2.1 sec in total
99 ms
1.9 sec
149 ms
Welcome to stemcell.com homepage info - get ready to check STEMCELL best content for China right away, or after learning these important things about stemcell.com
STEMCELL Technologies develops cell culture media, cell separation systems, instruments and other reagents for use in life sciences research.
Visit stemcell.comWe analyzed Stemcell.com page load time and found that the first response time was 99 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
stemcell.com performance score
name
value
score
weighting
Value4.5 s
15/100
10%
Value27.6 s
0/100
25%
Value15.5 s
0/100
10%
Value3,450 ms
2/100
30%
Value0.13
82/100
15%
Value35.2 s
0/100
10%
99 ms
365 ms
25 ms
14 ms
462 ms
Our browser made a total of 91 requests to load all elements on the main page. We found that 18% of them (16 requests) were addressed to the original Stemcell.com, 46% (42 requests) were made to D37irpi0df1c89.cloudfront.net and 8% (7 requests) were made to Server.iad.liveperson.net. The less responsive or slowest element that took the longest time to load (462 ms) relates to the external source D37irpi0df1c89.cloudfront.net.
Page size can be reduced by 583.2 kB (45%)
1.3 MB
709.9 kB
In fact, the total size of Stemcell.com main page is 1.3 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. 55% of websites need less resources to load. Images take 510.1 kB which makes up the majority of the site volume.
Potential reduce by 74.5 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 21.7 kB, which is 23% 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 74.5 kB or 79% of the original size.
Potential reduce by 30.3 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. STEMCELL images are well optimized though.
Potential reduce by 317.8 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 317.8 kB or 63% of the original size.
Potential reduce by 160.5 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. Stemcell.com needs all CSS files to be minified and compressed as it can save up to 160.5 kB or 86% of the original size.
Number of requests can be reduced by 51 (61%)
84
33
The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STEMCELL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
stemcell.com
99 ms
www.stemcell.com
365 ms
all-styles2!cf!d=20150212T004626.css
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stemcell.com accessibility score
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
[role]s do not have all required [aria-*] attributes
ARIA IDs are not unique
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
stemcell.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
stemcell.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stemcell.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 Stemcell.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.
stemcell.com
Open Graph description is not detected on the main page of STEMCELL. 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: