4.1 sec in total
258 ms
2.8 sec
1 sec
Click here to check amazing Premiumoffers ZEISS content for Germany. Otherwise, check out these important facts you probably never knew about premiumoffers.zeiss.com
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Visit premiumoffers.zeiss.comWe analyzed Premiumoffers.zeiss.com page load time and found that the first response time was 258 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
premiumoffers.zeiss.com performance score
name
value
score
weighting
Value4.0 s
23/100
10%
Value11.9 s
0/100
25%
Value20.0 s
0/100
10%
Value26,510 ms
0/100
30%
Value0.002
100/100
15%
Value35.6 s
0/100
10%
258 ms
152 ms
865 ms
33 ms
265 ms
Our browser made a total of 55 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Premiumoffers.zeiss.com, 67% (37 requests) were made to Images.zeiss.com and 27% (15 requests) were made to Zeiss.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Images.zeiss.com.
Page size can be reduced by 188.3 kB (29%)
640.5 kB
452.2 kB
In fact, the total size of Premiumoffers.zeiss.com main page is 640.5 kB. 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 356.1 kB which makes up the majority of the site volume.
Potential reduce by 182.3 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 49.1 kB, which is 24% 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 182.3 kB or 91% of the original size.
Potential reduce by 112 B
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. Premiumoffers ZEISS images are well optimized though.
Potential reduce by 5.8 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 5.8 kB or 21% of the original size.
Potential reduce by 24 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. Premiumoffers.zeiss.com has all CSS files already compressed.
Number of requests can be reduced by 4 (9%)
46
42
The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Premiumoffers ZEISS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
premiumoffers.zeiss.com
258 ms
vision
152 ms
home.html
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clientlibmain.7f153ff2a8c3e4db94f6db195149d8cc.css
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premiumoffers.zeiss.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
[aria-*] attributes do not match their roles
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
premiumoffers.zeiss.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
premiumoffers.zeiss.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
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Premiumoffers.zeiss.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 Premiumoffers.zeiss.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.
premiumoffers.zeiss.com
Open Graph data is detected on the main page of Premiumoffers ZEISS. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: