7.1 sec in total
493 ms
6.2 sec
407 ms
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Visit serial-online.netWe analyzed Serial-online.net page load time and found that the first response time was 493 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
serial-online.net performance score
name
value
score
weighting
Value9.2 s
0/100
10%
Value12.2 s
0/100
25%
Value26.2 s
0/100
10%
Value570 ms
52/100
30%
Value0.001
100/100
15%
Value14.2 s
9/100
10%
493 ms
927 ms
1266 ms
1007 ms
1335 ms
Our browser made a total of 19 requests to load all elements on the main page. We found that 16% of them (3 requests) were addressed to the original Serial-online.net, 63% (12 requests) were made to 4un.net and 5% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source 4un.net.
Page size can be reduced by 76.2 kB (28%)
273.9 kB
197.7 kB
In fact, the total size of Serial-online.net main page is 273.9 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. Only 10% of websites need less resources to load. Javascripts take 131.6 kB which makes up the majority of the site volume.
Potential reduce by 75.2 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 75.2 kB or 88% of the original size.
Potential reduce by 735 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. Serial Online images are well optimized though.
Potential reduce by 172 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 94 B
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. Serial-online.net has all CSS files already compressed.
Number of requests can be reduced by 6 (50%)
12
6
The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Serial Online. 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.
serial-online.net
493 ms
serial-online.net
927 ms
4un.net
1266 ms
style.css
1007 ms
jquery.js
1335 ms
global.js
824 ms
js
101 ms
tj.js
820 ms
email-decode.min.js
19 ms
111.png
988 ms
ccb1f3321ed6ff6334ce3b8ac9de51f4.png
1086 ms
iconfont.woff
784 ms
layer.css
870 ms
111.png
17 ms
gg.js
11 ms
js-sdk-pro.min.js
1154 ms
sc.js
270 ms
111.png
615 ms
111.png
22 ms
serial-online.net accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
serial-online.net 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
serial-online.net 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
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
Tap targets are not sized appropriately
JA
ZH
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Serial-online.net can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed Chinese language. Our system also found out that Serial-online.net 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.
serial-online.net
Open Graph data is detected on the main page of Serial Online. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: