Tools & Wizards About Us
zeiss.ca screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

zeiss.ca

Language Selection

Page Load Speed

2.6 sec in total

First Response

303 ms

Resources Loaded

2.2 sec

Page Rendered

90 ms

zeiss.ca screenshot

About Website

Visit zeiss.ca now to see the best up-to-date Zeiss content for Canada and also check out these interesting facts you probably never knew about zeiss.ca

Visit zeiss.ca

Key Findings

We analyzed Zeiss.ca page load time and found that the first response time was 303 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

zeiss.ca performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value2,750 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

zeiss.ca

303 ms

www.zeiss.ca

540 ms

home.html

116 ms

zeiss-corporate.css

255 ms

zeiss-corporate.css2.css

290 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 74% of them (14 requests) were addressed to the original Zeiss.ca, 21% (4 requests) were made to Google-analytics.com and 5% (1 request) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (801 ms) belongs to the original domain Zeiss.ca.

Page Optimization Overview & Recommendations

Page size can be reduced by 646.8 kB (69%)

Content Size

942.8 kB

After Optimization

296.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zeiss.ca main page is 942.8 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. 20% of websites need less resources to load. Javascripts take 674.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 11.6 kB

  • Original 15.5 kB
  • After minification 14.6 kB
  • After compression 3.9 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 11.6 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 2.8 kB

  • Original 52.4 kB
  • After minification 49.6 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. Zeiss images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 467.8 kB

  • Original 674.9 kB
  • After minification 674.9 kB
  • After compression 207.0 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 467.8 kB or 69% of the original size.

CSS Optimization

-82%

Potential reduce by 164.6 kB

  • Original 200.1 kB
  • After minification 197.9 kB
  • After compression 35.5 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. Zeiss.ca needs all CSS files to be minified and compressed as it can save up to 164.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (21%)

Requests Now

14

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zeiss.ca

zeiss.ca

303 ms

www.zeiss.ca

www.zeiss.ca

540 ms

home.html

home.html

116 ms

zeiss-corporate.css

zeiss-corporate.css

255 ms

zeiss-corporate.css2.css

zeiss-corporate.css2.css

290 ms

zeiss-corporate.domino.css

zeiss-corporate.domino.css

295 ms

zeiss-corporate.js

zeiss-corporate.js

801 ms

zeiss-corporate.js2.js

zeiss-corporate.js2.js

399 ms

satelliteLib-6c587e49b31d4f59883905c2bab3b0ee1a03ebb2.js

satelliteLib-6c587e49b31d4f59883905c2bab3b0ee1a03ebb2.js

39 ms

analytics.js

analytics.js

13 ms

zeiss.logo.png

zeiss.logo.png

109 ms

welcome-to-zeiss.jpg

welcome-to-zeiss.jpg

336 ms

calltoact.png

calltoact.png

105 ms

link_black.gif

link_black.gif

100 ms

0bff5a93-ce9b-4468-9a94-431fb03301d0.woff

0bff5a93-ce9b-4468-9a94-431fb03301d0.woff

243 ms

collect

collect

21 ms

collect

collect

17 ms

collect

collect

18 ms

5beb2de5-f02e-4d93-95f9-8dae06b289d8.woff

5beb2de5-f02e-4d93-95f9-8dae06b289d8.woff

370 ms

Accessibility Review

zeiss.ca accessibility score

98

Accessibility Issues

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.

Best Practices

zeiss.ca best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

zeiss.ca SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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 Zeiss.ca 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 Zeiss.ca 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

zeiss.ca

Open Graph description is not detected on the main page of 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: