1.1 sec in total
124 ms
573 ms
418 ms
Click here to check amazing Doc Book content for United States. Otherwise, check out these important facts you probably never knew about docbook.org
Visit docbook.orgWe analyzed Docbook.org page load time and found that the first response time was 124 ms and then it took 991 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
docbook.org performance score
name
value
score
weighting
Value2.1 s
81/100
10%
Value2.1 s
96/100
25%
Value2.1 s
99/100
10%
Value110 ms
97/100
30%
Value0.039
100/100
15%
Value3.4 s
93/100
10%
124 ms
39 ms
77 ms
27 ms
25 ms
Our browser made a total of 18 requests to load all elements on the main page. We found that 61% of them (11 requests) were addressed to the original Docbook.org, 11% (2 requests) were made to Docbook.github.com and 11% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (198 ms) relates to the external source Cse.google.com.
Page size can be reduced by 13.5 kB (27%)
50.3 kB
36.8 kB
In fact, the total size of Docbook.org main page is 50.3 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. Only 10% of websites need less resources to load. Images take 33.5 kB which makes up the majority of the site volume.
Potential reduce by 8.1 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. 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 8.1 kB or 68% of the original size.
Potential reduce by 1.6 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. Doc Book images are well optimized though.
Potential reduce by 3.9 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. Docbook.org needs all CSS files to be minified and compressed as it can save up to 3.9 kB or 77% of the original size.
We found no issues to fix!
14
14
The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doc Book. According to our analytics all requests are already optimized.
docbook.org
124 ms
tabs.css
39 ms
website.css
77 ms
dbmodnizr.js
27 ms
db-noprism.css
25 ms
brand
171 ms
db-noprism.css
34 ms
dbmodnizr.js
24 ms
banner.png
39 ms
tr_999.gif
44 ms
tl_999.gif
171 ms
smallcover.gif
174 ms
xslcover.png
170 ms
button.jpg
173 ms
feed-icon.gif
170 ms
rackspaces_logo.png
170 ms
brand
198 ms
google_custom_search_watermark.gif
75 ms
docbook.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.
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
docbook.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
docbook.org SEO score
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Docbook.org 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 Docbook.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.
docbook.org
Open Graph description is not detected on the main page of Doc Book. 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: