1.3 sec in total
72 ms
1.2 sec
80 ms
Visit insite.vitalsource.com now to see the best up-to-date Insite Vital Source content for United States and also check out these interesting facts you probably never knew about insite.vitalsource.com
VitalSource Bookshelf is the world’s leading platform for distributing, accessing, consuming, and engaging with digital textbooks and course materials.
Visit insite.vitalsource.comWe analyzed Insite.vitalsource.com page load time and found that the first response time was 72 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.
insite.vitalsource.com performance score
name
value
score
weighting
Value17.6 s
0/100
10%
Value20.8 s
0/100
25%
Value17.6 s
0/100
10%
Value1,640 ms
11/100
30%
Value0.002
100/100
15%
Value21.0 s
1/100
10%
72 ms
174 ms
189 ms
310 ms
328 ms
Our browser made a total of 37 requests to load all elements on the main page. We found that 78% of them (29 requests) were addressed to the original Insite.vitalsource.com, 14% (5 requests) were made to Jigsaw.vitalsource.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (328 ms) belongs to the original domain Insite.vitalsource.com.
Page size can be reduced by 384.5 kB (67%)
572.2 kB
187.7 kB
In fact, the total size of Insite.vitalsource.com main page is 572.2 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. 15% of websites need less resources to load. Javascripts take 539.8 kB which makes up the majority of the site volume.
Potential reduce by 19.2 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 19.2 kB or 80% of the original size.
Potential reduce by 359.6 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 359.6 kB or 67% of the original size.
Potential reduce by 5.8 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. Insite.vitalsource.com needs all CSS files to be minified and compressed as it can save up to 5.8 kB or 69% of the original size.
Number of requests can be reduced by 16 (46%)
35
19
The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Insite Vital Source. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
insite.vitalsource.com
72 ms
insite.vitalsource.com
174 ms
vendor.min-0e128173.js
189 ms
box.js
310 ms
fraction.min-b18964f4.js
328 ms
fraction.min-2d88f180.css
165 ms
analytics.js
26 ms
insite.vitalsource.com.json
68 ms
roboto-v15-latin-regular.woff
36 ms
roboto-v15-latin-500.woff
204 ms
roboto-v15-latin-300.woff
36 ms
roboto-v15-latin-100.woff
72 ms
roboto-v15-latin-700.woff
97 ms
roboto-v15-latin-900.woff
224 ms
en.json
63 ms
collect
54 ms
menu.svg
34 ms
circle_bookshelf.svg
33 ms
circle_mobile.svg
33 ms
circle_support.svg
37 ms
circle_bookshelf_sm.svg
32 ms
circle_support_sm.svg
41 ms
about.svg
43 ms
logo_bookshelf.svg
80 ms
watkins_search.svg
83 ms
action_building_library.svg
89 ms
action_building_library_sm.svg
129 ms
vitalsource_white.svg
102 ms
logo_bookshelf_dark.svg
104 ms
account.svg
114 ms
search.svg
113 ms
diagonal_loader.svg
117 ms
socket
85 ms
application-27c028bfa11e6414fdba1ae3d4bea2b1.css
34 ms
application-0dccaccb5a8f18a26a3422c61564d50e.js
166 ms
hammer.js
34 ms
index-f6c87a9ae1df4d396cc08492080a6036.js
250 ms
insite.vitalsource.com accessibility score
insite.vitalsource.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
insite.vitalsource.com SEO score
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Insite.vitalsource.com 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 Insite.vitalsource.com 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.
insite.vitalsource.com
Open Graph description is not detected on the main page of Insite Vital Source. 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: