Access vwrcatalog.vwr.com. VWR, Part of Avantor - Chemicals and Laboratory Scientific Supplies

Report Summary

About Website

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

VWR International, a global laboratory supplier and distributor of chemicals, life science products, consumables, equipment, instruments, furniture, e-commerce and services

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name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value13,650 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.103

89/100

15%

TTI (Time to Interactive)

Value23.7 s

1/100

10%

257 ms

master.css

66 ms

unified_css.css

176 ms

custom.css

166 ms

headerstyles10.css

267 ms

Our browser made a total of 99 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Vwrcatalog.vwr.com, 2% (2 requests) were made to Google-analytics.com and 2% (2 requests) were made to Munchkin.marketo.net. The less responsive or slowest element that took the longest time to load (3.9 sec) relates to the external source Us.vwr.com.

Content Size

1.6 MB

After Optimization

1.3 MB

In fact, the total size of Vwrcatalog.vwr.com main page is 1.6 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 994.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 252.5 kB

Original 310.5 kB
After minification 308.4 kB
After compression 58.0 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 252.5 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 507 B

Original 994.8 kB
After minification 994.3 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. VWR Catalog images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 37.7 kB

Original 213.7 kB
After minification 213.4 kB
After compression 176.0 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 37.7 kB or 18% of the original size.

CSS Optimization

-23%

Potential reduce by 19.0 kB

Original 83.4 kB
After minification 83.4 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. Vwrcatalog.vwr.com needs all CSS files to be minified and compressed as it can save up to 19.0 kB or 23% of the original size.

Requests Now

After Optimization

The browser has sent 98 CSS, Javascripts, AJAX and image requests in order to completely render the main page of VWR Catalog. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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/).

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 Vwrcatalog.vwr.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 Vwrcatalog.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

vwrcatalog.vwr.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

VWR, Part of Avantor - Chemicals and Laboratory Scientific Supplies

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)