Access d-d-s.nl. One moment, please...

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value390 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.51

15/100

15%

TTI (Time to Interactive)

Value7.4 s

49/100

10%

d-d-s.nl

489 ms

ga.js

27 ms

jquery-1.8.2.js

51 ms

background.jpg

313 ms

kop-logo.png

312 ms

Our browser made a total of 108 requests to load all elements on the main page. We found that 94% of them (102 requests) were addressed to the original D-d-s.nl, 4% (4 requests) were made to Google-analytics.com and 1% (1 request) were made to Code.jquery.com. The less responsive or slowest element that took the longest time to load (718 ms) belongs to the original domain D-d-s.nl.

Content Size

770.6 kB

After Optimization

638.4 kB

In fact, the total size of D-d-s.nl main page is 770.6 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. 55% of websites need less resources to load. Images take 570.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 126.2 kB

Original 161.8 kB
After minification 141.3 kB
After compression 35.6 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. This page needs HTML code to be minified as it can gain 20.4 kB, which is 13% 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 126.2 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 6.0 kB

Original 570.7 kB
After minification 564.7 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. D S images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 84 B

Original 38.2 kB
After minification 38.2 kB
After compression 38.1 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. This website has mostly compressed JavaScripts.

Requests Now

107

After Optimization

104

The browser has sent 107 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D S. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 D-d-s.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 D-d-s.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

d-d-s.nl

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

Report Summary

Performance

Accessibility

Best Practices

SEO

One moment, please...

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

d-d-s.nl

ga.js

jquery-1.8.2.js

background.jpg

kop-logo.png

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

d-d-s.nl

ga.js

jquery-1.8.2.js

background.jpg

kop-logo.png

dds-small-pop.png

dds-logo.png

uk-flag.gif

noodverlichting-m7-33-20-small.jpg

9000-logo.png

82-733500-klein.jpg

arf18-remote-control-1.gif

diamondantenne-logo.jpg

logo-antenne-beam-small.jpg

john-deere.jpg

cn-801s-klein.jpg

logo-motorola-klein.gif

logo-e-tech.gif

ep100-micro.jpg

pmr-klein.jpg

zij-front-aanzicht-im400-klein.jpg

basestation1-klein.jpg

logo-kenwood.gif

bantrans.gif

DDE2240-klein.jpg

hikvision-ip-cam.jpg

sanyo-overzicht.jpg

accu-pack-fcel-min.jpg

ups-battery-guard-plc-small.jpg

alf2412_p.jpg

ppss1503-klein.jpg

__utm.gif

80-ppss1255-zeerklein.gif

99061-klein.jpg

conv-10a-foto.jpg

gsm-signaal-tester-klein.jpg

gsm-r-netwerk-tester-klein.jpg

multiopener-pcb-klein.jpg

bgs2t-rs232-klein.jpg

analytics.js

wavecom-klein.jpg

collect

js

fxt009-fastrack-xtend-edge.jpg