1.7 sec in total
217 ms
1.2 sec
294 ms
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Visit iphoneapps.oreilly.comWe analyzed Iphoneapps.oreilly.com page load time and found that the first response time was 217 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
iphoneapps.oreilly.com performance score
name
value
score
weighting
Value3.0 s
50/100
10%
Value6.6 s
8/100
25%
Value9.7 s
11/100
10%
Value1,060 ms
25/100
30%
Value0.001
100/100
15%
Value19.3 s
2/100
10%
217 ms
168 ms
200 ms
163 ms
5 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Iphoneapps.oreilly.com, 25% (14 requests) were made to Oreilly.com and 23% (13 requests) were made to Cdn.oreilly.com. The less responsive or slowest element that took the longest time to load (609 ms) relates to the external source Cdn.oreilly.com.
Page size can be reduced by 200.0 kB (40%)
496.8 kB
296.8 kB
In fact, the total size of Iphoneapps.oreilly.com main page is 496.8 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. 35% of websites need less resources to load. Images take 241.4 kB which makes up the majority of the site volume.
Potential reduce by 17.6 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 17.6 kB or 72% of the original size.
Potential reduce by 31.4 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, Iphoneapps O Reilly needs image optimization as it can save up to 31.4 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 149.5 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 149.5 kB or 65% of the original size.
Potential reduce by 1.6 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. Iphoneapps.oreilly.com needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 71% of the original size.
Number of requests can be reduced by 19 (53%)
36
17
The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iphoneapps O Reilly. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
iphoneapps.oreilly.com
217 ms
tabs.css
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readspeaker.js
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iphoneapps.css
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sharethis.js
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urchin.js
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blogger.js
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oreillyiphone.json
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iphoneapps.css
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iphoneapps.oreilly.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
iphoneapps.oreilly.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
iphoneapps.oreilly.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 Iphoneapps.oreilly.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 Iphoneapps.oreilly.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.
iphoneapps.oreilly.com
Open Graph description is not detected on the main page of Iphoneapps O Reilly. 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: