Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

acuvue.cz

Pohodlné kontaktní čočky pro jasný zrak | ACUVUE® CZ

Page Load Speed

2.1 sec in total

First Response

160 ms

Resources Loaded

1.5 sec

Page Rendered

419 ms

acuvue.cz screenshot

About Website

Welcome to acuvue.cz homepage info - get ready to check ACUVUE best content right away, or after learning these important things about acuvue.cz

Kontaktní čočky Acuvue® odpovídají na jedinečné potřeby téměř každého nositele a nabízí široký výběr. Zjistěte, proč používat čočky Acuvue®.

Visit acuvue.cz

Key Findings

We analyzed Acuvue.cz page load time and found that the first response time was 160 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

acuvue.cz performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value14.1 s

0/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value2,500 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value23.5 s

1/100

10%

Network Requests Diagram

acuvue.cz

160 ms

www.acuvue.cz

476 ms

otSDKStub.js

26 ms

tappable.js

57 ms

css__mjQ6PfgAlSEaKr8odDd2987_jS86e1gnUOK0IKBwDQQ__IO0fVPWPGK7W3XWr99RMeSaslli1ohcKGobP_M5ZaJQ__lSCJOaPnLs0Mad-tsrdPlvruK1QE9aBmRyLHWSKlzyE.css

63 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 84% of them (36 requests) were addressed to the original Acuvue.cz, 7% (3 requests) were made to Cdn.cookielaw.org and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (497 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 548.1 kB (12%)

Content Size

4.6 MB

After Optimization

4.0 MB

In fact, the total size of Acuvue.cz main page is 4.6 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. Only a small number of websites need less resources to load. Images take 3.5 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 110.5 kB

  • Original 136.1 kB
  • After minification 136.1 kB
  • After compression 25.6 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 110.5 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 3.5 MB
  • After minification 3.5 MB

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. ACUVUE images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 437.6 kB

  • Original 729.0 kB
  • After minification 729.0 kB
  • After compression 291.4 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 437.6 kB or 60% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 184.2 kB
  • After minification 184.2 kB
  • After compression 184.2 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. Acuvue.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 12 (35%)

Requests Now

34

After Optimization

22

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ACUVUE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

acuvue.cz accessibility score

84

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

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

acuvue.cz 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

acuvue.cz SEO score

83

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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Acuvue.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Acuvue.cz 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 ACUVUE. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: