2.4 sec in total
541 ms
1.3 sec
478 ms
Visit safaribooksonline.de now to see the best up-to-date Safaribooksonline content for Germany and also check out these interesting facts you probably never knew about safaribooksonline.de
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Visit safaribooksonline.deWe analyzed Safaribooksonline.de page load time and found that the first response time was 541 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
safaribooksonline.de performance score
name
value
score
weighting
Value3.3 s
41/100
10%
Value4.5 s
36/100
25%
Value4.5 s
73/100
10%
Value50 ms
100/100
30%
Value0.01
100/100
15%
Value4.9 s
77/100
10%
541 ms
17 ms
39 ms
37 ms
99 ms
Our browser made a total of 53 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Safaribooksonline.de, 6% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (541 ms) relates to the external source Safaribooksonline.com.
Page size can be reduced by 399.4 kB (38%)
1.1 MB
657.6 kB
In fact, the total size of Safaribooksonline.de main page is 1.1 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. 50% of websites need less resources to load. Images take 570.5 kB which makes up the majority of the site volume.
Potential reduce by 25.2 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 25.2 kB or 68% of the original size.
Potential reduce by 64.8 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. Obviously, Safaribooksonline needs image optimization as it can save up to 64.8 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 138.9 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 138.9 kB or 54% of the original size.
Potential reduce by 170.5 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. Safaribooksonline.de needs all CSS files to be minified and compressed as it can save up to 170.5 kB or 88% of the original size.
Number of requests can be reduced by 15 (32%)
47
32
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Safaribooksonline. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.
www.safaribooksonline.com
541 ms
b1403569c56a.css
17 ms
ee2203a5dc25.js
39 ms
7366a7f62d1c.js
37 ms
deployment.js
99 ms
analytics.js
67 ms
gtm.js
97 ms
safari-logo-lockup-sunshine-and-white.svg
50 ms
arrow.png
51 ms
safari-prompt-sunshine.svg
61 ms
app-icon-search-grey.svg
62 ms
two-people-at-whiteboard.jpg
64 ms
logo-client-tesla.svg
80 ms
logo-client-amazon.svg
78 ms
logo-client-netflix.svg
77 ms
logo-client-blizzard.svg
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logo-client-google.svg
80 ms
logo-client-yahoo.svg
81 ms
thousands-of-books-clean-code-a-handbook-of-agile-software-craftsmanship-9780136083238_8.jpg
87 ms
thousands-of-books-hadoop-the-definitive-guide-9781449328917_9.jpg
85 ms
thousands-of-books-big-data-revolution.jpg
93 ms
thousands-of-books-rise-of-the-robots.jpg
111 ms
thousands-of-books-don%E2%80%99t-make-me-think-9780133597271-2014-01-06.jpg
95 ms
thousands-of-books-your-strategy-needs-a-strategy.jpg
109 ms
safari-prompt-sunshine-filled.svg
93 ms
exclusive-video-content-scott-murray.jpg
111 ms
exclusive-video-content-eric-ries.jpg
112 ms
exclusive-video-content-masterclass-screenlayout-option2instructor.jpg
109 ms
0010-video-screenshot-nadya-peek.jpg
115 ms
promotion--android-ios-queue-nexus-9-iphone.png
123 ms
apple_store.png
110 ms
android.png
112 ms
social-icon-twitter-grey.svg
112 ms
social-icon-github-grey.svg
115 ms
social-icon-facebook-grey.svg
120 ms
social-icon-linkedin-grey.svg
118 ms
social-icon-google-grey.svg
119 ms
StagSans-Light-Web.woff
159 ms
StagSans-Book-Web.woff
145 ms
StagSans-Medium-Web.woff
145 ms
Stag-Light-Web.woff
145 ms
Stag-Book-Web.woff
158 ms
linkid.js
18 ms
collect
24 ms
fbevents.js
82 ms
conversion.js
97 ms
oct.js
85 ms
98 ms
123 ms
adsct
97 ms
adsct
98 ms
nr-885.min.js
95 ms
MultiNoun.jsonp
33 ms
safaribooksonline.de accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-hidden="true"] elements contain focusable descendents
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
Buttons do not have an accessible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
safaribooksonline.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
safaribooksonline.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
DE
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Safaribooksonline.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Safaribooksonline.de 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.
safaribooksonline.de
Open Graph description is not detected on the main page of Safaribooksonline. 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: