3.3 sec in total
287 ms
2.7 sec
245 ms
Click here to check amazing Pages ZEISS content for Germany. Otherwise, check out these important facts you probably never knew about pages.zeiss.com
ZEISS is an international leading technology enterprise operating in the optics and optoelectronics industries.
Visit pages.zeiss.comWe analyzed Pages.zeiss.com page load time and found that the first response time was 287 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
pages.zeiss.com performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value12.3 s
0/100
25%
Value24.1 s
0/100
10%
Value23,710 ms
0/100
30%
Value0.002
100/100
15%
Value35.1 s
0/100
10%
287 ms
641 ms
302 ms
296 ms
292 ms
Our browser made a total of 50 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Pages.zeiss.com, 80% (40 requests) were made to Zeiss.com and 8% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (940 ms) relates to the external source Zeiss.com.
Page size can be reduced by 643.5 kB (42%)
1.5 MB
872.8 kB
In fact, the total size of Pages.zeiss.com main page is 1.5 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. 30% of websites need less resources to load. Images take 669.4 kB which makes up the majority of the site volume.
Potential reduce by 34.7 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 6.9 kB, which is 16% 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 34.7 kB or 81% of the original size.
Potential reduce by 28.7 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. Pages ZEISS images are well optimized though.
Potential reduce by 418.6 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 418.6 kB or 69% of the original size.
Potential reduce by 161.5 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. Pages.zeiss.com needs all CSS files to be minified and compressed as it can save up to 161.5 kB or 82% of the original size.
Number of requests can be reduced by 19 (44%)
43
24
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pages 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.
pages.zeiss.com
287 ms
home.html
641 ms
zeiss-corporate.css
302 ms
zeiss-corporate.css2.css
296 ms
zeiss-corporate.domino.css
292 ms
zeiss-corporate.js
787 ms
zeiss-corporate.js2.js
401 ms
munchkin.js
45 ms
analytics.js
44 ms
zeiss.logo.png
152 ms
language-switch-sprite.png
155 ms
icon.lupe.png
150 ms
stage-moment-980x448.jpg
217 ms
stage_lifesciences_448.jpg
499 ms
stage_materials_science_448.jpg
655 ms
stage_raw_materials_448.jpg
584 ms
stage_manufacturing_448.jpg
310 ms
stage_routine_448.jpg
578 ms
stage_education_448.jpg
419 ms
online-shop.png
412 ms
download.png
514 ms
support.png
519 ms
icon.linkedin.png
597 ms
icon.facebook.png
615 ms
icon.youtube.png
619 ms
icon.twitter.png
676 ms
icon.flickr.png
680 ms
icon.instagram.png
696 ms
arrow.black.png
695 ms
rating_sprite.png
698 ms
arrow.small.black.png
734 ms
rightpar_linklist_internal_link.gif
754 ms
linklist_internal_link.gif
757 ms
external_link_black.gif
773 ms
nav.footer.png
793 ms
0bff5a93-ce9b-4468-9a94-431fb03301d0.woff
896 ms
f90b67e0-ac70-41c5-9f16-d837fa32d424.woff
940 ms
collect
69 ms
munchkin.js
63 ms
collect
69 ms
collect
64 ms
link_black.gif
794 ms
5beb2de5-f02e-4d93-95f9-8dae06b289d8.woff
908 ms
arrow.white.single.png
755 ms
stage_on.png
779 ms
stage_off.png
848 ms
back-to-top.png
861 ms
collect
81 ms
visitWebPage
19 ms
ga-audiences
40 ms
pages.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
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
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
pages.zeiss.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
pages.zeiss.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pages.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 Pages.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.
pages.zeiss.com
Open Graph description is not detected on the main page of Pages ZEISS. 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: