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Visit oreillynet.com now to see the best up-to-date O Reilly Net content and also check out these interesting facts you probably never knew about oreillynet.com
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Visit oreillynet.comWe analyzed Oreillynet.com page load time and found that the first response time was 155 ms and then it took 1.1 sec 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.
oreillynet.com performance score
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value
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weighting
Value4.2 s
20/100
10%
Value7.3 s
5/100
25%
Value13.6 s
2/100
10%
Value8,770 ms
0/100
30%
Value0.042
99/100
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Value26.6 s
0/100
10%
155 ms
69 ms
37 ms
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63 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Oreillynet.com, 42% (37 requests) were made to Cdn.oreillystatic.com and 13% (12 requests) were made to Akamaicovers.oreilly.com. The less responsive or slowest element that took the longest time to load (228 ms) relates to the external source Content.atomz.com.
Page size can be reduced by 598.6 kB (53%)
1.1 MB
531.6 kB
In fact, the total size of Oreillynet.com 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. 70% of websites need less resources to load. CSS take 471.2 kB which makes up the majority of the site volume.
Potential reduce by 87.4 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 16.5 kB, which is 16% 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 87.4 kB or 83% of the original size.
Potential reduce by 74 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. O Reilly Net images are well optimized though.
Potential reduce by 148.7 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 148.7 kB or 60% of the original size.
Potential reduce by 362.4 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. Oreillynet.com needs all CSS files to be minified and compressed as it can save up to 362.4 kB or 77% of the original size.
Number of requests can be reduced by 56 (64%)
87
31
The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O Reilly Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
oreillynet.com
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oreillynet.com accessibility score
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
Links do not have a discernible name
oreillynet.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
oreillynet.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
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oreillynet.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 Oreillynet.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.
oreillynet.com
Open Graph description is not detected on the main page of O Reilly Net. 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: