21.4 sec in total
641 ms
20.5 sec
317 ms
Click here to check amazing Clear4 Vision content. Otherwise, check out these important facts you probably never knew about clear4vision.com
Clear4Vision is a leading online retailer of eye contact lenses. Get premium quality service, without the high-street price tag at Clear4Vision
Visit clear4vision.comWe analyzed Clear4vision.com page load time and found that the first response time was 641 ms and then it took 20.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
clear4vision.com performance score
name
value
score
weighting
Value4.2 s
20/100
10%
Value15.9 s
0/100
25%
Value11.8 s
4/100
10%
Value690 ms
44/100
30%
Value0.112
87/100
15%
Value20.9 s
2/100
10%
641 ms
11209 ms
589 ms
568 ms
575 ms
Our browser made a total of 99 requests to load all elements on the main page. We found that 71% of them (70 requests) were addressed to the original Clear4vision.com, 10% (10 requests) were made to Static.xx.fbcdn.net and 9% (9 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (11.2 sec) belongs to the original domain Clear4vision.com.
Page size can be reduced by 1.2 MB (56%)
2.2 MB
982.2 kB
In fact, the total size of Clear4vision.com main page is 2.2 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. 60% of websites need less resources to load. Images take 769.6 kB which makes up the majority of the site volume.
Potential reduce by 115.6 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. This page needs HTML code to be minified as it can gain 27.2 kB, which is 21% 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 115.6 kB or 89% of the original size.
Potential reduce by 64.5 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. Clear4 Vision images are well optimized though.
Potential reduce by 500.8 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 500.8 kB or 73% of the original size.
Potential reduce by 555.9 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. Clear4vision.com needs all CSS files to be minified and compressed as it can save up to 555.9 kB or 88% of the original size.
Number of requests can be reduced by 16 (17%)
93
77
The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clear4 Vision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
clear4vision.com
641 ms
www.clear4vision.com
11209 ms
theme-blue.css
589 ms
771cb7e1065590b96f65e286f05c29ee.css
568 ms
812314094df5bdde8d0da0184ff5bcfb.css
575 ms
b291c4e4330610498d39588d582ad718.js
622 ms
tp.widget.sync.bootstrap.min.js
16 ms
css
30 ms
sm-megamenu.js
1732 ms
ga.js
50 ms
tp.widget.bootstrap.min.js
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clr4vsn_en.png
509 ms
logo.jpg
508 ms
daily-diposal.jpg
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acuvue.jpg
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AVAIRA_2.jpg
1309 ms
soflens.jpg
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purevision.jpg
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lacelle.jpg
765 ms
dailies.jpg
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freshlook.jpg
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biomedics.jpg
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naturelle-logo.jpg
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freshkon.jpg
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1-day-acuvue-define_4.jpg
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connect.php
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y97Ig99UVTs.js
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soflens-1-day-daily-disposable_1.jpg
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soflens-1-day-daily-disposable-toric-for-astigmatism_2.jpg
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soflens_soflens_toric.jpg
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soflens-59_3.jpg
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soflens-multi-focal_2.jpg
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520 ms
clear4vision.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[role]s do not have all required [aria-*] attributes
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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.
clear4vision.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
clear4vision.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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Clear4vision.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Clear4vision.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.
clear4vision.com
Open Graph description is not detected on the main page of Clear4 Vision. 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: