1.4 sec in total
178 ms
1.1 sec
116 ms
Visit missingmanuals.com now to see the best up-to-date Missing Manuals content and also check out these interesting facts you probably never knew about missingmanuals.com
O'Reilly's Missing Manual series are beautifully written manuals with a casual, user-friendly tone for popular consumer software and hardware products.
Visit missingmanuals.comWe analyzed Missingmanuals.com page load time and found that the first response time was 178 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
missingmanuals.com performance score
name
value
score
weighting
Value3.0 s
50/100
10%
Value3.9 s
51/100
25%
Value3.3 s
90/100
10%
Value70 ms
99/100
30%
Value0.003
100/100
15%
Value4.5 s
83/100
10%
178 ms
287 ms
145 ms
151 ms
29 ms
Our browser made a total of 46 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Missingmanuals.com, 50% (23 requests) were made to Oreilly.com and 24% (11 requests) were made to Cdn.oreillystatic.com. The less responsive or slowest element that took the longest time to load (287 ms) relates to the external source Oreilly.com.
Page size can be reduced by 37.8 kB (25%)
150.4 kB
112.7 kB
In fact, the total size of Missingmanuals.com main page is 150.4 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. 40% of websites need less resources to load. Images take 76.5 kB which makes up the majority of the site volume.
Potential reduce by 11.0 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 11.0 kB or 72% of the original size.
Potential reduce by 310 B
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. Missing Manuals images are well optimized though.
Potential reduce by 11.5 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 11.5 kB or 29% of the original size.
Potential reduce by 14.9 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. Missingmanuals.com needs all CSS files to be minified and compressed as it can save up to 14.9 kB or 81% of the original size.
Number of requests can be reduced by 13 (52%)
25
12
The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Missing Manuals. 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.
missingmanuals.com
178 ms
287 ms
missingmanuals.css
145 ms
mmwidget.css
151 ms
jquery.min.js
29 ms
jquery-ui.min.js
48 ms
title-scroll-2.js
144 ms
s_code.js
27 ms
utilities.js
11 ms
datasource-min.js
20 ms
autocomplete-min.js
22 ms
autocomplete_data.js
182 ms
quant.js
5 ms
mm_header.png
57 ms
yourmoney.png
100 ms
curved-divider-gray.png
221 ms
curved-divider-gray-corner-bl.png
195 ms
oreilly-logo-black-104x18.png
3 ms
searchshadow.png
4 ms
search.png
5 ms
nav_background.png
4 ms
curved-divider-white.png
6 ms
CD.png
6 ms
devices_ebooks.png
4 ms
mm-shelf.png
6 ms
windows7.png
6 ms
widgetbkg.png
181 ms
pixel;r=446798387;a=p-20l78bOOCbhcg;fpan=1;fpa=P0-1998391132-1458162768388;ns=0;ce=1;cm=;je=0;sr=1024x768x32;enc=n;dst=0;et=1458162768388;tzo=-180;ref=;url=http%3A%2F%2Fwww.oreilly.com%2Fmissingmanuals%2F;ogl=title.Missing%20Manuals%2Ctype.article%2Cimage.http%3A%2F%2Fcdn%252Eoreillystatic%252Ecom%2Foreilly%2Fimages%2Foreilly-social-icon-200%252Epng
16 ms
thumb.gif
24 ms
item-list-divider.png
145 ms
item-list-left-bg.png
146 ms
item-list-left-arrow.png
147 ms
item-list-right-bg.png
148 ms
item-list-right-arrow.png
199 ms
item-list-scroll-bg.png
197 ms
item-list-scroll-handle.png
217 ms
s55599317967426
39 ms
curved-divider-gray.png
100 ms
curved-divider-gray-corner-bl.png
246 ms
item-list-divider.png
256 ms
item-list-left-bg.png
256 ms
item-list-left-arrow.png
247 ms
item-list-right-bg.png
234 ms
item-list-scroll-bg.png
125 ms
item-list-right-arrow.png
222 ms
item-list-scroll-handle.png
249 ms
missingmanuals.com accessibility score
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
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
Form elements do not have associated labels
Links do not have a discernible name
<object> elements do not have alternate text
missingmanuals.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
missingmanuals.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Document uses plugins
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Missingmanuals.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 Missingmanuals.com 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.
missingmanuals.com
Open Graph description is not detected on the main page of Missing Manuals. 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: