Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

it.vwr.com

VWR, Part of Avantor - Reagenti e prodotti chimici per laboratorio

Page Load Speed

9.8 sec in total

First Response

55 ms

Resources Loaded

9.3 sec

Page Rendered

400 ms

it.vwr.com screenshot

About Website

Click here to check amazing It VWR content for United States. Otherwise, check out these important facts you probably never knew about it.vwr.com

VWR part of Avantor Azienda multinazionale leader nelle forniture e nella distribuzione di prodotti chimici, prodotti e materiali per il laboratorio, life-science, strumentazione, arredi per il labora...

Visit it.vwr.com

Key Findings

We analyzed It.vwr.com page load time and found that the first response time was 55 ms and then it took 9.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

it.vwr.com performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value6.2 s

44/100

10%

TBT (Total Blocking Time)

Value1,680 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.404

25/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

it.vwr.com

55 ms

it.vwr.com

50 ms

332 ms

master.css

59 ms

unified_css.css

55 ms

Our browser made a total of 102 requests to load all elements on the main page. We found that 94% of them (96 requests) were addressed to the original It.vwr.com, 2% (2 requests) were made to Googletagmanager.com and 1% (1 request) were made to C.la2c1.salesforceliveagent.com. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain It.vwr.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 340.4 kB (15%)

Content Size

2.2 MB

After Optimization

1.9 MB

In fact, the total size of It.vwr.com main page is 2.2 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. 70% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 289.2 kB

  • Original 362.8 kB
  • After minification 360.2 kB
  • After compression 73.6 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 289.2 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 1.6 kB

  • Original 1.6 MB
  • After minification 1.6 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. It VWR images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 30.6 kB

  • Original 168.3 kB
  • After minification 168.3 kB
  • After compression 137.7 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 30.6 kB or 18% of the original size.

CSS Optimization

-23%

Potential reduce by 18.9 kB

  • Original 83.3 kB
  • After minification 83.3 kB
  • After compression 64.4 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. It.vwr.com needs all CSS files to be minified and compressed as it can save up to 18.9 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (14%)

Requests Now

99

After Optimization

85

The browser has sent 99 CSS, Javascripts, AJAX and image requests in order to completely render the main page of It VWR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

it.vwr.com accessibility score

96

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

Best Practices

it.vwr.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

it.vwr.com SEO score

98

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    IT

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise It.vwr.com can be misinterpreted by Google and other search engines. Our service has detected that Italian 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 It.vwr.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

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