Tools & Wizards About Us

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

lensbase.be

Contactlenzen online | Lenzen bestellen | Vision Direct België

Page Load Speed

2.8 sec in total

First Response

312 ms

Resources Loaded

2.2 sec

Page Rendered

304 ms

About Website

Welcome to lensbase.be homepage info - get ready to check Lensbase best content right away, or after learning these important things about lensbase.be

Bestel contactlenzen en lenzenvloeistof voordelig online bij Vision Direct. Lenzen tot wel 45% goedkoper dan bij de opticien. Supersnelle bezorging, ook op zaterdag.

Visit lensbase.be

Key Findings

We analyzed Lensbase.be page load time and found that the first response time was 312 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

lensbase.be performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value6.1 s

44/100

10%

TBT (Total Blocking Time)

Value2,220 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value14.1 s

9/100

10%

Network Requests Diagram

312 ms

c879eb5a2b1ce9efa314cb5c319fd9ad.css

266 ms

f516dc1a38e4dd6b2670012b941ebdbe.js

551 ms

fonts.css

187 ms

69e4975a6bff9992450a736aba407cc3.js

350 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Lensbase.be, 19% (10 requests) were made to and 9% (5 requests) were made to Visiondirect.be. The less responsive or slowest element that took the longest time to load (722 ms) relates to the external source Visiondirect.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 426.8 kB (41%)

Content Size

1.0 MB

After Optimization

615.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lensbase.be 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. 45% of websites need less resources to load. Images take 443.6 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 93.5 kB

  • Original 111.7 kB
  • After minification 79.5 kB
  • After compression 18.2 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 32.2 kB, which is 29% 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 93.5 kB or 84% of the original size.

Image Optimization

-17%

Potential reduce by 74.7 kB

  • Original 443.6 kB
  • After minification 368.9 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, Lensbase needs image optimization as it can save up to 74.7 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-53%

Potential reduce by 60.9 kB

  • Original 115.9 kB
  • After minification 115.9 kB
  • After compression 55.0 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 60.9 kB or 53% of the original size.

CSS Optimization

-53%

Potential reduce by 197.7 kB

  • Original 371.3 kB
  • After minification 370.4 kB
  • After compression 173.6 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. Lensbase.be needs all CSS files to be minified and compressed as it can save up to 197.7 kB or 53% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (43%)

Requests Now

40

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lensbase. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

lensbase.be accessibility score

83

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

lensbase.be best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

lensbase.be SEO score

91

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lensbase.be can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Lensbase.be 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 description is not detected on the main page of Lensbase. 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: