10.4 sec in total
3.2 sec
7 sec
157 ms
Visit precision-vision.com now to see the best up-to-date Precision Vision content for United States and also check out these interesting facts you probably never knew about precision-vision.com
Precision Vision has provided quality vision testing tools for more than 40 years to researchers and eye care professionals around the world.
Visit precision-vision.comWe analyzed Precision-vision.com page load time and found that the first response time was 3.2 sec and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
precision-vision.com performance score
name
value
score
weighting
Value3.8 s
28/100
10%
Value4.0 s
50/100
25%
Value4.0 s
81/100
10%
Value20 ms
100/100
30%
Value0.001
100/100
15%
Value4.1 s
87/100
10%
3213 ms
105 ms
109 ms
176 ms
25 ms
Our browser made a total of 115 requests to load all elements on the main page. We found that 77% of them (89 requests) were addressed to the original Precision-vision.com, 8% (9 requests) were made to Static.olark.com and 3% (4 requests) were made to 893-events.olark.com. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Precision-vision.com.
Page size can be reduced by 1.0 MB (55%)
1.9 MB
858.4 kB
In fact, the total size of Precision-vision.com main page is 1.9 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. Javascripts take 754.6 kB which makes up the majority of the site volume.
Potential reduce by 156.0 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 156.0 kB or 80% of the original size.
Potential reduce by 66.9 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, Precision Vision needs image optimization as it can save up to 66.9 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 489.4 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 489.4 kB or 65% of the original size.
Potential reduce by 335.0 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. Precision-vision.com needs all CSS files to be minified and compressed as it can save up to 335.0 kB or 77% of the original size.
Number of requests can be reduced by 53 (49%)
108
55
The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Precision 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 32 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.
precision-vision.com
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precision-vision.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
[aria-*] attributes do not match their roles
precision-vision.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
precision-vision.com SEO score
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Precision-vision.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 Precision-vision.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.
precision-vision.com
Open Graph data is detected on the main page of Precision Vision. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: