5.7 sec in total
364 ms
3.8 sec
1.6 sec
Click here to check amazing Silverfish content. Otherwise, check out these important facts you probably never knew about silverfish.nl
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Visit silverfish.nlWe analyzed Silverfish.nl page load time and found that the first response time was 364 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
silverfish.nl performance score
name
value
score
weighting
Value6.2 s
3/100
10%
Value6.2 s
11/100
25%
Value12.1 s
3/100
10%
Value7,090 ms
0/100
30%
Value0.009
100/100
15%
Value16.9 s
5/100
10%
364 ms
1505 ms
119 ms
84 ms
189 ms
Our browser made a total of 83 requests to load all elements on the main page. We found that 90% of them (75 requests) were addressed to the original Silverfish.nl, 4% (3 requests) were made to Cdnjs.cloudflare.com and 2% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Silverfish.nl.
Page size can be reduced by 78.2 kB (2%)
4.3 MB
4.3 MB
In fact, the total size of Silverfish.nl main page is 4.3 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. 65% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.
Potential reduce by 40.8 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 40.8 kB or 78% of the original size.
Potential reduce by 14.8 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. Silverfish images are well optimized though.
Potential reduce by 14.7 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 14.7 kB or 11% of the original size.
Potential reduce by 7.9 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. Silverfish.nl needs all CSS files to be minified and compressed as it can save up to 7.9 kB or 20% of the original size.
Number of requests can be reduced by 37 (49%)
76
39
The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Silverfish. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
silverfish.nl
364 ms
silverfish.nl
1505 ms
slick.css
119 ms
all.min.css
84 ms
stylesheet.css
189 ms
bubbles.css
273 ms
jquery.min.js
82 ms
slick.min.js
346 ms
popup.js
350 ms
js.js
353 ms
aos.js
352 ms
masonry.pkgd.min.js
121 ms
sbi-styles.min.css
417 ms
style.min.css
429 ms
search-filter.min.css
435 ms
style.css
443 ms
style.css
440 ms
front.min.css
443 ms
jquery.min.js
466 ms
jquery-migrate.min.js
446 ms
search-filter-build.min.js
451 ms
chosen.jquery.min.js
484 ms
front.min.js
483 ms
jquery.cookie.min.js
77 ms
core.min.js
482 ms
datepicker.min.js
622 ms
navigation.js
622 ms
masonry.pkgd.min.js
26 ms
wp-emoji-release.min.js
216 ms
gtm.js
175 ms
offerte.svg
127 ms
offerte-hover.svg
129 ms
tel.svg
130 ms
tel-hover.svg
251 ms
mail.svg
245 ms
mail-hover.svg
264 ms
logo-wit-1.svg
266 ms
menu.svg
261 ms
menu-blue.svg
243 ms
menu-blue-active.svg
331 ms
sf-bg-1.jpg
736 ms
grafische-vormgeving.svg
351 ms
website-laten-maken-1.svg
352 ms
webshop-ontwikkeling.svg
344 ms
vindbaarheid-1.svg
354 ms
ads.svg
385 ms
duikbril.svg
400 ms
bubbles-water.png
644 ms
dust.jpg
644 ms
amvm-2jpg.jpg
865 ms
logo_1-2.svg
642 ms
AdobeStock_494742640-scaled-e1660306029640.jpeg
864 ms
logo-49.svg
644 ms
binnen-zonwering.jpg
863 ms
logo-48.svg
648 ms
Schermafbeelding-2022-08-18-om-11.55.28.png
677 ms
logo-46.svg
677 ms
20-amsterdamzon-1.jpg
1134 ms
logo-47.svg
769 ms
MBF0240-HDR.jpg
1132 ms
logo-44.svg
859 ms
Krachtsalarisadministratie-157-scaled-e1653898773257.jpg
1038 ms
logo-45.svg
834 ms
RobotoCondensed-Regular.woff
831 ms
RobotoCondensed-Light.woff
857 ms
RobotoCondensed-Bold.woff
920 ms
kv-wit.svg
926 ms
wekkebbm-wit.svg
934 ms
internationalschool-wit.svg
971 ms
fa-brands-400.woff
77 ms
jvisser-wit.svg
899 ms
seydlitz.svg
887 ms
kiyoh-wit.svg
888 ms
logo-qlimaat.svg
966 ms
groenepluim-wit.svg
950 ms
Partner-RGB-300x286.png
901 ms
leerbedrijf.svg
889 ms
stichting-wildlife.svg
885 ms
betrokken-ondernemers.svg
886 ms
beeldmerk-wit.svg
958 ms
js
45 ms
AdobeStock_149935225-e1569405808528.jpeg
950 ms
bubbles.js
99 ms
silverfish.nl accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
Links do not have a discernible name
silverfish.nl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
silverfish.nl SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
NL
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Silverfish.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 Silverfish.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.
silverfish.nl
Open Graph data is detected on the main page of Silverfish. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: