7.5 sec in total
590 ms
6.7 sec
250 ms
Click here to check amazing Core Optic content. Otherwise, check out these important facts you probably never knew about coreoptic.com
Ningbo China Core Optic Co.Ltd is a professional fiber optic supplier in China.If you are looking for fiber optic manufacturer, fiber-optic-passives supplier,fiber active products, fiber optic test in...
Visit coreoptic.comWe analyzed Coreoptic.com page load time and found that the first response time was 590 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
coreoptic.com performance score
name
value
score
weighting
Value2.5 s
65/100
10%
Value5.9 s
14/100
25%
Value6.1 s
44/100
10%
Value360 ms
72/100
30%
Value0
100/100
15%
Value5.5 s
70/100
10%
590 ms
298 ms
199 ms
458 ms
291 ms
Our browser made a total of 59 requests to load all elements on the main page. We found that 88% of them (52 requests) were addressed to the original Coreoptic.com, 3% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to S11.cnzz.com. The less responsive or slowest element that took the longest time to load (2.9 sec) relates to the external source S11.cnzz.com.
Page size can be reduced by 200.1 kB (15%)
1.4 MB
1.2 MB
In fact, the total size of Coreoptic.com main page is 1.4 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. 20% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 21.3 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 21.3 kB or 79% of the original size.
Potential reduce by 52.3 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. Core Optic images are well optimized though.
Potential reduce by 114.6 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 114.6 kB or 62% of the original size.
Potential reduce by 11.9 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. Coreoptic.com needs all CSS files to be minified and compressed as it can save up to 11.9 kB or 78% of the original size.
Number of requests can be reduced by 24 (41%)
58
34
The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Core Optic. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
coreoptic.com
590 ms
base.css
298 ms
mF_expo2010.css
199 ms
jQuery-1.7.1.js
458 ms
myfocus-2.0.1.min.js
291 ms
mF_expo2010.js
187 ms
MSClass.js
208 ms
bg.gif
112 ms
logo.jpg
105 ms
esp.gif
84 ms
eng.gif
114 ms
skype.jpg
99 ms
google.jpg
91 ms
email.jpg
153 ms
yahoo.jpg
156 ms
nav_bg.gif
170 ms
home.jpg
173 ms
line.gif
180 ms
hover.gif
184 ms
s_bg.gif
227 ms
submit.gif
229 ms
menu_bg.gif
236 ms
li_bg.gif
242 ms
li_list.gif
252 ms
contact_bg.gif
256 ms
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549 ms
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587 ms
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552 ms
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536 ms
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564 ms
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653 ms
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708 ms
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649 ms
z_stat.php
2896 ms
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577 ms
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575 ms
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637 ms
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665 ms
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710 ms
copy.jpg
630 ms
b_bg.gif
628 ms
pro_title.jpg
625 ms
foot_bg.gif
648 ms
stat.htm
1112 ms
core.php
830 ms
9.gif
1953 ms
pic.gif
1093 ms
analytics.js
8 ms
collect
11 ms
coreoptic.com accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
coreoptic.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
coreoptic.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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Coreoptic.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Coreoptic.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.
coreoptic.com
Open Graph description is not detected on the main page of Core Optic. 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: