Zeiss.fr Site Title

ZEISS en France

Zeiss.fr Meta Description

ZEISS est une entreprise technologique de premier plan à l'échelle internationale opérant dans les domaines de l’optique et de l'optoélectronique. 

Zeiss.fr Test Results

zeiss.fr Mobile Usability: 100/100


zeiss.fr Mobile Speed: 53/100

Quick overview:
Avoid landing page redirects
Your page has 4 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://zeiss.fr/
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
https://www.zeiss.fr/docroot/zeiss-common/js/tracking.js
...
Optimize CSS Delivery of the following:
https://www.zeiss.fr/docroot/zeiss-common/css/common.css
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 68.1KiB (61% reduction).
Compressing https://www.zeiss.fr/corporate/home/j/s/stage/slide/stageimage/image.mobile.980.jpg/1492779566298.jpg/moment-of-new-perspectives.jpg could save 68.1KiB (61% reduction).
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://assets.adobedtm.com/4e04df42037e10d12b0e8b150cbfb194e5d04b9c/satelliteLib-6c587e49b31d4f59883905c2bab3b0ee1a03ebb2.js (expiration not specified)
...
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 814B (13% reduction).
Minifying https://www.zeiss.fr/corporate/home.html could save 814B (13% reduction) after compression.

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