sron.nl website information.
sron.nl domain name is registered by .NL top-level domain registry. See the other sites registred in .NL domain zone.
Following name servers are specified for sron.nl domain:
- ns2.sron.nl
- ns1.surfnet.nl
- ns1.sron.nl
and probably website sron.nl is hosted by AMAZON-AES - Amazon.com, Inc., US web hosting company. Check the complete list of other most popular websites hosted by AMAZON-AES - Amazon.com, Inc., US hosting company.
According to Alexa traffic rank the highest website sron.nl position was 75050 (in the world). The lowest Alexa rank position was 999860. Now website sron.nl ranked in Alexa database as number 113648 (in the world).
Website sron.nl Desktop speed measurement score (11/100) is better than the results of 1.71% of other sites shows that the page desktop performance can be improved.
sron.nl Mobile usability score (98/100) is better than the results of 55.61% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of sron.nl (10/100) is better than the results of 1.52% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-18-2024 | 113,648 | -157 |
| Nov-17-2024 | 113,491 | 2,699 |
| Nov-16-2024 | 116,190 | -2,955 |
| Nov-15-2024 | 113,235 | 1,189 |
| Nov-14-2024 | 114,424 | -2,759 |
| Nov-13-2024 | 111,665 | 0 |
| Nov-12-2024 | 111,665 | 0 |
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sron.nl Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
sron.nl whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
Domain name: sron.nl
Status: active
Registrar:
SURF B.V.
Moreelsepark 48
3511EP Utrecht
Netherlands
Abuse Contact:
+31.887873000
cert@surfcert.nl
Creation Date: 1998-02-09
Updated Date: 2021-05-14
DNSSEC: no
Domain nameservers:
ns3.sron.nl 2001:610:1409:1::20
ns3.sron.nl 192.87.212.20
ns2.surfnet.nl
ns1.surfnet.nl
Record maintained by: NL Domain Registry
Copyright notice
No part of this publication may be reproduced, published, stored in a
retrieval system, or transmitted, in any form or by any means,
electronic, mechanical, recording, or otherwise, without prior
permission of the Foundation for Internet Domain Registration in the
Netherlands (SIDN).
These restrictions apply equally to registrars, except in that
reproductions and publications are permitted insofar as they are
reasonable, necessary and solely in the context of the registration
activities referred to in the General Terms and Conditions for .nl
Registrars.
Any use of this material for advertising, targeting commercial offers or
similar activities is explicitly forbidden and liable to result in legal
action. Anyone who is aware or suspects that such activities are taking
place is asked to inform the Foundation for Internet Domain Registration
in the Netherlands.
(c) The Foundation for Internet Domain Registration in the Netherlands
(SIDN) Dutch Copyright Act, protection of authors' rights (Section 10,
subsection 1, clause 1).
sron.nl server information
sron.nl desktop page speed rank
Last tested: 2019-10-13
Desktop Speed
Bad
11/100
sron.nl Desktop Speed Test Quick Summary
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priority - 27 Leverage 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:
https://www.sron.nl/cache/mod_bt_contentslider/13a…4db3f-banner_edit2.png (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/16d…887a39ca637b-ARIEL.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/685…b703184b-baselmans.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…3bc5aed81_envisat1.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…55e4dc0_baselmans2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…b46f4da4c2_athena2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…eb19a_annual-rep01.png (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…uisvestingleiden02.png (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…19a_jubileum50jaar.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…d70d30b3_dercksen1.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…6d4425_exoplanets1.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…5_d8f6a371ed_hifi2.jpg (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogo06.png (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogoext04.png (expiration not specified)
https://www.sron.nl/images/administrator/work_at_sron05b.png (expiration not specified)
https://www.sron.nl/images/banners/banner44a.jpg (expiration not specified)
https://www.sron.nl/images/banners/slider05.jpg (expiration not specified)
https://www.sron.nl/images/other/NWO_logo_diap_small.png (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider01a.jpg (expiration not specified)
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https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js (expiration not specified)
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https://www.sron.nl/plugins/content/fastsocialshare/style/style.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/addons.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/custom.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/responsive.css (expiration not specified)
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https://www.sron.nl/cache/mod_bt_contentslider/16d…887a39ca637b-ARIEL.jpg (expiration not specified)
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https://www.sron.nl/images/banners/banner44a.jpg (expiration not specified)
https://www.sron.nl/images/banners/slider05.jpg (expiration not specified)
https://www.sron.nl/images/other/NWO_logo_diap_small.png (expiration not specified)
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https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/images/loader_dark.gif (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css (expiration not specified)
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/addons.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/custom.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/responsive.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/template.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/updates.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-down.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-up.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/swapper-indicator.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/custom.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/plugins.js (expiration not specified)
https://assets.pinterest.com/js/pinit.js (3 minutes)
https://assets.pinterest.com/js/pinit_main.js?0.6154106731992215 (3.6 minutes)
https://syndication.twitter.com/settings (10 minutes)
https://connect.facebook.net/en_GB/sdk.js (20 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://platform.linkedin.com/in.js (60 minutes)
priority - 8 Reduce server response time
In our test, your server responded in 1 second.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 8 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 14 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.sron.nl/media/jui/js/jquery.min.js?c2b…506097e2a1dc8430cdc166
https://www.sron.nl/media/jui/js/jquery-noconflict…506097e2a1dc8430cdc166
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https://www.sron.nl/media/system/js/caption.js?c2b…506097e2a1dc8430cdc166
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js
https://www.sron.nl/templates/ammon_v2/js/plugins.js
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js
https://www.sron.nl/templates/ammon_v2/js/custom.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js
https://www.sron.nl/media/jui/js/jquery-noconflict…506097e2a1dc8430cdc166
https://www.sron.nl/media/jui/js/jquery-migrate.mi…506097e2a1dc8430cdc166
https://www.sron.nl/media/system/js/caption.js?c2b…506097e2a1dc8430cdc166
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js
https://www.sron.nl/templates/ammon_v2/js/plugins.js
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js
https://www.sron.nl/templates/ammon_v2/js/custom.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js
Optimize CSS Delivery of the following:
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css
https://www.sron.nl/templates/ammon_v2/css/addons.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css
https://www.sron.nl/templates/ammon_v2/css/template.css
https://www.sron.nl/templates/ammon_v2/css/updates.css
https://www.sron.nl/templates/ammon_v2/css/custom.css
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
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https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css
https://www.sron.nl/templates/ammon_v2/css/responsive.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css
https://www.sron.nl/templates/ammon_v2/css/addons.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css
https://www.sron.nl/templates/ammon_v2/css/template.css
https://www.sron.nl/templates/ammon_v2/css/updates.css
https://www.sron.nl/templates/ammon_v2/css/custom.css
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Maven+Pro:…subset=latin,latin-ext
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css
https://www.sron.nl/templates/ammon_v2/css/responsive.css
priority - 1 Minify 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 6.4KiB (32% reduction).
Minifying https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js could save 2.8KiB (51% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js could save 1.4KiB (15% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
Minifying https://connect.facebook.net/en_GB/sdk.js could save 673B (39% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js could save 380B (26% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js could save 122B (25% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js could save 1.4KiB (15% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
Minifying https://connect.facebook.net/en_GB/sdk.js could save 673B (39% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js could save 380B (26% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js could save 122B (25% reduction) after compression.
priority - 0 Minify 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 4.8KiB (18% reduction).
Minifying https://www.sron.nl/templates/ammon_v2/css/template.css could save 3.4KiB (18% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/responsive.css could save 603B (20% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css could save 314B (14% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/custom.css could save 225B (31% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css could save 172B (18% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css could save 120B (15% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/responsive.css could save 603B (20% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css could save 314B (14% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/custom.css could save 225B (31% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css could save 172B (18% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css could save 120B (15% reduction) after compression.
priority - 0 Minify 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 1.2KiB (12% reduction).
Minifying https://www.sron.nl/ could save 1.2KiB (12% reduction) after compression.
sron.nl Desktop Resources
| Total Resources | 84 |
| Number of Hosts | 13 |
| Static Resources | 62 |
| JavaScript Resources | 24 |
| CSS Resources | 13 |
sron.nl Desktop Resource Breakdown
sron.nl mobile page speed rank
Last tested: 2017-05-14
Mobile Speed
Bad
10/100
sron.nl Mobile Speed Test Quick Summary
priority - 446 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 4.3MiB (61% reduction).
Compressing https://www.sron.nl/images/banners/slider05.jpg could save 1.6MiB (75% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider04.jpg could save 1.3MiB (74% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider03.jpg could save 843.4KiB (75% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider02.jpg could save 164.2KiB (33% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…14f5eb19a_strategy.png could save 106.7KiB (41% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…eb19a_annual-rep01.png could save 85.8KiB (33% reduction).
Compressing https://www.sron.nl/images/newsimg/2017/tropomi-satellite-image.png could save 79.1KiB (13% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…19a_jubileum50jaar.jpg could save 40.8KiB (72% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider01.jpg could save 22.6KiB (17% reduction).
Compressing https://www.sron.nl/images/SRON/SRONlogoext04.png could save 3.5KiB (31% reduction).
Compressing https://www.sron.nl/images/SRON/SRONlogo06.png could save 2.6KiB (39% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider04.jpg could save 1.3MiB (74% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider03.jpg could save 843.4KiB (75% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider02.jpg could save 164.2KiB (33% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…14f5eb19a_strategy.png could save 106.7KiB (41% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…eb19a_annual-rep01.png could save 85.8KiB (33% reduction).
Compressing https://www.sron.nl/images/newsimg/2017/tropomi-satellite-image.png could save 79.1KiB (13% reduction).
Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…19a_jubileum50jaar.jpg could save 40.8KiB (72% reduction).
Compressing https://www.sron.nl/images/sliders/full_slider/slider01.jpg could save 22.6KiB (17% reduction).
Compressing https://www.sron.nl/images/SRON/SRONlogoext04.png could save 3.5KiB (31% reduction).
Compressing https://www.sron.nl/images/SRON/SRONlogo06.png could save 2.6KiB (39% reduction).
priority - 35 Leverage 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:
https://www.sron.nl/cache/mod_bt_contentslider/4cc…5e091bc7-horsehead.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/619…c330-Gerard-Messe2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/b61…8d8-seqD_063a_half.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/d15…03-05-17-15-37-52.jpeg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/d96…-Science_Park_Uva2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/f88…flume-boorplatform.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…eb19a_annual-rep01.png (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…19a_jubileum50jaar.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…14f5eb19a_strategy.png (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogo06.png (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogoext04.png (expiration not specified)
https://www.sron.nl/images/banners/slider05.jpg (expiration not specified)
https://www.sron.nl/images/newsimg/2017/tropomi-satellite-image.png (expiration not specified)
https://www.sron.nl/images/other/logo-NWO.png (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider01.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider02.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider03.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider04.jpg (expiration not specified)
https://www.sron.nl/media/jui/js/jquery-migrate.min.js (expiration not specified)
https://www.sron.nl/media/jui/js/jquery-noconflict.js (expiration not specified)
https://www.sron.nl/media/jui/js/jquery.min.js (expiration not specified)
https://www.sron.nl/media/system/js/caption.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_featureboxes/assets/styles.css (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/images/loader_dark.gif (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css (expiration not specified)
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/addons.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/custom.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/responsive.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/template.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/updates.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-down.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-up.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/custom.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/plugins.js (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/619…c330-Gerard-Messe2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/b61…8d8-seqD_063a_half.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/d15…03-05-17-15-37-52.jpeg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/d96…-Science_Park_Uva2.jpg (expiration not specified)
https://www.sron.nl/cache/mod_bt_contentslider/f88…flume-boorplatform.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…eb19a_annual-rep01.png (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…19a_jubileum50jaar.jpg (expiration not specified)
https://www.sron.nl/cache/mod_hg_showcaseitems/400…14f5eb19a_strategy.png (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogo06.png (expiration not specified)
https://www.sron.nl/images/SRON/SRONlogoext04.png (expiration not specified)
https://www.sron.nl/images/banners/slider05.jpg (expiration not specified)
https://www.sron.nl/images/newsimg/2017/tropomi-satellite-image.png (expiration not specified)
https://www.sron.nl/images/other/logo-NWO.png (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider01.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider02.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider03.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider04.jpg (expiration not specified)
https://www.sron.nl/media/jui/js/jquery-migrate.min.js (expiration not specified)
https://www.sron.nl/media/jui/js/jquery-noconflict.js (expiration not specified)
https://www.sron.nl/media/jui/js/jquery.min.js (expiration not specified)
https://www.sron.nl/media/system/js/caption.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js (expiration not specified)
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_featureboxes/assets/styles.css (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/assets/images/loader_dark.gif (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js (expiration not specified)
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css (expiration not specified)
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/addons.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/custom.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/responsive.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/template.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/css/updates.css (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-down.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/images/shadow-up.png (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/custom.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js (expiration not specified)
https://www.sron.nl/templates/ammon_v2/js/plugins.js (expiration not specified)
priority - 32 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 14 blocking script resources and 14 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.sron.nl/media/jui/js/jquery.min.js
https://www.sron.nl/media/jui/js/jquery-noconflict.js
https://www.sron.nl/media/jui/js/jquery-migrate.min.js
https://www.sron.nl/media/system/js/caption.js
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js
https://www.sron.nl/templates/ammon_v2/js/plugins.js
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js
https://www.sron.nl/templates/ammon_v2/js/custom.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js
https://www.sron.nl/media/jui/js/jquery-noconflict.js
https://www.sron.nl/media/jui/js/jquery-migrate.min.js
https://www.sron.nl/media/system/js/caption.js
https://www.sron.nl/templates/ammon_v2/js/bootstrap.min.js
https://www.sron.nl/templates/ammon_v2/js/modernizr-2.8.2.js
https://www.sron.nl/templates/ammon_v2/js/plugins.js
https://www.sron.nl/templates/ammon_v2/js/ammon_scripts.js
https://www.sron.nl/templates/ammon_v2/js/custom.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js
https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/default.js
https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js
https://www.sron.nl/modules/mod_hg_iosslider/asset…y.iosslider.kalypso.js
Optimize CSS Delivery of the following:
https://www.sron.nl/templates/ammon_v2/css/bootstrap.min.css
https://www.sron.nl/templates/ammon_v2/css/addons.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css
https://www.sron.nl/templates/ammon_v2/css/template.css
https://www.sron.nl/templates/ammon_v2/css/updates.css
https://www.sron.nl/templates/ammon_v2/css/custom.css
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Maven+Pro:…subset=latin,latin-ext
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css
https://www.sron.nl/modules/mod_hg_featureboxes/assets/styles.css
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css
https://www.sron.nl/templates/ammon_v2/css/responsive.css
https://www.sron.nl/templates/ammon_v2/css/addons.css
https://www.sron.nl/templates/ammon_v2/css/bootstrap-theme.css
https://www.sron.nl/templates/ammon_v2/css/template.css
https://www.sron.nl/templates/ammon_v2/css/updates.css
https://www.sron.nl/templates/ammon_v2/css/custom.css
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Maven+Pro:…subset=latin,latin-ext
https://www.sron.nl/plugins/content/fastsocialshare/style/style.css
https://www.sron.nl/modules/mod_hg_showcaseitems/assets/styles.css
https://www.sron.nl/modules/mod_hg_featureboxes/assets/styles.css
https://www.sron.nl/modules/mod_bt_contentslider/t…ss/btcontentslider.css
https://www.sron.nl/modules/mod_hg_iosslider/assets/css/style.css
https://www.sron.nl/templates/ammon_v2/css/responsive.css
priority - 2 Reduce server response time
In our test, your server responded in 0.31 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 1 Minify 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 5.3KiB (32% reduction).
Minifying https://www.sron.nl/modules/mod_bt_contentslider/tmpl/js/slides.js could save 2.8KiB (51% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js could save 1.4KiB (15% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_hg_iosslider/asset…query.iosslider.min.js could save 1.4KiB (15% reduction) after compression.
Minifying https://www.sron.nl/modules/mod_bt_contentslider/t…s/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
priority - 0 Minify 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 4KiB (18% reduction).
Minifying https://www.sron.nl/templates/ammon_v2/css/template.css could save 3.4KiB (18% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/responsive.css could save 603B (20% reduction) after compression.
Minifying https://www.sron.nl/templates/ammon_v2/css/responsive.css could save 603B (20% reduction) after compression.
priority - 0 Minify 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 1.3KiB (13% reduction).
Minifying https://www.sron.nl/ could save 1.3KiB (13% reduction) after compression.
sron.nl Mobile Resources
| Total Resources | 57 |
| Number of Hosts | 4 |
| Static Resources | 49 |
| JavaScript Resources | 14 |
| CSS Resources | 14 |
sron.nl Mobile Resource Breakdown
sron.nl mobile page usability
Last tested: 2017-05-14
Mobile Usability
Good
98/100
sron.nl Mobile Usability Test Quick Summary
priority - 1 Size 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
<label for="chkbx_search"></label> and 1 others are close to other tap targets.The tap target
<div class="item first selected"> is close to 1 other tap targets.The tap target
<div class="item"> and 3 others are close to other tap targets.The tap target
<a href="mailto:info@sr…ffice of SRON.">contact press office</a> and 2 others are close to other tap targets.sron.nl similar domains
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sron.nl Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
sron.nl TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.