4.4 sec in total
204 ms
3.7 sec
491 ms
Welcome to optical-world.com homepage info - get ready to check Optical World best content for Chile right away, or after learning these important things about optical-world.com
professional optical products manufacturer, focusing on producing high quality dental loupes, surgical loupes and LED headlights, binoculars cover all the range from 2.5x-8.0x with manufacturer direct...
Visit optical-world.comWe analyzed Optical-world.com page load time and found that the first response time was 204 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster. This domain responded with an error, which can significantly jeopardize Optical-world.com rating and web reputation
optical-world.com performance score
name
value
score
weighting
Value4.2 s
20/100
10%
Value12.5 s
0/100
25%
Value7.3 s
29/100
10%
Value350 ms
73/100
30%
Value0.006
100/100
15%
Value10.4 s
24/100
10%
204 ms
1309 ms
130 ms
208 ms
143 ms
Our browser made a total of 141 requests to load all elements on the main page. We found that 94% of them (133 requests) were addressed to the original Optical-world.com, 2% (3 requests) were made to Google-analytics.com and 2% (3 requests) were made to Chatserver.comm100.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Service.kancart.com.
Page size can be reduced by 337.8 kB (30%)
1.1 MB
784.5 kB
In fact, the total size of Optical-world.com main page is 1.1 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. 45% of websites need less resources to load. Images take 782.2 kB which makes up the majority of the site volume.
Potential reduce by 81.9 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 81.9 kB or 85% of the original size.
Potential reduce by 83.8 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, Optical World needs image optimization as it can save up to 83.8 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 114.5 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 114.5 kB or 67% of the original size.
Potential reduce by 57.6 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. Optical-world.com needs all CSS files to be minified and compressed as it can save up to 57.6 kB or 79% of the original size.
Number of requests can be reduced by 41 (30%)
138
97
The browser has sent 138 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical World. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.
optical-world.com
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optical-world.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.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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
Form elements do not have associated labels
Links do not have a discernible name
optical-world.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
Browser errors were logged to the console
optical-world.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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Optical-world.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 Optical-world.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.
optical-world.com
Open Graph description is not detected on the main page of Optical World. 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: