Tools & Wizards About Us

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

pages.zeiss.com

ZEISS Group

Page Load Speed

1.6 sec in total

First Response

118 ms

Resources Loaded

1.5 sec

Page Rendered

0 ms

About Website

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.com

Key Findings

We analyzed Pages.zeiss.com page load time and found that the first response time was 118 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

pages.zeiss.com performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value9,250 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value18.2 s

3/100

10%

Network Requests Diagram

pages.zeiss.com

118 ms

pages.zeiss.com

274 ms

www.zeiss.com

239 ms

home.html

639 ms

ttxp-cz-2-3-0-2-8-2-min.js

20 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 14% of them (2 requests) were addressed to the original Pages.zeiss.com, 50% (7 requests) were made to Zeiss.com and 21% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (639 ms) relates to the external source Zeiss.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 718.3 kB (64%)

Content Size

1.1 MB

After Optimization

398.5 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Pages.zeiss.com main page is 1.1 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. 50% of websites need less resources to load. Javascripts take 504.8 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 458.9 kB

  • Original 500.4 kB
  • After minification 445.2 kB
  • After compression 41.4 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 55.1 kB, which is 11% 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 458.9 kB or 92% of the original size.

JavaScript Optimization

-51%

Potential reduce by 257.6 kB

  • Original 504.8 kB
  • After minification 504.8 kB
  • After compression 247.3 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 257.6 kB or 51% of the original size.

CSS Optimization

-2%

Potential reduce by 1.8 kB

  • Original 111.6 kB
  • After minification 111.6 kB
  • After compression 109.8 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 has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 5 (50%)

Requests Now

10

After Optimization

5

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 10 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 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

pages.zeiss.com accessibility score

78

Accessibility Issues

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

High

[aria-*] attributes do not match their roles

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Some elements have a [tabindex] value greater than 0

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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

pages.zeiss.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

pages.zeiss.com SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

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 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.

Social Sharing Optimization

Open Graph data is detected on the main page of Pages ZEISS. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: