4.7 sec in total
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Click here to check amazing Left Books content. Otherwise, check out these important facts you probably never knew about leftbooks.co.uk
Left Books.co.uk supplies left books both new and second hand, specialising in socialist and Marxist literature
Visit leftbooks.co.ukWe analyzed Leftbooks.co.uk page load time and found that the first response time was 341 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
leftbooks.co.uk performance score
name
value
score
weighting
Value2.9 s
54/100
10%
Value5.2 s
23/100
25%
Value8.6 s
17/100
10%
Value880 ms
32/100
30%
Value0.025
100/100
15%
Value26.3 s
0/100
10%
341 ms
112 ms
270 ms
454 ms
325 ms
Our browser made a total of 116 requests to load all elements on the main page. We found that 97% of them (113 requests) were addressed to the original Leftbooks.co.uk, 2% (2 requests) were made to Static.xx.fbcdn.net and 1% (1 request) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Leftbooks.co.uk.
Page size can be reduced by 120.9 kB (3%)
3.5 MB
3.4 MB
In fact, the total size of Leftbooks.co.uk main page is 3.5 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. 40% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.
Potential reduce by 84.1 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 16.3 kB, which is 16% 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 84.1 kB or 84% of the original size.
Potential reduce by 2.4 kB
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. Left Books images are well optimized though.
Potential reduce by 16.2 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 16.2 kB or 25% of the original size.
Potential reduce by 18.3 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. Leftbooks.co.uk needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 27% of the original size.
Number of requests can be reduced by 81 (70%)
115
34
The browser has sent 115 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Left 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 62 to 1 for JavaScripts and as a result speed up the page load time.
leftbooks.co.uk
341 ms
112 ms
package-sf.css
270 ms
package-sf.js
454 ms
StorefrontStyle_271.css
325 ms
style-ie.css
90 ms
leftbookslogo.jpg
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en-GB.js
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GBP.js
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string.js
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legacy.js
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tools.js
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constants.js
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browser.js
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scope.js
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base64.js
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inject-sec-token.js
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cookie.js
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core.js
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support.js
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like.php
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validate.js
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storage.js
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dropdown.js
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cwi.jpg
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ConstituentAssembly.jpg
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Socialism-Utopian-and-Scientific-Socialist-Books.jpg
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women.jpg
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escape-selector.js
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dict.en.json
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CWI_trotsky_book_h.jpg
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Lessons-of-October-cover_h.jpg
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making_of_a_liverpool_militant_h.jpg
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in_defence_of_trotskyism_h.jpg
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riseofmilitant_h.jpg
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from_militant_to_the_socialist_party_h.jpg
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Reclaim-the-Game-2019_h.jpg
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CWI_Marxism2013_FINAL_2_h.jpg
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leftbooks.co.uk accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
<frame> or <iframe> elements do not have a title
Form elements do not have associated labels
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
leftbooks.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
leftbooks.co.uk 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 doesn't use legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leftbooks.co.uk 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 Leftbooks.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.
leftbooks.co.uk
Open Graph description is not detected on the main page of Left 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: