Tools & Wizards About Us
uni-optics.com screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

uni-optics.com

Spherical Lens,Custom Optical Elements,Custom Lens Design - UNI Optics

Page Load Speed

4.6 sec in total

First Response

383 ms

Resources Loaded

3.5 sec

Page Rendered

731 ms

uni-optics.com screenshot

About Website

Welcome to uni-optics.com homepage info - get ready to check UNI Optics best content right away, or after learning these important things about uni-optics.com

UNI Optics Co.,Ltd specializes in spherical lens,optical elements,custom lens design and assembly in China for many years. We have senior optical engineers team with over 10 years experience to offer ...

Visit uni-optics.com

Key Findings

We analyzed Uni-optics.com page load time and found that the first response time was 383 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 70% of websites can load faster.

Performance Metrics

uni-optics.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value16.3 s

0/100

25%

SI (Speed Index)

Value9.1 s

13/100

10%

TBT (Total Blocking Time)

Value3,120 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.426

22/100

15%

TTI (Time to Interactive)

Value21.9 s

1/100

10%

Network Requests Diagram

uni-optics.com

383 ms

uni-optics.com

281 ms

www.uni-optics.com

1045 ms

bootstrap.css

68 ms

font-awesome.min.css

103 ms

Our browser made a total of 144 requests to load all elements on the main page. We found that 90% of them (129 requests) were addressed to the original Uni-optics.com, 3% (5 requests) were made to Youtube.com and 1% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Uni-optics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 260.0 kB (8%)

Content Size

3.3 MB

After Optimization

3.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Uni-optics.com main page is 3.3 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. Only a small number of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 118.6 kB

  • Original 135.1 kB
  • After minification 72.9 kB
  • After compression 16.5 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 62.2 kB, which is 46% 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 118.6 kB or 88% of the original size.

Image Optimization

-4%

Potential reduce by 124.8 kB

  • Original 2.8 MB
  • After minification 2.7 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. UNI Optics images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 12.6 kB

  • Original 268.4 kB
  • After minification 268.4 kB
  • After compression 255.8 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

-3%

Potential reduce by 3.9 kB

  • Original 115.0 kB
  • After minification 115.0 kB
  • After compression 111.0 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. Uni-optics.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 31 (23%)

Requests Now

135

After Optimization

104

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UNI 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 26 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

uni-optics.com

uni-optics.com

383 ms

uni-optics.com

uni-optics.com

281 ms

www.uni-optics.com

www.uni-optics.com

1045 ms

bootstrap.css

bootstrap.css

68 ms

font-awesome.min.css

font-awesome.min.css

103 ms

animate.css

animate.css

101 ms

style.css

style.css

137 ms

bootstrap-touch-slider.css

bootstrap-touch-slider.css

99 ms

meanmenu.min.css

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104 ms

jquery-1.8.3.js

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107 ms

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134 ms

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132 ms

common.js

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133 ms

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134 ms

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157 ms

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166 ms

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168 ms

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167 ms

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166 ms

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170 ms

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173 ms

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175 ms

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176 ms

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38 ms

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44 ms

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44 ms

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45 ms

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443 ms

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9 ms

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28 ms

base.js

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53 ms

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467 ms

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546 ms

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205 ms

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231 ms

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105 ms

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GenerateIT

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53 ms

74 ms

Accessibility Review

uni-optics.com accessibility score

62

Accessibility Issues

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

<html> element does not have a [lang] attribute

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

uni-optics.com best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

uni-optics.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

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

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 Uni-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 Uni-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

uni-optics.com

Open Graph description is not detected on the main page of UNI 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: