Tools & Wizards About Us
lvroptical.com screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

lvroptical.com

Laser and Optical Radiation Safety Expertise | LVR Optical

Page Load Speed

2.6 sec in total

First Response

311 ms

Resources Loaded

2.2 sec

Page Rendered

116 ms

lvroptical.com screenshot

About Website

Welcome to lvroptical.com homepage info - get ready to check LVR Optical best content right away, or after learning these important things about lvroptical.com

Laser and optical radiation safety expertise. Laser Protection Adviser and Certified Laser Safety Officer. Laser emissions and risk interpretation, UV, IR

Visit lvroptical.com

Key Findings

We analyzed Lvroptical.com page load time and found that the first response time was 311 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

lvroptical.com performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

42/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value640 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

lvroptical.com

311 ms

lvroptical.com

465 ms

www.lvroptical.com

485 ms

bootstrap.css

439 ms

LVROptical.css

336 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 71% of them (15 requests) were addressed to the original Lvroptical.com, 10% (2 requests) were made to Googletagmanager.com and 10% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (631 ms) belongs to the original domain Lvroptical.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 343.9 kB (41%)

Content Size

837.0 kB

After Optimization

493.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lvroptical.com main page is 837.0 kB. 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 488.2 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 10.7 kB

  • Original 14.5 kB
  • After minification 12.5 kB
  • After compression 3.8 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 2.0 kB, which is 14% 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 10.7 kB or 74% of the original size.

Image Optimization

-17%

Potential reduce by 84.8 kB

  • Original 488.2 kB
  • After minification 403.4 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. Obviously, LVR Optical needs image optimization as it can save up to 84.8 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 121.0 kB

  • Original 186.7 kB
  • After minification 164.4 kB
  • After compression 65.6 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 121.0 kB or 65% of the original size.

CSS Optimization

-86%

Potential reduce by 127.4 kB

  • Original 147.7 kB
  • After minification 122.8 kB
  • After compression 20.3 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. Lvroptical.com needs all CSS files to be minified and compressed as it can save up to 127.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (25%)

Requests Now

16

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LVR Optical. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

lvroptical.com

lvroptical.com

311 ms

lvroptical.com

lvroptical.com

465 ms

www.lvroptical.com

www.lvroptical.com

485 ms

bootstrap.css

bootstrap.css

439 ms

LVROptical.css

LVROptical.css

336 ms

js

js

91 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

631 ms

bootstrap.js

bootstrap.js

585 ms

si.js

si.js

5 ms

getgeotrustsslseal

getgeotrustsslseal

5 ms

js

js

77 ms

analytics.js

analytics.js

22 ms

lvr%20optical%20Logo.png

lvr%20optical%20Logo.png

116 ms

IndexProfiler3D.png

IndexProfiler3D.png

402 ms

IndexOptical.png

IndexOptical.png

436 ms

IndexTrain2.png

IndexTrain2.png

462 ms

IndexBenthamGraph.png

IndexBenthamGraph.png

438 ms

glyphicons-social-14-e-mail-envelope.png

glyphicons-social-14-e-mail-envelope.png

318 ms

glyphicons-social-31-facebook.png

glyphicons-social-31-facebook.png

327 ms

LVRWebNavBar.png

LVRWebNavBar.png

426 ms

collect

collect

12 ms

Accessibility Review

lvroptical.com accessibility score

91

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

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

lvroptical.com best practices score

75

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

High

Browser errors were logged to the console

SEO Factors

lvroptical.com SEO score

100

Search Engine Optimization Advices

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

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 Lvroptical.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 Lvroptical.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

lvroptical.com

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