naturalis.nl Website Information
Daily Unique Visits: 52,528
Daily Page Views: 315,168
Income Per Day: $630
Estimated Value: $453,600
This website is located in Netherlands and is using following IP address 87.233.240.7. See the complete list of popular websites hosted in Netherlands.
naturalis.nl is registered under .NL top-level domain. Please check other sites in .NL zone.
Website naturalis.nl is using the following name servers:
- ns2.transip.eu
- ns1.transip.nl
- ns0.transip.net
and is probably hosted by True B.V.. See the full list of other websites hosted by True B.V..
The highest website naturalis.nl position in Alexa rank database was 26218 and the lowest rank position was 996650. Current position of naturalis.nl in Alexa rank database is 27304.
Desktop speed score of naturalis.nl (45/100) is better than the results of 19.01% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of naturalis.nl (64/100) is better than the results of 11.2% of other sites and means that the page is not mobile-friendly.
Mobile speed score of naturalis.nl (38/100) is better than the results of 16.76% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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naturalis.nl Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
naturalis.nl whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Domain name: naturalis.nl
Status: active
Registrar:
Gandi
boulevard Massena 63-65
75013 Paris
France
Abuse Contact:
DNSSEC: yes
Domain nameservers:
ns-1282.awsdns-32.org
ns-959.awsdns-55.net
ns-117.awsdns-14.com
ns-1805.awsdns-33.co.uk
Creation Date: 1997-05-28
Updated Date: 2021-03-17
Record maintained by: SIDN BV
Status: active
Registrar:
Gandi
boulevard Massena 63-65
75013 Paris
France
Abuse Contact:
DNSSEC: yes
Domain nameservers:
ns-1282.awsdns-32.org
ns-959.awsdns-55.net
ns-117.awsdns-14.com
ns-1805.awsdns-33.co.uk
Creation Date: 1997-05-28
Updated Date: 2021-03-17
Record maintained by: SIDN BV
naturalis.nl server information
Servers Location
naturalis.nl desktop page speed rank
Last tested: 2019-01-26
Desktop Speed
Bad
45/100
naturalis.nl Desktop Speed Test Quick Summary
priority - 57Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 554.8KiB (77% reduction).
Compressing http://www.naturalis.nl/static/behaviour/moment.js could save 272.8KiB (80% reduction).
Compressing http://www.naturalis.nl/static/presentation/main.css could save 68.6KiB (76% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 46.2KiB (72% reduction).
Compressing http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 38.6KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 27.7KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 24.3KiB (83% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 21.4KiB (74% reduction).
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Compressing http://www.naturalis.nl/static/behaviour/engine.js could save 10.2KiB (70% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 7.1KiB (79% reduction).
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Compressing http://www.naturalis.nl/static/presentation/main.css could save 68.6KiB (76% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 46.2KiB (72% reduction).
Compressing http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 38.6KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 27.7KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 24.3KiB (83% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 21.4KiB (74% reduction).
Compressing http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css could save 18.9KiB (82% reduction).
Compressing http://www.naturalis.nl/static/presentation/druktemeter.css could save 10.6KiB (82% reduction).
Compressing http://www.naturalis.nl/static/behaviour/engine.js could save 10.2KiB (70% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 7.1KiB (79% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 6KiB (75% reduction).
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Compressing http://www.naturalis.nl/media/widget.xml could save 796B (50% reduction).
priority - 32Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
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http://mtrack.nl/js/v2.js?c=naturali&s=wwwnatu1494&v=2.1 (4 hours)
priority - 21Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 201KiB (31% reduction).
Minifying http://www.naturalis.nl/static/behaviour/moment.js could save 140.8KiB (42% reduction).
Minifying http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 15.2KiB (30% reduction).
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Minifying http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 12.8KiB (35% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 7.9KiB (28% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 4.4KiB (55% reduction).
Minifying http://www.naturalis.nl/static/behaviour/engine.js could save 4.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 1.4KiB (3% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…83ad41/default+en.I.js could save 746B (1% reduction) after compression.
Minifying http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 15.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 13.7KiB (47% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 12.8KiB (35% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 7.9KiB (28% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 4.4KiB (55% reduction).
Minifying http://www.naturalis.nl/static/behaviour/engine.js could save 4.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 1.4KiB (3% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…83ad41/default+en.I.js could save 746B (1% reduction) after compression.
priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.naturalis.nl/static/behaviour/modernizr.custom.js
http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
Optimize CSS Delivery of the following:
http://www.naturalis.nl/static/presentation/main.css
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css
http://www.naturalis.nl/static/presentation/druktemeter.css
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css
http://www.naturalis.nl/static/presentation/druktemeter.css
priority - 6Reduce server response time
priority - 4Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 33.2KiB (24% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2015/07/1NADF_itembanner.jpg could save 16.3KiB (52% reduction).
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Losslessly compressing http://www.naturalis.nl/media/library/2014/11/Kinderen_homepage.jpg could save 850B (8% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2014/12/Zakelijk_home.jpg could save 846B (7% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2015/07/Educatie_275x117.jpg could save 838B (3% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2014/11/Alpaca_275x275.jpg could save 837B (5% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…meter/scale_wijzer.png could save 837B (39% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…r/container_center.png could save 834B (87% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…er/container_right.png could save 823B (57% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…ter/container_left.png could save 790B (54% reduction).
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Losslessly compressing http://www.naturalis.nl/static/presentation/logos/naturalis-logo-big-wi.png could save 2.8KiB (34% reduction).
Losslessly compressing http://www.google.com/uds/css/small-logo.png could save 1.1KiB (72% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2014/11/Kinderen_homepage.jpg could save 850B (8% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2014/12/Zakelijk_home.jpg could save 846B (7% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2015/07/Educatie_275x117.jpg could save 838B (3% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2014/11/Alpaca_275x275.jpg could save 837B (5% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…meter/scale_wijzer.png could save 837B (39% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…r/container_center.png could save 834B (87% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…er/container_right.png could save 823B (57% reduction).
Losslessly compressing http://www.naturalis.nl/static/presentation/img/dr…ter/container_left.png could save 790B (54% reduction).
Losslessly compressing https://pbs.twimg.com/profile_images/4589721772665…2/1zZUTrrL_normal.jpeg could save 733B (47% reduction).
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Losslessly compressing https://pbs.twimg.com/profile_images/622127860069888000/_XxRMlbv_normal.jpg could save 702B (43% reduction).
priority - 3Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://naturalis.nl/
http://www.naturalis.nl/
http://www.naturalis.nl/nl/
http://www.naturalis.nl/
http://www.naturalis.nl/nl/
priority - 3Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 28.5KiB (20% reduction).
Minifying http://www.naturalis.nl/static/presentation/main.css could save 16.6KiB (19% reduction).
Minifying http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css could save 4.4KiB (20% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…883ad41/default+en.css could save 3.9KiB (40% reduction) after compression.
Minifying http://www.naturalis.nl/static/presentation/druktemeter.css could save 1.9KiB (15% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 1.7KiB (20% reduction).
Minifying http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css could save 4.4KiB (20% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…883ad41/default+en.css could save 3.9KiB (40% reduction) after compression.
Minifying http://www.naturalis.nl/static/presentation/druktemeter.css could save 1.9KiB (15% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 1.7KiB (20% reduction).
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.7KiB (18% reduction).
Minifying http://www.naturalis.nl/nl/ could save 1.7KiB (18% reduction) after compression.
naturalis.nl Desktop Resource Breakdown
| Total Resources | 83 |
| Number of Hosts | 16 |
| Static Resources | 71 |
| JavaScript Resources | 23 |
| CSS Resources | 5 |
naturalis.nl mobile page speed rank
Last tested: 2019-01-26
Mobile Speed
Bad
38/100
naturalis.nl Mobile Speed Test Quick Summary
priority - 57Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 554.7KiB (77% reduction).
Compressing http://www.naturalis.nl/static/behaviour/moment.js could save 272.8KiB (80% reduction).
Compressing http://www.naturalis.nl/static/presentation/main.css could save 68.6KiB (76% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 46.2KiB (72% reduction).
Compressing http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 38.6KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 27.7KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 24.3KiB (83% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 21.4KiB (74% reduction).
Compressing http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css could save 18.9KiB (82% reduction).
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Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 7.1KiB (79% reduction).
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Compressing http://www.naturalis.nl/media/widget.xml could save 683B (50% reduction).
Compressing http://www.naturalis.nl/static/presentation/main.css could save 68.6KiB (76% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 46.2KiB (72% reduction).
Compressing http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 38.6KiB (74% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 27.7KiB (74% reduction).
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Compressing http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css could save 18.9KiB (82% reduction).
Compressing http://www.naturalis.nl/static/presentation/druktemeter.css could save 10.6KiB (82% reduction).
Compressing http://www.naturalis.nl/static/behaviour/engine.js could save 10.2KiB (70% reduction).
Compressing http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css could save 7.1KiB (79% reduction).
Compressing http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 6KiB (75% reduction).
Compressing http://www.naturalis.nl/static/behaviour/modernizr.custom.js could save 1.6KiB (49% reduction).
Compressing http://www.naturalis.nl/media/widget.xml could save 683B (50% reduction).
priority - 49Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://www.naturalis.nl/media/cache/12/f8/12f8362d…056f6bb5cc246beb8c.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/15/ed/15ed6eb7…b45599015ad3221b97.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/19/be/19bed4e6…4a3678a547ba66a076.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/1d/33/1d33bccb…ae2fcd6a6dfdbb73b5.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/2e/bd/2ebd9ade…cef3eeaccfbe935ac4.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/3f/7f/3f7fcc69…6397322070da1e7472.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/55/b2/55b2abc9…b44ea8ff98ed14e1c1.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/56/ce/56cec1f8…03ab3cc482f1b7ab28.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/88/66/886691d3…60f21ee44f3813e2d4.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/97/7f/977f9196…febf1e65d9c376f776.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/9b/64/9b64b72f…f3e60ac7ad6a6ad79a.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/a0/61/a061bef0…65ef1fa1b71598cd4f.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/b1/3d/b13d4c06…9f99ef1c10f8a6b84f.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/b4/a2/b4a209f0…ebb5f35fe4d783e0ef.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/d3/cf/d3cf0ec9…a3178133e03642baf3.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/d5/13/d5138fca…44a66567b85cdf9897.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2013/03/onlinetickets.png (expiration not specified)
http://www.naturalis.nl/media/library/2014/11/Alpaca_275x275.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2014/11/Kinderen_homepage.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2014/12/Zakelijk_home.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2015/07/1NADF_itembanner.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2015/07/Educatie_275x117.jpg (expiration not specified)
http://www.naturalis.nl/media/presentation/img/bgl_200.png (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemet…atepicker-locale.nl.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemeter.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/engine.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.ui.datepicker-nl.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.validate.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.validate.language.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/modernizr.custom.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/moment.js (expiration not specified)
http://www.naturalis.nl/static/presentation/backgrounds/menu-columns.png (expiration not specified)
http://www.naturalis.nl/static/presentation/backgr…ge-2columns-noleft.png (expiration not specified)
http://www.naturalis.nl/static/presentation/druktemeter.css (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/close.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-facebook.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-flickr.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-twitter.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-youtube.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/search.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/twitter-more.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…r/container_center.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…ter/container_left.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…er/container_right.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/druktemeter/gradient.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…meter/scale_wijzer.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/science-header.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/shell-trans.png (expiration not specified)
http://www.naturalis.nl/static/presentation/logos/naturalis-logo-big-wi.png (expiration not specified)
http://www.naturalis.nl/static/presentation/main.css (expiration not specified)
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css (expiration not specified)
http://cse.google.com/adsense/search/async-ads.js (60 minutes)
http://js-agent.newrelic.com/nr-100.js (60 minutes)
http://s3.amazonaws.com/ki.js/49105/a82.js (60 minutes)
http://www.google.com/uds/?file=search&v=1 (60 minutes)
http://www.google.nl/jsapi (60 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
http://images.ncbnaturalis.nl/299x203/178778.jpg.jpg (4 hours)
http://mtrack.nl/js/v2.js?c=naturali&s=wwwnatu1494&v=2.1 (4 hours)
http://www.naturalis.nl/media/cache/15/ed/15ed6eb7…b45599015ad3221b97.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/19/be/19bed4e6…4a3678a547ba66a076.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/1d/33/1d33bccb…ae2fcd6a6dfdbb73b5.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/2e/bd/2ebd9ade…cef3eeaccfbe935ac4.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/3f/7f/3f7fcc69…6397322070da1e7472.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/55/b2/55b2abc9…b44ea8ff98ed14e1c1.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/56/ce/56cec1f8…03ab3cc482f1b7ab28.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/88/66/886691d3…60f21ee44f3813e2d4.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/97/7f/977f9196…febf1e65d9c376f776.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/9b/64/9b64b72f…f3e60ac7ad6a6ad79a.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/a0/61/a061bef0…65ef1fa1b71598cd4f.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/b1/3d/b13d4c06…9f99ef1c10f8a6b84f.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/b4/a2/b4a209f0…ebb5f35fe4d783e0ef.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/d3/cf/d3cf0ec9…a3178133e03642baf3.jpg (expiration not specified)
http://www.naturalis.nl/media/cache/d5/13/d5138fca…44a66567b85cdf9897.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2013/03/onlinetickets.png (expiration not specified)
http://www.naturalis.nl/media/library/2014/11/Alpaca_275x275.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2014/11/Kinderen_homepage.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2014/12/Zakelijk_home.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2015/07/1NADF_itembanner.jpg (expiration not specified)
http://www.naturalis.nl/media/library/2015/07/Educatie_275x117.jpg (expiration not specified)
http://www.naturalis.nl/media/presentation/img/bgl_200.png (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemet…atepicker-locale.nl.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/druktemeter.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/engine.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.ui.datepicker-nl.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.validate.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/jquery.validate.language.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/modernizr.custom.js (expiration not specified)
http://www.naturalis.nl/static/behaviour/moment.js (expiration not specified)
http://www.naturalis.nl/static/presentation/backgrounds/menu-columns.png (expiration not specified)
http://www.naturalis.nl/static/presentation/backgr…ge-2columns-noleft.png (expiration not specified)
http://www.naturalis.nl/static/presentation/druktemeter.css (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/close.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-facebook.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-flickr.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-twitter.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/icon-youtube.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/search.png (expiration not specified)
http://www.naturalis.nl/static/presentation/icons/twitter-more.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…r/container_center.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…ter/container_left.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…er/container_right.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/druktemeter/gradient.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/dr…meter/scale_wijzer.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/science-header.png (expiration not specified)
http://www.naturalis.nl/static/presentation/img/shell-trans.png (expiration not specified)
http://www.naturalis.nl/static/presentation/logos/naturalis-logo-big-wi.png (expiration not specified)
http://www.naturalis.nl/static/presentation/main.css (expiration not specified)
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css (expiration not specified)
http://cse.google.com/adsense/search/async-ads.js (60 minutes)
http://js-agent.newrelic.com/nr-100.js (60 minutes)
http://s3.amazonaws.com/ki.js/49105/a82.js (60 minutes)
http://www.google.com/uds/?file=search&v=1 (60 minutes)
http://www.google.nl/jsapi (60 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
http://images.ncbnaturalis.nl/299x203/178778.jpg.jpg (4 hours)
http://mtrack.nl/js/v2.js?c=naturali&s=wwwnatu1494&v=2.1 (4 hours)
priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.naturalis.nl/static/behaviour/modernizr.custom.js
http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
Optimize CSS Delivery of the following:
http://www.naturalis.nl/static/presentation/main.css
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css
http://www.naturalis.nl/static/presentation/druktemeter.css
http://www.naturalis.nl/static/presentation/ui-dar…y-ui-1.8.12.custom.css
http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.css
http://www.naturalis.nl/static/presentation/druktemeter.css
priority - 21Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 201KiB (31% reduction).
Minifying http://www.naturalis.nl/static/behaviour/moment.js could save 140.8KiB (42% reduction).
Minifying http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 15.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 13.7KiB (47% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 12.8KiB (35% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 7.9KiB (28% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 4.4KiB (55% reduction).
Minifying http://www.naturalis.nl/static/behaviour/engine.js could save 4.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 1.4KiB (3% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…83ad41/default+en.I.js could save 746B (1% reduction) after compression.
Minifying http://www.naturalis.nl/static/behaviour/druktemeter-datepicker.js could save 15.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.nivo.slider.js could save 13.7KiB (47% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.validate.js could save 12.8KiB (35% reduction).
Minifying http://www.naturalis.nl/static/behaviour/fancybox/jquery.fancybox-1.3.4.js could save 7.9KiB (28% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery.easing.1.3.js could save 4.4KiB (55% reduction).
Minifying http://www.naturalis.nl/static/behaviour/engine.js could save 4.2KiB (30% reduction).
Minifying http://www.naturalis.nl/static/behaviour/jquery-ui-1.8.13.custom.min.js could save 1.4KiB (3% reduction).
Minifying http://www.google.com/uds/api/search/1.0/56f70d816…83ad41/default+en.I.js could save 746B (1% reduction) after compression.
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://naturalis.nl/
http://www.naturalis.nl/
http://www.naturalis.nl/nl/
http://www.naturalis.nl/
http://www.naturalis.nl/nl/
priority - 5Reduce server response time
priority - 4Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 33.2KiB (24% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2015/07/1NADF_itembanner.jpg could save 16.3KiB (52% reduction).
Losslessly compressing http://www.naturalis.nl/media/library/2013/03/onlinetickets.png could save 4.4KiB (52% reduction).
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naturalis.nl Mobile Resource Breakdown
| Total Resources | 83 |
| Number of Hosts | 16 |
| Static Resources | 71 |
| JavaScript Resources | 23 |
| CSS Resources | 5 |
naturalis.nl mobile page usability
Last tested: 2019-01-26
Mobile Usability
Bad
64/100
naturalis.nl Mobile Usability Test Quick Summary
priority - 40Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
Op avontuur als Freek renders only 6 pixels tall (16 CSS pixels).Google Street View and 2 others render only 6 pixels tall (16 CSS pixels).Soort van de dag and 6 others render only 7 pixels tall (20 CSS pixels).Spelletjes, fi…spreekbeurten and 6 others render only 5 pixels tall (14 CSS pixels).Vier je verjaa…neemt je mee. and 5 others render only 4 pixels tall (12 CSS pixels).Meer Nederland…ren en planten and 10 others render only 4 pixels tall (12 CSS pixels).10:00 - 17:00 and 7 others render only 4 pixels tall (12 CSS pixels).Klokhuisafleve…g Dierenzoeker and 7 others render only 4 pixels tall (12 CSS pixels).Nieuwsbrief renders only 7 pixels tall (20 CSS pixels).Op de hoogte b…de nieuwsbrief renders only 5 pixels tall (15 CSS pixels).Aanmelden renders only 5 pixels tall (15 CSS pixels).Ons wetenschap…samenstelling. renders only 4 pixels tall (12 CSS pixels).Direct naar renders only 7 pixels tall (20 CSS pixels).Collectie en digitalisering and 3 others render only 4 pixels tall (12 CSS pixels).Naturalis After Dark Festival and 5 others render only 7 pixels tall (20 CSS pixels).Wetenschap, mu…p 25 september and 6 others render only 4 pixels tall (12 CSS pixels).Diensten van N…versity Center and 2 others render only 4 pixels tall (12 CSS pixels).|…itsbergen 2015 and 2 others render only 4 pixels tall (12 CSS pixels).museumnaturalis renders only 7 pixels tall (20 CSS pixels).RT @ZHLandscha…turalis #LH071 and 3 others render only 4 pixels tall (12 CSS pixels).8 uur geleden and 2 others render only 4 pixels tall (12 CSS pixels).Volg ons op twitter renders only 4 pixels tall (12 CSS pixels).Eén ingang naa…biodiversiteit renders only 7 pixels tall (20 CSS pixels).aturalis is nu and 1 others render only 4 pixels tall (12 CSS pixels).Natuurapps voor Android and 1 others render only 7 pixels tall (21 CSS pixels).Reptielen en A…van Nederland and 15 others render only 4 pixels tall (11 CSS pixels).11.99 and 15 others render only 4 pixels tall (11 CSS pixels).U bevindt zich hier: renders only 5 pixels tall (15 CSS pixels).Home renders only 5 pixels tall (15 CSS pixels).Copyright 2015 Naturalis and 1 others render only 4 pixels tall (12 CSS pixels).Disclaimer and 2 others render only 4 pixels tall (12 CSS pixels).Te zien en te doen and 5 others render only 6 pixels tall (17 CSS pixels).EN renders only 4 pixels tall (12 CSS pixels).priority - 10Configure the viewport
Your page specifies a fixed-width desktop viewport. Use a responsive viewport to allow your page to render properly on all devices.
priority - 8Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="/nl/zakelijk/c…ergaderruimte/">Congreszalen</a> and 6 others are close to other tap targets.The tap target
<a href="/nl/het-museum…ek-herfst-2012">10:00 - 17:00…Doe en ontdek</a> and 7 others are close to other tap targets.The tap target
<a href="http://www.rep….naturalis.nl/">Alle publicaties</a> and 3 others are close to other tap targets.The tap target
<a href="https://twitte…useumnaturalis" class="icon-twitter ir">Twitter</a> is close to 2 other tap targets.The tap target
<a href="https://facebo…useumnaturalis" class="icon-facebook ir">Facebook</a> is close to 3 other tap targets.The tap target
<a href="http://www.fli…otos/naturalis" class="icon-flickr ir">Flickr</a> is close to 3 other tap targets.The tap target
<a href="http://www.you…aturalisLeiden" class="icon-youtube ir">Youtube</a> is close to 2 other tap targets.The tap target
<a href="/nl/over-ons/n…tsbergen-2015/" class="text-block tex…ext-block-news">17-08-2015 |…itsbergen 2015</a> and 1 others are close to other tap targets.The tap target
<a href="http://www.nat…er-ons/nieuws/" class="more-link">Meer nieuws</a> is close to 1 other tap targets.The tap target
<a href="http://www.twi…DeAlexdevries/">DeAlexdevries</a> and 2 others are close to other tap targets.The tap target
<a href="http://www.twi…1273347698688/">Hierna zal uw….co/PAm6j9QRCE</a> and 9 others are close to other tap targets.The tap target
<a href="/nl/info/colofon/">Colofon</a> and 1 others are close to other tap targets.The tap target
<a href="/nl/" class="nav-home-link">Voorpagina</a> is close to 2 other tap targets.The tap target
<a href="/nl/bezoek/">Bezoekersinfo</a> and 3 others are close to other tap targets.The tap target
<a href="/en/">EN</a> is close to 3 other tap targets.The tap target
<a href="/en/">EN</a> is close to 3 other tap targets.The tap target
<a id="search-box-toggle" href="#">Zoek</a> is close to 2 other tap targets.naturalis.nl HTML validation
Errors
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 113 Column: 11 - 2
"...<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1494624640811932&ev=PageView&noscript=1" /></nosc..." Line: 364 Column: 17 - 92
"... <img src="/media/library/2016/12/defroutekaart_home.jpg" class="map__img" /> ..."
"...<noscript><img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1494624640811932&ev=PageView&noscript=1" /></nosc..." Line: 364 Column: 17 - 92
"... <img src="/media/library/2016/12/defroutekaart_home.jpg" class="map__img" /> ..."
Duplicate ID “svg-close”.
Line: 380 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..." Line: 446 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..."
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..." Line: 446 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..."
Stray start tag “div”.
Line: 510 Column: 5 - 41
"...tml> <div style="background-color: pink;"> ..."
"...tml> <div style="background-color: pink;"> ..."
Cannot recover after last error. Any further errors will be ignored.
Line: 510 Column: 5 - 41
"...tml> <div style="background-color: pink;"> ..."
"...tml> <div style="background-color: pink;"> ..."
Warnings
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Line: 209 Column: 5 - 61
".../div> <section class="site-header__section content-section-js"> ..." Line: 306 Column: 5 - 56
"...tion> <section class="plan-your-visit content-section-js"> ..."
".../div> <section class="site-header__section content-section-js"> ..." Line: 306 Column: 5 - 56
"...tion> <section class="plan-your-visit content-section-js"> ..."
The first occurrence of ID “svg-close” was here.
Line: 315 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..." Line: 315 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..."
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..." Line: 315 Column: 5 - 132
"...itle> <g id="svg-close" stroke-width="5" stroke="#FFF" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"> ..."
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naturalis.nl Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
naturalis.nl TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.