7.8 sec in total
487 ms
7 sec
254 ms
Visit zoll.co.nz now to see the best up-to-date ZOLL content and also check out these interesting facts you probably never knew about zoll.co.nz
For over 25 years, ZOLL has been a leader in developing medical devices and software solutions that advance emergency care and help save lives. Learn more about our resuscitation and critical care sol...
Visit zoll.co.nzWe analyzed Zoll.co.nz page load time and found that the first response time was 487 ms and then it took 7.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
zoll.co.nz performance score
name
value
score
weighting
Value4.3 s
17/100
10%
Value17.8 s
0/100
25%
Value9.8 s
10/100
10%
Value1,010 ms
27/100
30%
Value0.317
36/100
15%
Value16.9 s
5/100
10%
487 ms
371 ms
1498 ms
187 ms
183 ms
Our browser made a total of 151 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Zoll.co.nz, 45% (68 requests) were made to Zoll.com and 9% (13 requests) were made to D.adroll.com. The less responsive or slowest element that took the longest time to load (3.1 sec) relates to the external source Zoll.com.
Page size can be reduced by 557.4 kB (6%)
9.4 MB
8.9 MB
In fact, the total size of Zoll.co.nz main page is 9.4 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 8.8 MB which makes up the majority of the site volume.
Potential reduce by 179.8 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 92.0 kB, which is 46% 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 179.8 kB or 90% of the original size.
Potential reduce by 185.4 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. ZOLL images are well optimized though.
Potential reduce by 191.5 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 191.5 kB or 49% of the original size.
Potential reduce by 691 B
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. Zoll.co.nz has all CSS files already compressed.
Number of requests can be reduced by 65 (51%)
128
63
The browser has sent 128 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZOLL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
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487 ms
371 ms
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zoll.co.nz 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
[aria-*] attributes do not match their roles
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
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
zoll.co.nz 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
User Experience
Impact
Issue
Serves images with low resolution
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
zoll.co.nz 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 Zoll.co.nz 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 Zoll.co.nz 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.
zoll.co.nz
Open Graph description is not detected on the main page of ZOLL. 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: