5.8 sec in total
195 ms
5.3 sec
219 ms
Click here to check amazing Sunday Optics content. Otherwise, check out these important facts you probably never knew about sunday-optics.com
Changchun Sunday Optoelectronics Co., Ltd. sell Spherical Lens, Ball Lens, Plano Convex Lens, Optical Glass Window, Aspheric Lens, we have a whole set of quality management system. If you have interes...
Visit sunday-optics.comWe analyzed Sunday-optics.com page load time and found that the first response time was 195 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
sunday-optics.com performance score
name
value
score
weighting
Value2.2 s
76/100
10%
Value3.9 s
54/100
25%
Value4.7 s
70/100
10%
Value90 ms
99/100
30%
Value0.238
52/100
15%
Value10.0 s
27/100
10%
195 ms
168 ms
172 ms
18 ms
152 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that 67% of them (38 requests) were addressed to the original Sunday-optics.com, 33% (19 requests) were made to Chat.chukouplus.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Sunday-optics.com.
Page size can be reduced by 81.6 kB (7%)
1.1 MB
1.0 MB
In fact, the total size of Sunday-optics.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. 35% of websites need less resources to load. Images take 888.7 kB which makes up the majority of the site volume.
Potential reduce by 25.0 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 25.0 kB or 81% of the original size.
Potential reduce by 9.7 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. Sunday Optics images are well optimized though.
Potential reduce by 44.3 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 44.3 kB or 25% of the original size.
Potential reduce by 2.6 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. Sunday-optics.com has all CSS files already compressed.
Number of requests can be reduced by 20 (38%)
53
33
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sunday Optics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
sunday-optics.com
195 ms
www.sunday-optics.com
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sunday-optics.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
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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.
sunday-optics.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
sunday-optics.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 Sunday-optics.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 Sunday-optics.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.
sunday-optics.com
Open Graph description is not detected on the main page of Sunday Optics. 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: