Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

visionlux.net

Visionlux | Industrial LED Lighting Solution for Machine Vision & Inspection

Page Load Speed

25.7 sec in total

First Response

550 ms

Resources Loaded

24.8 sec

Page Rendered

355 ms

visionlux.net screenshot

About Website

Welcome to visionlux.net homepage info - get ready to check Visionlux best content right away, or after learning these important things about visionlux.net

We Are Committed To Perform Research And Development (R&D) For New Industrial LED Lighting Solution for Machine Vision Requirements. Besides that, LED lighting and controls are designed and produced f...

Visit visionlux.net

Key Findings

We analyzed Visionlux.net page load time and found that the first response time was 550 ms and then it took 25.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

visionlux.net performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value15.4 s

0/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.133

81/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

visionlux.net

550 ms

www.visionlux.net

2228 ms

css

57 ms

bootstrap.css

247 ms

animate.css

684 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 84% of them (84 requests) were addressed to the original Visionlux.net, 5% (5 requests) were made to Fonts.gstatic.com and 4% (4 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (19.7 sec) belongs to the original domain Visionlux.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 363.0 kB (13%)

Content Size

2.7 MB

After Optimization

2.4 MB

In fact, the total size of Visionlux.net main page is 2.7 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. 60% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 81.8 kB

  • Original 96.5 kB
  • After minification 72.7 kB
  • After compression 14.8 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 23.8 kB, which is 25% 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 81.8 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 189.2 kB

  • Original 2.0 MB
  • After minification 1.9 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. Visionlux images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 81.5 kB

  • Original 503.6 kB
  • After minification 503.6 kB
  • After compression 422.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 81.5 kB or 16% of the original size.

CSS Optimization

-12%

Potential reduce by 10.5 kB

  • Original 85.2 kB
  • After minification 85.1 kB
  • After compression 74.6 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. Visionlux.net needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (54%)

Requests Now

83

After Optimization

38

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Visionlux. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

visionlux.net accessibility score

77

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-*] attributes do not match their roles

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

visionlux.net best practices score

67

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

visionlux.net SEO score

67

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Visionlux.net 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 Visionlux.net 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

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