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essilor.co.nz screenshot

Report Summary

  • 67

    Performance

    Renders faster than
    79% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 0

    SEO

essilor.co.nz

World leader in prescription lenses | Essilor NZ

Page Load Speed

1.3 sec in total

First Response

491 ms

Resources Loaded

760 ms

Page Rendered

0 ms

essilor.co.nz screenshot

About Website

Welcome to essilor.co.nz homepage info - get ready to check Essilor best content right away, or after learning these important things about essilor.co.nz

Everyone everywhere should experience the life changing benefits of vision correction and vision protection. Choose your lenses from a committed brand.

Visit essilor.co.nz

Key Findings

We analyzed Essilor.co.nz page load time and found that the first response time was 491 ms and then it took 760 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

essilor.co.nz performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value820 ms

35/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.5 s

14/100

10%

Network Requests Diagram

491 ms

5fc929f91a8e14d9.css

67 ms

polyfills-c67a75d1b6f99dc8.js

7 ms

webpack-595192438042f8be.js

7 ms

framework-ac4fdf4e9931ed5a.js

31 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that all of those requests were addressed to Essilor.co.nz and no external sources were called. The less responsive or slowest element that took the longest time to load (491 ms) relates to the external source Essilor.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 600.2 kB (36%)

Content Size

1.7 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Essilor.co.nz main page is 1.7 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. Images take 958.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 89.1 kB

  • Original 102.5 kB
  • After minification 102.5 kB
  • After compression 13.4 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. 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 89.1 kB or 87% of the original size.

Image Optimization

-4%

Potential reduce by 35.9 kB

  • Original 958.4 kB
  • After minification 922.4 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. Essilor images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 244.9 kB

  • Original 350.3 kB
  • After minification 350.2 kB
  • After compression 105.4 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 244.9 kB or 70% of the original size.

CSS Optimization

-86%

Potential reduce by 230.3 kB

  • Original 268.6 kB
  • After minification 268.4 kB
  • After compression 38.3 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. Essilor.co.nz needs all CSS files to be minified and compressed as it can save up to 230.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (83%)

Requests Now

12

After Optimization

2

  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Essilor. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

491 ms

5fc929f91a8e14d9.css

5fc929f91a8e14d9.css

67 ms

polyfills-c67a75d1b6f99dc8.js

polyfills-c67a75d1b6f99dc8.js

7 ms

webpack-595192438042f8be.js

webpack-595192438042f8be.js

7 ms

framework-ac4fdf4e9931ed5a.js

framework-ac4fdf4e9931ed5a.js

31 ms

main-6d4a6e4ab7b05c2c.js

main-6d4a6e4ab7b05c2c.js

24 ms

_app-a499530e40918ba4.js

_app-a499530e40918ba4.js

23 ms

next-09e8cbe6b76c4cd9.js

next-09e8cbe6b76c4cd9.js

25 ms

1217-ce2205c931d2ac64.js

1217-ce2205c931d2ac64.js

24 ms

%5B%5B...slug%5D%5D-c97bdeb8ebb35e74.js

%5B%5B...slug%5D%5D-c97bdeb8ebb35e74.js

25 ms

_buildManifest.js

_buildManifest.js

25 ms

_ssgManifest.js

_ssgManifest.js

26 ms

_error-3f70f2d61eb8c6dd.js

_error-3f70f2d61eb8c6dd.js

17 ms

Accessibility Review

essilor.co.nz accessibility score

95

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a valid value for its [lang] attribute.

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

essilor.co.nz 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

SEO Factors

essilor.co.nz SEO score

0

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 Essilor.co.nz 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 Essilor.co.nz 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

essilor.co.nz

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