Tools & Wizards About Us
startcenter.nl screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 87

    SEO

    Google-friendlier than
    66% of websites

startcenter.nl

Startcenter.nl | De fraaiste startpagina van NL

Page Load Speed

8.9 sec in total

First Response

1.1 sec

Resources Loaded

7.4 sec

Page Rendered

398 ms

startcenter.nl screenshot

About Website

Click here to check amazing Startcenter content. Otherwise, check out these important facts you probably never knew about startcenter.nl

Starcenter.nl is het centrum van het internet. Hier vind je in een handig overzicht links naar de beste sites.

Visit startcenter.nl

Key Findings

We analyzed Startcenter.nl page load time and found that the first response time was 1.1 sec and then it took 7.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

startcenter.nl performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

83/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

Network Requests Diagram

startcenter.nl

1128 ms

highslide.css

390 ms

main.css.php

397 ms

layout8.css.php

396 ms

swfobject.js

388 ms

Our browser made a total of 173 requests to load all elements on the main page. We found that 90% of them (155 requests) were addressed to the original Startcenter.nl, 1% (2 requests) were made to S7.addthis.com and 1% (2 requests) were made to Hypotheekrentecentrum.nl. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source Leningafsluiten.biz.

Page Optimization Overview & Recommendations

Page size can be reduced by 583.8 kB (56%)

Content Size

1.0 MB

After Optimization

451.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Startcenter.nl 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. 30% of websites need less resources to load. Javascripts take 504.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 210.1 kB

  • Original 250.4 kB
  • After minification 241.7 kB
  • After compression 40.3 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 210.1 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 7.8 kB

  • Original 250.0 kB
  • After minification 242.2 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. Startcenter images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 340.8 kB

  • Original 504.9 kB
  • After minification 485.6 kB
  • After compression 164.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 340.8 kB or 67% of the original size.

CSS Optimization

-84%

Potential reduce by 25.2 kB

  • Original 29.9 kB
  • After minification 22.8 kB
  • After compression 4.7 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. Startcenter.nl needs all CSS files to be minified and compressed as it can save up to 25.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 145 (85%)

Requests Now

171

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 171 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Startcenter. 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 as a result speed up the page load time.

Network Requests Diagram

startcenter.nl

startcenter.nl

1128 ms

highslide.css

highslide.css

390 ms

main.css.php

main.css.php

397 ms

layout8.css.php

layout8.css.php

396 ms

swfobject.js

swfobject.js

388 ms

blink.js

blink.js

395 ms

jquery.js

jquery.js

481 ms

highslide-full.js

highslide-full.js

727 ms

addthis_widget.js

addthis_widget.js

11 ms

brand

brand

23 ms

brand

brand

23 ms

234x60.gif

234x60.gif

1123 ms

234x60.gif

234x60.gif

1785 ms

160x600.jpg

160x600.jpg

1405 ms

120x600.gif

120x600.gif

1288 ms

120x60.gif

120x60.gif

2422 ms

120x80.gif

120x80.gif

594 ms

120x80.gif

120x80.gif

941 ms

120x60.gif

120x60.gif

1346 ms

img_body.jpg

img_body.jpg

100 ms

bg_clock.png

bg_clock.png

202 ms

img_main.jpg

img_main.jpg

457 ms

logo.gif

logo.gif

200 ms

arrow1w.gif

arrow1w.gif

203 ms

addthis.gif

addthis.gif

200 ms

nl.gif

nl.gif

299 ms

be.gif

be.gif

379 ms

en.gif

en.gif

379 ms

homeb.gif

homeb.gif

407 ms

registerb.gif

registerb.gif

407 ms

loginb.gif

loginb.gif

478 ms

contactb.gif

contactb.gif

568 ms

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www.ad.nl.png

562 ms

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590 ms

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591 ms

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arrow3b.gif

641 ms

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659 ms

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796 ms

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1263 ms

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1301 ms

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1296 ms

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98 ms

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300lo.json

36 ms

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38 ms

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1201 ms

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1265 ms

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1285 ms

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1285 ms

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1283 ms

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1266 ms

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1260 ms

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1250 ms

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1248 ms

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1229 ms

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1249 ms

www.leningafsluiten.biz.png

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1247 ms

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1260 ms

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1237 ms

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1235 ms

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1239 ms

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1297 ms

route.tomtom.com.png

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1287 ms

www.verkeersinformatiedienst.nl.png

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1231 ms

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1227 ms

www.studenten.net.png

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1245 ms

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1238 ms

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513 ms

thermo.gif

thermo.gif

510 ms

radar_nl_teaser.gif

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343 ms

www.leerlingen.com.png

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1215 ms

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1217 ms

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1231 ms

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1227 ms

www.apple.com.png

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1246 ms

www.mp3.com.png

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1255 ms

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1234 ms

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1228 ms

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1121 ms

www.candidcamera.be.png

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1164 ms

www.lach.nu.png

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1210 ms

www.iphoned.nl.png

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1210 ms

www.rtl.nl.png

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1163 ms

www.tvgids.nl.png

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1168 ms

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1181 ms

www.jijislief.nl.png

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1264 ms

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1269 ms

www.ifoods.nl.png

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1328 ms

www.smulweb.nl.png

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1257 ms

www.gezondheidsnet.nl.png

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1293 ms

www.consumed.nl.png

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1270 ms

www.nationalevacaturebank.nl.png

www.nationalevacaturebank.nl.png

1311 ms

www.monsterboard.nl.png

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1330 ms

www.beursplaza.com.png

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1359 ms

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1315 ms

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1324 ms

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1276 ms

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1316 ms

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1323 ms

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1337 ms

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1266 ms

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1276 ms

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1277 ms

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1319 ms

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1272 ms

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1282 ms

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1268 ms

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1277 ms

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1278 ms

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1316 ms

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1272 ms

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1264 ms

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1260 ms

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1273 ms

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1271 ms

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1235 ms

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1254 ms

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1255 ms

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1233 ms

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1170 ms

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1174 ms

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1158 ms

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1139 ms

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1136 ms

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1142 ms

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1124 ms

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1114 ms

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1102 ms

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1102 ms

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1106 ms

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1126 ms

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1100 ms

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1103 ms

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1104 ms

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1103 ms

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1103 ms

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1125 ms

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1116 ms

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1102 ms

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1109 ms

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1102 ms

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1124 ms

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529 ms

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119 ms

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loader.white.gif

173 ms

Accessibility Review

startcenter.nl accessibility score

68

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

startcenter.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

startcenter.nl SEO score

87

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Startcenter.nl 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 Startcenter.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

startcenter.nl

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