr_brdr2_trans.gif
  • bl_brdr2_trans.gif
  • br_brdr2_trans.gif
  • bullet_square_grey.gif
  • home.gif
  • login.gif
  • prometheus.gif
  • nav.gif
  • about.jpg
  • author.jpg
  • imprint.jpg
  • contact.jpg
  • searchButton.gif
  • subBg.gif
  • bg.gif
  • top.gif
  • leftBot.gif
  • leftTop.gif
  • rightBg.gif
  • rightTop.gif
  • Numerate%20Life_cover.jpg
  • Kepler%20and%20the%20Universe_cover.jpg
  • LetsTalkAboutDeath.jpg
  • Good%20Thinking.jpg
  • CrouchingTiger.jpg
  • PBLogo300px.jpg
  • PyrLogo300px.jpg
  • SSBLogo300px.jpg
  • HBLogo300px.jpg
  • centerBg.gif
  • rightBot.gif
  • bot.gif
  • ga.js
  • __utm.gif
  • print_stylesheet.css
  • print.css
  • sIFR-print.css

Our browser made a total of 56 requests to load all elements on the main page. We found that 86% of them (48 requests) were addressed to the original, 9% (5 requests) were made to and 4% (2 requests) were made to The less responsive or slowest element that took the longest time to load (532 ms) belongs to the original domain

Additional info on


The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Prometheus Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.









Possible request optimization











Poor result

IP address

This IP address is dedicated to This is the best domain hosting practice .

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 14394
NS 21599
NS 21599

21599 Mname:
Serial: 2017061100
Refresh: 86400
Retry: 7200
Expire: 3600000
Minimum-ttl: 300
MX 14399 Pri: 0

Language and encoding

Normal result


EN en 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 English is used on the page, and it matches the claimed language. Our system also found out that 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.

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

Country of origin for 39.1% of all visits is United States. It’s good for 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

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Prometheus Books. 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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