541 ms in total
53 ms
377 ms
111 ms
Visit calculusbooks.co.uk now to see the best up-to-date Calculus Book S content and also check out these interesting facts you probably never knew about calculusbooks.co.uk
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Visit calculusbooks.co.ukWe analyzed Calculusbooks.co.uk page load time and found that the first response time was 53 ms and then it took 488 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
calculusbooks.co.uk performance score
name
value
score
weighting
Value1.8 s
89/100
10%
Value2.8 s
83/100
25%
Value2.0 s
99/100
10%
Value20 ms
100/100
30%
Value0.001
100/100
15%
Value2.7 s
97/100
10%
53 ms
82 ms
56 ms
73 ms
39 ms
Our browser made a total of 10 requests to load all elements on the main page. We found that 80% of them (8 requests) were addressed to the original Calculusbooks.co.uk, 20% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (124 ms) belongs to the original domain Calculusbooks.co.uk.
Page size can be reduced by 37.5 kB (54%)
69.4 kB
31.9 kB
In fact, the total size of Calculusbooks.co.uk main page is 69.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Javascripts take 46.3 kB which makes up the majority of the site volume.
Potential reduce by 8.3 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. This page needs HTML code to be minified as it can gain 3.7 kB, which is 31% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.3 kB or 71% of the original size.
Potential reduce by 0 B
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. Calculus Book S images are well optimized though.
Potential reduce by 29.1 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 29.1 kB or 63% of the original size.
We found no issues to fix!
8
8
The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calculus Book S. According to our analytics all requests are already optimized.
calculusbooks.co.uk
53 ms
calculusbooks.co.uk
82 ms
screen58ac.css
56 ms
prototype.js
73 ms
jquery-1.5.min.js
39 ms
ga.js
34 ms
figures.html
124 ms
bni.gif
25 ms
logo.jpg
23 ms
__utm.gif
11 ms
calculusbooks.co.uk accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
calculusbooks.co.uk 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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
calculusbooks.co.uk SEO score
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Calculusbooks.co.uk 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 Calculusbooks.co.uk 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.
calculusbooks.co.uk
Open Graph description is not detected on the main page of Calculus Book S. 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: