Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

jackdesign.nl

Jackdesign | Computers & Websites in Noord-Holland

Page Load Speed

2 sec in total

First Response

351 ms

Resources Loaded

1.5 sec

Page Rendered

156 ms

jackdesign.nl screenshot

About Website

Welcome to jackdesign.nl homepage info - get ready to check Jackdesign best content right away, or after learning these important things about jackdesign.nl

Professionele website nodig? Computerproblemen? Jackdesign.nl

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Key Findings

We analyzed Jackdesign.nl page load time and found that the first response time was 351 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

jackdesign.nl performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

22/100

25%

SI (Speed Index)

Value4.7 s

69/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value5.4 s

72/100

10%

Network Requests Diagram

jackdesign.nl

351 ms

www.jackdesign.nl

294 ms

jquery.js

8 ms

jquery.easing.1.3.js

120 ms

jquery.bxSlider.min.js

171 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 88% of them (30 requests) were addressed to the original Jackdesign.nl, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (577 ms) belongs to the original domain Jackdesign.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.8 kB (9%)

Content Size

587.9 kB

After Optimization

536.1 kB

In fact, the total size of Jackdesign.nl main page is 587.9 kB. 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 506.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 12.1 kB

  • Original 14.9 kB
  • After minification 14.1 kB
  • After compression 2.9 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 12.1 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 487 B

  • Original 506.6 kB
  • After minification 506.2 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. Jackdesign images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 29.7 kB

  • Original 54.5 kB
  • After minification 43.9 kB
  • After compression 24.7 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 29.7 kB or 55% of the original size.

CSS Optimization

-80%

Potential reduce by 9.5 kB

  • Original 11.9 kB
  • After minification 8.2 kB
  • After compression 2.4 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. Jackdesign.nl needs all CSS files to be minified and compressed as it can save up to 9.5 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (16%)

Requests Now

32

After Optimization

27

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jackdesign. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

jackdesign.nl accessibility score

94

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.

Best Practices

jackdesign.nl 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

jackdesign.nl SEO score

67

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jackdesign.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Jackdesign.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Jackdesign. 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: