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)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value13.6 s

0/100

25%

SI (Speed Index)

Value5.1 s

61/100

10%

TBT (Total Blocking Time)

Value5,130 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.322

36/100

15%

TTI (Time to Interactive)

Value18.5 s

3/100

10%

210 ms

master.css

34 ms

modernizr.min.js

62 ms

jquery-3.6.1.min.js

47 ms

jquery-migrate-3.4.0.min.js

46 ms

Our browser made a total of 94 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, 1% (1 request) were made to Assets.adobedtm.com and 1% (1 request) were made to Cdn.auth0.com. The less responsive or slowest element that took the longest time to load (234 ms) relates to the external source Googletagmanager.com.

Content Size

2.1 MB

After Optimization

1.7 MB

In fact, the total size of Vwrcatalog.vwr.com main page is 2.1 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 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 220.7 kB

Original 295.4 kB
After minification 294.8 kB
After compression 74.8 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. 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 220.7 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 8 B

Original 1.3 MB
After minification 1.3 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. VWR Catalog images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 147.0 kB

Original 415.7 kB
After minification 415.7 kB
After compression 268.6 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 147.0 kB or 35% of the original size.

CSS Optimization

-2%

Potential reduce by 1.8 kB

Original 103.4 kB
After minification 103.4 kB
After compression 101.6 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. Vwrcatalog.vwr.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 92 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 12 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

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

EN
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 it matches the claimed language. 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)