Tools & Wizards About Us
control-optics.com screenshot

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

control-optics.com

COT - Custom Precision Optics Manufacturer from Control Optics Taiwan Inc.

Page Load Speed

8 sec in total

First Response

494 ms

Resources Loaded

6.8 sec

Page Rendered

628 ms

control-optics.com screenshot

About Website

Visit control-optics.com now to see the best up-to-date Control Optics content and also check out these interesting facts you probably never knew about control-optics.com

Control Optics Taiwan (COT) was established in 1986. We are specialized in research, development and production of various kinds of precision optics. We look forward to become your most valuable partn...

Visit control-optics.com

Key Findings

We analyzed Control-optics.com page load time and found that the first response time was 494 ms and then it took 7.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

control-optics.com performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value310 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value1

2/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

Network Requests Diagram

control-optics.com

494 ms

www.control-optics.com

866 ms

bootstrap.min.css

1034 ms

font-awesome.min.css

805 ms

owl.carousel.css

808 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 74% of them (50 requests) were addressed to the original Control-optics.com, 9% (6 requests) were made to Profiles.dunsregistered.com and 7% (5 requests) were made to Goshop.gtut.com.tw. The less responsive or slowest element that took the longest time to load (3.5 sec) belongs to the original domain Control-optics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 99.8 kB (7%)

Content Size

1.5 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Control-optics.com main page is 1.5 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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 47.4 kB

  • Original 55.8 kB
  • After minification 37.8 kB
  • After compression 8.4 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 18.0 kB, which is 32% 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 47.4 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 40.4 kB

  • Original 1.3 MB
  • After minification 1.2 MB

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. Control Optics images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 7.0 kB

  • Original 104.1 kB
  • After minification 104.1 kB
  • After compression 97.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-10%

Potential reduce by 5.1 kB

  • Original 52.1 kB
  • After minification 52.1 kB
  • After compression 47.0 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. Control-optics.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 30 (48%)

Requests Now

63

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Control 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 20 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

control-optics.com

control-optics.com

494 ms

www.control-optics.com

www.control-optics.com

866 ms

bootstrap.min.css

bootstrap.min.css

1034 ms

font-awesome.min.css

font-awesome.min.css

805 ms

owl.carousel.css

owl.carousel.css

808 ms

owl.theme.css

owl.theme.css

834 ms

responsive-tables.css

responsive-tables.css

886 ms

jquery.lightbox-0.5.css

jquery.lightbox-0.5.css

821 ms

style.css

style.css

1747 ms

socicon.css

socicon.css

1576 ms

lang-en.css

lang-en.css

1399 ms

gdpr.js

gdpr.js

751 ms

gdpr.init.js

gdpr.init.js

761 ms

jquery-1.11.1.min.js

jquery-1.11.1.min.js

952 ms

jquery.validationEngine-en.js

jquery.validationEngine-en.js

956 ms

jquery.validationEngine.js

jquery.validationEngine.js

945 ms

script.js

script.js

959 ms

bootstrap.min.js

bootstrap.min.js

1667 ms

member.js

member.js

1736 ms

cart.js

cart.js

1913 ms

pgwslideshow.js

pgwslideshow.js

2170 ms

jquery_lazyload.js

jquery_lazyload.js

2426 ms

jquery.lightbox-0.5.min.js

jquery.lightbox-0.5.min.js

2407 ms

jquery.responsive-tables.min.js

jquery.responsive-tables.min.js

2503 ms

bootstrap-tabcollapse.js

bootstrap-tabcollapse.js

2501 ms

owl.carousel.min.js

owl.carousel.min.js

2600 ms

matchMedia.js

matchMedia.js

3060 ms

main.js

main.js

2966 ms

pgwslideshow.css

pgwslideshow.css

3508 ms

validationEngine.jquery.css

validationEngine.jquery.css

955 ms

api.js

api.js

12 ms

SealAuthentication.aspx

SealAuthentication.aspx

501 ms

1616730828.jpg

1616730828.jpg

753 ms

1560411105.jpg

1560411105.jpg

754 ms

index-main-bg.jpg

index-main-bg.jpg

768 ms

1540876890.jpg

1540876890.jpg

763 ms

1551881814.jpg

1551881814.jpg

773 ms

1541484702.jpg

1541484702.jpg

779 ms

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1541484713.jpg

786 ms

1541484720.jpg

1541484720.jpg

788 ms

1541484726.jpg

1541484726.jpg

793 ms

1541484733.jpg

1541484733.jpg

797 ms

1541484740.jpg

1541484740.jpg

802 ms

1541484746.jpg

1541484746.jpg

815 ms

1541484752.jpg

1541484752.jpg

813 ms

1634887048.png

1634887048.png

826 ms

1634887680.png

1634887680.png

825 ms

1634887696.png

1634887696.png

835 ms

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1634887712.png

833 ms

1634887732.png

1634887732.png

837 ms

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1634887748.png

842 ms

1634887762.png

1634887762.png

843 ms

1634887774.png

1634887774.png

847 ms

index-staff.jpg

index-staff.jpg

860 ms

index-staff-xs.jpg

index-staff-xs.jpg

854 ms

footer-bg.jpg

footer-bg.jpg

859 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

2154 ms

Socicon.ttf

Socicon.ttf

1954 ms

TpSeal.aspx

TpSeal.aspx

577 ms

xdgfkjghdf.png

xdgfkjghdf.png

328 ms

mxfdjhkgd.png

mxfdjhkgd.png

290 ms

dsxyhlkyl.png

dsxyhlkyl.png

259 ms

poixfdgsfdgCT.gif

poixfdgsfdgCT.gif

415 ms

dsafxhgljhkl.png

dsafxhgljhkl.png

412 ms

1542085823.png

1542085823.png

16 ms

tarteaucitron.css

tarteaucitron.css

730 ms

tarteaucitron.zh.js

tarteaucitron.zh.js

729 ms

tarteaucitron.services.js

tarteaucitron.services.js

743 ms

Accessibility Review

control-optics.com accessibility score

94

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<frame> or <iframe> elements do not have a title

Best Practices

control-optics.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

control-optics.com SEO score

91

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Control-optics.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 Control-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.

Social Sharing Optimization

control-optics.com

Open Graph data is detected on the main page of Control Optics. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: