Tools & Wizards About Us
silverline.nl screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% 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

  • 92

    SEO

    Google-friendlier than
    74% of websites

silverline.nl

Verkoop en onderhoud van Motoren | SilverLine Automotive | IJsselstein

Page Load Speed

9.8 sec in total

First Response

258 ms

Resources Loaded

9.2 sec

Page Rendered

282 ms

silverline.nl screenshot

About Website

Welcome to silverline.nl homepage info - get ready to check Silver Line best content for Netherlands right away, or after learning these important things about silverline.nl

SilverLine Automotive inkoop en verkoop van motoren, motortransport, motorstalling, motoronderhoud en reparatie.

Visit silverline.nl

Key Findings

We analyzed Silverline.nl page load time and found that the first response time was 258 ms and then it took 9.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

silverline.nl performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value21.8 s

0/100

10%

TBT (Total Blocking Time)

Value2,360 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

Network Requests Diagram

silverline.nl

258 ms

silverline.nl

1223 ms

rollbar.min.js

24 ms

47029f62ba332153401e64b477203296.css

514 ms

988629f2c04fc3f2aef7905315cb5cab.js

1008 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 90% of them (38 requests) were addressed to the original Silverline.nl, 5% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to D37gvrvc0wt4s1.cloudfront.net. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Silverline.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 MB (50%)

Content Size

4.4 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Silverline.nl main page is 4.4 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. 35% of websites need less resources to load. Javascripts take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 48.9 kB

  • Original 59.7 kB
  • After minification 55.9 kB
  • After compression 10.8 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 48.9 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 22.3 kB

  • Original 1.1 MB
  • After minification 1.0 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. Silver Line images are well optimized though.

JavaScript Optimization

-76%

Potential reduce by 2.2 MB

  • Original 2.8 MB
  • After minification 2.7 MB
  • After compression 683.6 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 2.2 MB or 76% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 472.4 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.

Requests Breakdown

Number of requests can be reduced by 4 (10%)

Requests Now

39

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Silver Line. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

silverline.nl

silverline.nl

258 ms

silverline.nl

silverline.nl

1223 ms

rollbar.min.js

rollbar.min.js

24 ms

47029f62ba332153401e64b477203296.css

47029f62ba332153401e64b477203296.css

514 ms

988629f2c04fc3f2aef7905315cb5cab.js

988629f2c04fc3f2aef7905315cb5cab.js

1008 ms

xajax_core.js

xajax_core.js

276 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

272 ms

analytics.js

analytics.js

57 ms

silverline-logo.png

silverline-logo.png

277 ms

silverline-brand.png

silverline-brand.png

252 ms

motor_1920x575.jpg

motor_1920x575.jpg

511 ms

fill_slide_1920x575.png

fill_slide_1920x575.png

261 ms

fill_slide_991x372.png

fill_slide_991x372.png

281 ms

bruidsauto_1920x575.jpg

bruidsauto_1920x575.jpg

599 ms

cabrio_1920x575.jpg

cabrio_1920x575.jpg

821 ms

limousine_1920x575.jpg

limousine_1920x575.jpg

757 ms

DUP_homebanner.jpg

DUP_homebanner.jpg

782 ms

DUCT_banner.png

DUCT_banner.png

971 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

870 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

1694 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1273 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

2969 ms

loading.png

loading.png

1085 ms

limo_banner.jpg

limo_banner.jpg

1230 ms

tomtom_banner.jpg

tomtom_banner.jpg

1300 ms

collectie2016_banner.png

collectie2016_banner.png

1439 ms

MvdM_banner.jpg

MvdM_banner.jpg

1550 ms

front.php

front.php

3048 ms

front.php

front.php

3648 ms

front.php

front.php

2057 ms

front.php

front.php

3476 ms

pin.png

pin.png

1935 ms

american-express.png

american-express.png

2175 ms

mastercard.png

mastercard.png

2326 ms

visa.png

visa.png

2445 ms

rdw-erkend.png

rdw-erkend.png

2577 ms

collect

collect

11 ms

collect

collect

52 ms

glyphicons-halflings-regular.ttf

glyphicons-halflings-regular.ttf

3188 ms

fontawesome-webfont.ttf

fontawesome-webfont.ttf

1125 ms

fontawesome-webfont.svg

fontawesome-webfont.svg

1584 ms

glyphicons-halflings-regular.svg

glyphicons-halflings-regular.svg

1593 ms

Accessibility Review

silverline.nl accessibility score

95

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

silverline.nl 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

High

Page has valid source maps

SEO Factors

silverline.nl SEO score

92

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Silverline.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Silverline.nl 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

silverline.nl

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