22.4 sec in total
165 ms
13.8 sec
8.4 sec
Welcome to regular-expressions.info homepage info - get ready to check Regular Expressions best content for China right away, or after learning these important things about regular-expressions.info
At Regular-Expressions.info you will find a wide range of in-depth information about a powerful search pattern language called regular expressions.
Visit regular-expressions.infoWe analyzed Regular-expressions.info page load time and found that the first response time was 165 ms and then it took 22.2 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
regular-expressions.info performance score
name
value
score
weighting
Value1.7 s
92/100
10%
Value2.3 s
94/100
25%
Value1.7 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value1.7 s
100/100
10%
165 ms
145 ms
75 ms
91 ms
679 ms
Our browser made a total of 36 requests to load all elements on the main page. We found that 22% of them (8 requests) were addressed to the original Regular-expressions.info, 14% (5 requests) were made to Pagead2.googlesyndication.com and 11% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (4.7 sec) relates to the external source Tpc.googlesyndication.com.
Page size can be reduced by 670.3 kB (37%)
1.8 MB
1.1 MB
In fact, the total size of Regular-expressions.info main page is 1.8 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. 40% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 12.9 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. 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 12.9 kB or 73% of the original size.
Potential reduce by 67.7 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. Regular Expressions images are well optimized though.
Potential reduce by 561.8 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 561.8 kB or 54% of the original size.
Potential reduce by 28.0 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. Regular-expressions.info needs all CSS files to be minified and compressed as it can save up to 28.0 kB or 73% of the original size.
Number of requests can be reduced by 12 (35%)
34
22
The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Regular Expressions. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.
regular-expressions.info
165 ms
www.regular-expressions.info
145 ms
regex.js
75 ms
regex.css
91 ms
show_ads.js
679 ms
header100.png
65 ms
rxbtutorial100.png
70 ms
donate.png
64 ms
pgr100.png
70 ms
ca-pub-7485249680256358.js
526 ms
zrt_lookup.html
2317 ms
show_ads_impl.js
417 ms
ads
852 ms
osd.js
247 ms
log
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adServer.bs
3113 ms
m_window_focus_non_hydra.js
3096 ms
osd_listener.js
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m_qs_click_protection.js
4707 ms
q
2423 ms
ads
907 ms
ads
2215 ms
adServer.bs
917 ms
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a-logo-amazon.png
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51Ehf-BNF8L._AC_AC_SR98,95_.jpg
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prime.png
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cart.gif
2165 ms
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json
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adServer.bs
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transparent.png
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cookie_push.html
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dpixel
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regular-expressions.info accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
regular-expressions.info best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
regular-expressions.info SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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 Regular-expressions.info 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 Regular-expressions.info 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.
regular-expressions.info
Open Graph description is not detected on the main page of Regular Expressions. 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: