2.5 sec in total
177 ms
2 sec
268 ms
Visit dewey.org now to see the best up-to-date Dewey content for South Africa and also check out these interesting facts you probably never knew about dewey.org
The Dewey Decimal Classification (DDC) system is the world’s most widely used way to organize library collections. The DDC constantly updates to enable better discovery across any topic in multiple la...
Visit dewey.orgWe analyzed Dewey.org page load time and found that the first response time was 177 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.
dewey.org performance score
name
value
score
weighting
Value12.6 s
0/100
10%
Value23.7 s
0/100
25%
Value16.0 s
0/100
10%
Value1,300 ms
18/100
30%
Value0.299
40/100
15%
Value24.9 s
0/100
10%
177 ms
105 ms
54 ms
55 ms
56 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Dewey.org, 5% (4 requests) were made to S7.addthis.com and 3% (2 requests) were made to Gtrk.s3.amazonaws.com. The less responsive or slowest element that took the longest time to load (410 ms) relates to the external source Oclc.org.
Page size can be reduced by 3.1 MB (75%)
4.1 MB
1.0 MB
In fact, the total size of Dewey.org main page is 4.1 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 3.2 MB which makes up the majority of the site volume.
Potential reduce by 152.7 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 152.7 kB or 76% of the original size.
Potential reduce by 19.4 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. Dewey images are well optimized though.
Potential reduce by 2.5 MB
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 2.5 MB or 79% of the original size.
Potential reduce by 377.8 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. Dewey.org needs all CSS files to be minified and compressed as it can save up to 377.8 kB or 87% of the original size.
Number of requests can be reduced by 50 (66%)
76
26
The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dewey. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
dewey
177 ms
dewey.en.html
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scf.css
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reviews.css
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jquery.js
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dewey.org 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Image elements do not have [alt] attributes
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
dewey.org 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
Missing source maps for large first-party JavaScript
dewey.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
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 Dewey.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 Dewey.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.
dewey.org
Open Graph data is detected on the main page of Dewey. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: