37.1 sec in total
2.4 sec
34.4 sec
270 ms
Click here to check amazing 4 U Usb content. Otherwise, check out these important facts you probably never knew about 4u-usb.com
Visit 4u-usb.comWe analyzed 4u-usb.com page load time and found that the first response time was 2.4 sec and then it took 34.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
4u-usb.com performance score
name
value
score
weighting
Value2.9 s
54/100
10%
Value24.0 s
0/100
25%
Value4.9 s
64/100
10%
Value330 ms
75/100
30%
Value0.089
92/100
15%
Value39.1 s
0/100
10%
2404 ms
5346 ms
127 ms
219 ms
157 ms
Our browser made a total of 154 requests to load all elements on the main page. We found that all of those requests were addressed to 4u-usb.com and no external sources were called. The less responsive or slowest element that took the longest time to load (11.9 sec) belongs to the original domain 4u-usb.com.
Page size can be reduced by 391.8 kB (6%)
6.6 MB
6.2 MB
In fact, the total size of 4u-usb.com main page is 6.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 6.6 MB which makes up the majority of the site volume.
Potential reduce by 31.7 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 31.7 kB or 87% of the original size.
Potential reduce by 359.4 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. 4 U Usb images are well optimized though.
Potential reduce by 620 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. 4u-usb.com needs all CSS files to be minified and compressed as it can save up to 620 B or 71% of the original size.
Number of requests can be reduced by 8 (5%)
152
144
The browser has sent 152 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 4 U Usb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
4u-usb.com
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4u-usb.com 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
[lang] attributes do not have a valid value
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
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.
4u-usb.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
4u-usb.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
JA
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 4u-usb.com can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 4u-usb.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
4u-usb.com
Open Graph description is not detected on the main page of 4 U Usb. 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: