3 sec in total
391 ms
2.5 sec
99 ms
Visit zeiss.co.jp now to see the best up-to-date Zeiss content for Japan and also check out these interesting facts you probably never knew about zeiss.co.jp
ZEISSは光学およびオプトエレクトロニクス分野で世界的にリードする先端企業です。
Visit zeiss.co.jpWe analyzed Zeiss.co.jp page load time and found that the first response time was 391 ms and then it took 2.6 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.
zeiss.co.jp performance score
name
value
score
weighting
Value2.2 s
78/100
10%
Value3.4 s
68/100
25%
Value7.1 s
30/100
10%
Value1,260 ms
19/100
30%
Value0.107
88/100
15%
Value9.4 s
31/100
10%
391 ms
666 ms
202 ms
297 ms
291 ms
Our browser made a total of 28 requests to load all elements on the main page. We found that 86% of them (24 requests) were addressed to the original Zeiss.co.jp, 11% (3 requests) were made to Google-analytics.com and 4% (1 request) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (822 ms) belongs to the original domain Zeiss.co.jp.
Page size can be reduced by 672.8 kB (66%)
1.0 MB
347.6 kB
In fact, the total size of Zeiss.co.jp main page is 1.0 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. 25% of websites need less resources to load. Javascripts take 674.9 kB which makes up the majority of the site volume.
Potential reduce by 30.1 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 5.0 kB, which is 13% 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 30.1 kB or 80% of the original size.
Potential reduce by 12.3 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. Obviously, Zeiss needs image optimization as it can save up to 12.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 467.8 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 467.8 kB or 69% of the original size.
Potential reduce by 162.5 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.co.jp needs all CSS files to be minified and compressed as it can save up to 162.5 kB or 82% of the original size.
Number of requests can be reduced by 9 (38%)
24
15
The browser has sent 24 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.
zeiss.co.jp
391 ms
www.zeiss.co.jp
666 ms
home.html
202 ms
zeiss-corporate.css
297 ms
zeiss-corporate.css2.css
291 ms
zeiss-corporate.domino.css
309 ms
zeiss-corporate.js
822 ms
zeiss-corporate.js2.js
395 ms
satelliteLib-6c587e49b31d4f59883905c2bab3b0ee1a03ebb2.js
24 ms
analytics.js
20 ms
zeiss.logo.png
112 ms
language-switch-sprite.png
112 ms
icon.lupe.png
108 ms
moment_success.jpg
204 ms
moment_success.jpg
112 ms
ZEISS_Touit.jpg
298 ms
ZEISS_Touit.jpg
299 ms
icon.facebook.png
208 ms
icon.twitter.png
206 ms
icon.gplus.png
208 ms
0bff5a93-ce9b-4468-9a94-431fb03301d0.woff
399 ms
linklist_internal_link.gif
295 ms
nav.footer.png
296 ms
collect
28 ms
collect
27 ms
link_black.gif
276 ms
stage.level.indicator.png
343 ms
back-to-top.png
342 ms
zeiss.co.jp 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 input fields do not have accessible names
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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
zeiss.co.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
zeiss.co.jp SEO score
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
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zeiss.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Zeiss.co.jp 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.
zeiss.co.jp
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: