15.9 sec in total
184 ms
9.6 sec
6.1 sec
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Visit wrox.comWe analyzed Wrox.com page load time and found that the first response time was 184 ms and then it took 15.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
wrox.com performance score
name
value
score
weighting
Value3.1 s
48/100
10%
Value5.7 s
16/100
25%
Value6.6 s
37/100
10%
Value2,820 ms
3/100
30%
Value0
100/100
15%
Value11.9 s
17/100
10%
184 ms
187 ms
230 ms
3336 ms
3778 ms
Our browser made a total of 53 requests to load all elements on the main page. We found that 17% of them (9 requests) were addressed to the original Wrox.com, 66% (35 requests) were made to Media.wiley.com and 4% (2 requests) were made to Static.adzerk.net. The less responsive or slowest element that took the longest time to load (3.8 sec) relates to the external source Media.wiley.com.
Page size can be reduced by 490.9 kB (31%)
1.6 MB
1.1 MB
In fact, the total size of Wrox.com main page is 1.6 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. 45% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 23.9 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 5.2 kB, which is 17% 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 23.9 kB or 76% of the original size.
Potential reduce by 104.1 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. Wrox images are well optimized though.
Potential reduce by 280.5 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 280.5 kB or 67% of the original size.
Potential reduce by 82.4 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. Wrox.com needs all CSS files to be minified and compressed as it can save up to 82.4 kB or 81% of the original size.
Number of requests can be reduced by 23 (52%)
44
21
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wrox. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
wrox.com
184 ms
www.wrox.com
187 ms
230 ms
style.css
3336 ms
dom.css
3778 ms
151358.css
3333 ms
prototype16.js
3774 ms
AC_OETags.js
3326 ms
pageear.js
3156 ms
form_validation.js
3388 ms
ados.js
59 ms
remcover.cgi
557 ms
wrox_logo.gif
64 ms
bttn_go.gif
484 ms
shop-cart.gif
65 ms
spacer.gif
64 ms
go.gif
46 ms
need_to_download_code_NEW.gif
465 ms
spacer.gif
45 ms
p2p_community.gif
600 ms
WroxSocialMedia-155x45.jpg
465 ms
ebook_feature2a.jpg
445 ms
rss_feed_icon.gif
444 ms
remcover.cgi
579 ms
remcover.cgi
596 ms
remcover.cgi
595 ms
remcover.cgi
574 ms
remcover.cgi
801 ms
ados
530 ms
1118261364.jpg
252 ms
1118794753.jpg
288 ms
111909660X.jpg
404 ms
1118987241.jpg
1119 ms
1119096685.jpg
1235 ms
columns_shadow_NEW.jpg
1467 ms
1118714709.jpg
1431 ms
bg_nav.gif
783 ms
bg_nav_current_left.gif
819 ms
bg_nav_current_right.gif
817 ms
top_left.gif
705 ms
top_right.gif
704 ms
divider.gif
704 ms
bottom_nofoot.gif
705 ms
bottom_right_nofoot.gif
492 ms
gradient_home_NEW2.gif
492 ms
gradient_bottom_NEW.gif
492 ms
db1c7013a57b4e3385c1cd1270d5ddd7.jpg
220 ms
i.gif
519 ms
amc.js
151 ms
sitecatalyst.js
86 ms
ga.js
647 ms
__utm.gif
226 ms
s75862096608616
83 ms
wrox.com 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-*] attributes do not match their roles
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
[id] attributes on active, focusable elements are not unique
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
Links do not have a discernible name
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.
wrox.com 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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
wrox.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
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
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wrox.com 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 Wrox.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
wrox.com
Open Graph description is not detected on the main page of Wrox. 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: