collegeopentextbooks.org: COT Education
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Page load speed analysis
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70/100
Good result -
6
Successful tests -
2
Failed tests
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First response
430 ms
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Resources loaded
1.9 sec
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Page rendered
428 ms
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Total page load time
2.8 sec
Welcome to collegeopentextbooks.org homepage info - get ready to check Collegeopentextbooks best content for United States right away, or after learning these important things about collegeopentextbooks.org
We analyzed Collegeopentextbooks.org page load time and found that the first response time was 430 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
Page optimization
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HTML 26.0 kB Images 1.4 MB Javascripts 277.3 kB CSS 70.4 kB In fact, the total size of Collegeopentextbooks.org main page is 1.8 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. 35% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
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Original 26.0 kB
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After minification 24.7 kB
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After compression 6.3 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 19.7 kB or 76% of the original size.
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Original 1.4 MB
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After optimization 1.3 MB
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. Collegeopentextbooks images are well optimized though.
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Original 277.3 kB
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After minification 271.6 kB
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After compression 91.9 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 185.3 kB or 67% of the original size.
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Original 70.4 kB
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After minification 51.9 kB
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After compression 10.9 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. Collegeopentextbooks.org needs all CSS files to be minified and compressed as it can save up to 59.6 kB or 85% of the original size.
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Network requests diagram
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collegeopentextbooks.org
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jcemediabox.css
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style.css
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calendar.css
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front.css
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jcemediabox.js
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mediaobject.js
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default.js
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core.js
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mootools-core.js
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caption.js
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script.js
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system.css
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general.css
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template.css
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jquery.js
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script.js
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bumpbox.js
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system.css
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page_gl.png
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sheet_b.png
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sheet_t.png
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sheet.png
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header-1.png
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header-withbook.png
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blockcontent_b.png
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blockcontent_t.png
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blockcontent.png
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vmenublock_b.png
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vmenublock_t.png
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vmenublock.png
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vmenuitem.png
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spacer.gif
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vsubitem.png
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vsubitemicon.png
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blockheader.png
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linkdin.png
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icon-2.png
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twitter.png
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logo.png
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int_alg_cover.png
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logo_dynamicbooks.png
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logo_thinkaha.png
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academicpub_logo.gif
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bridgepoint-education-logo.jpg
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iskme-logo-3.jpg
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lsi-logo.png
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mentorcloud_logo.png
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svef_logo.jpg
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open_textbook_cover_m.jpg
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footer.png
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livemarks.png
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analytics.js
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popup.html
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tooltip.html
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collect
Our browser made a total of 56 requests to load all elements on the main page. We found that 96% of them (54 requests) were addressed to the original Collegeopentextbooks.org, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Collegeopentextbooks.org.
Additional info on collegeopentextbooks.org
Requests
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Collegeopentextbooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
Javascripts
Images
CSS
AJAX
All
Possible request optimization
Javascripts
Images
CSS
AJAX
Optimized
All
Normal result
IP address
Collegeopentextbooks.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
DNS records
| Type | Host | Target/ip | TTL | Other |
|---|---|---|---|---|
| A | collegeopentextbooks.org |
184.168.131.241 | 600 | |
| NS | collegeopentextbooks.org |
ns77.domaincontrol.com | 3600 | |
| NS | collegeopentextbooks.org |
ns78.domaincontrol.com | 3600 | |
| SOA | collegeopentextbooks.org |
86400 | Mname: ns77.domaincontrol.com Rname: dns.jomax.net Serial: 2018120801 Refresh: 28800 Retry: 7200 Expire: 604800 Minimum-ttl: 600 |
Language and encoding
Good result
Language
EN
Detected
EN
Claimed
Encoding
UTF-8
Claimed
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Collegeopentextbooks.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 Collegeopentextbooks.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
Collegeopentextbooks.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 61.8% of all visits is United States. It’s good for Collegeopentextbooks.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
Poor result
Social Sharing Optimization
Open Graph description is not detected on the main page of Collegeopentextbooks. 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:
collegeopentextbooks.org
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