sron.nl Website Information
Daily Unique Visits: 11,908
Daily Page Views: 59,540
Income Per Day: $149
Estimated Value: $89,400
This website is located in Netherlands and is using following IP address 192.87.213.25. See the complete list of popular websites hosted in Netherlands.
sron.nl is registered under .NL top-level domain. Please check other sites in .NL zone.
Website sron.nl is using the following name servers:
- ns2.sron.nl
- ns1.surfnet.nl
- ns1.sron.nl
and is probably hosted by SURFnet bv. See the full list of other websites hosted by SURFnet bv.
The highest website sron.nl position in Alexa rank database was 75050 and the lowest rank position was 999860. Current position of sron.nl in Alexa rank database is 114424.
Desktop speed score of sron.nl (11/100) is better than the results of 1.71% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of sron.nl (98/100) is better than the results of 55.61% of other sites and means that the page is mobile-friendly.
Mobile speed 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.
Advertisement
sron.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.
sron.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: 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).
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
Servers Location
sron.nl desktop page speed rank
Last tested: 2019-10-13
Desktop Speed
Bad
11/100
sron.nl Desktop Speed Test Quick Summary
priority - 449Optimize images
Properly formatting and compressing images can save many bytes of data.
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Compressing https://www.sron.nl/cache/mod_hg_showcaseitems/400…uisvestingleiden02.png could save 128.6KiB (49% reduction).
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Compressing and resizing https://www.sron.nl/images/other/NWO_logo_diap_small.png could save 23.5KiB (75% reduction).
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priority - 27Leverage 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)
https://www.sron.nl/images/sliders/full_slider/slider02.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider04a.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider07.png (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider08.jpg (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_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)
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)
https://www.sron.nl/images/sliders/full_slider/slider02.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider04a.jpg (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider07.png (expiration not specified)
https://www.sron.nl/images/sliders/full_slider/slider08.jpg (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_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 - 8Reduce server response time
In our test, your server responded in 1 second.
priority - 8Eliminate 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.
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
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
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
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
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 - 1Minify 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 - 0Minify 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 - 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 1.2KiB (12% reduction).
Minifying https://www.sron.nl/ could save 1.2KiB (12% reduction) after compression.
sron.nl Desktop Resource Breakdown
| Total Resources | 84 |
| Number of Hosts | 13 |
| Static Resources | 62 |
| JavaScript Resources | 24 |
| CSS Resources | 13 |
sron.nl mobile page speed rank
Last tested: 2017-05-14
Mobile Speed
Bad
10/100
sron.nl Mobile Speed Test Quick Summary
priority - 446Optimize 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 - 35Leverage 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 - 32Eliminate 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.
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 - 2Reduce server response time
priority - 1Minify 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 - 0Minify 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 - 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 1.3KiB (13% reduction).
Minifying https://www.sron.nl/ could save 1.3KiB (13% reduction) after compression.
sron.nl Mobile Resource Breakdown
| Total Resources | 57 |
| Number of Hosts | 4 |
| Static Resources | 49 |
| JavaScript Resources | 14 |
| CSS Resources | 14 |
sron.nl mobile page usability
Last tested: 2017-05-14
Mobile Usability
Good
98/100
sron.nl Mobile Usability Test Quick Summary
priority - 1Size 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 HTML validation
Warnings
Consider avoiding viewport values that prevent users from resizing documents.
Line: 61 Column: 2 - 109
"...script> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" /> <lin..."
"...script> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" /> <lin..."
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Line: 388 Column: 4 - 36
"... <section class="system-messages"> <..." Line: 868 Column: 1 - 21
".../div> <section id="bottom"> <..."
"... <section class="system-messages"> <..." Line: 868 Column: 1 - 21
".../div> <section id="bottom"> <..."
The first occurrence of ID “mod725” was here.
Line: 586 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod725" data-id="725"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod725" data-id="725"> ..."
The first occurrence of ID “mod726” was here.
Line: 607 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod726" data-id="726"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod726" data-id="726"> ..."
The first occurrence of ID “mod727” was here.
Line: 628 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod727" data-id="727"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod727" data-id="727"> ..."
The first occurrence of ID “mod730” was here.
Line: 657 Column: 9 - 70
"...> <div class="moduletable col-sm-4" id="mod730" data-id="730"> ..."
"...> <div class="moduletable col-sm-4" id="mod730" data-id="730"> ..."
The first occurrence of ID “mod729” was here.
Line: 679 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod729" data-id="729"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod729" data-id="729"> ..."
The first occurrence of ID “mod728” was here.
Line: 700 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod728" data-id="728"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod728" data-id="728"> ..."
The first occurrence of ID “mod593” was here.
Line: 729 Column: 9 - 70
"...> <div class="moduletable col-sm-4" id="mod593" data-id="593"> ..."
"...> <div class="moduletable col-sm-4" id="mod593" data-id="593"> ..."
The first occurrence of ID “mod807” was here.
Line: 749 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod807" data-id="807"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod807" data-id="807"> ..."
The first occurrence of ID “mod595” was here.
Line: 769 Column: 4 - 65
"...iv> <div class="moduletable col-sm-4" id="mod595" data-id="595"> ..."
"...iv> <div class="moduletable col-sm-4" id="mod595" data-id="595"> ..."
Errors
Duplicate ID “mod725”.
Line: 594 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod725"> <..."
"...nt"> <div class="showcase-item" id="mod725"> <..."
Duplicate ID “mod726”.
Line: 615 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod726"> <..."
"...nt"> <div class="showcase-item" id="mod726"> <..."
Duplicate ID “mod727”.
Line: 636 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod727"> <..."
"...nt"> <div class="showcase-item" id="mod727"> <..."
Duplicate ID “mod730”.
Line: 665 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod730"> <..."
"...nt"> <div class="showcase-item" id="mod730"> <..."
Duplicate ID “mod729”.
Line: 687 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod729"> <..."
"...nt"> <div class="showcase-item" id="mod729"> <..."
Duplicate ID “mod728”.
Line: 708 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod728"> <..."
"...nt"> <div class="showcase-item" id="mod728"> <..."
Duplicate ID “mod593”.
Line: 737 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod593"> <..."
"...nt"> <div class="showcase-item" id="mod593"> <..."
Duplicate ID “mod807”.
Line: 757 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod807"> <..."
"...nt"> <div class="showcase-item" id="mod807"> <..."
Duplicate ID “mod595”.
Line: 777 Column: 1 - 39
"...nt"> <div class="showcase-item" id="mod595"> <..."
"...nt"> <div class="showcase-item" id="mod595"> <..."
The “align” attribute on the “img” element is obsolete. Use CSS instead.
Line: 843 Column: 70 - 134
"...t: 80px;"><img src="/images/SRON/SRONlogoext04.png" alt="" align="right" /></div>..."
"...t: 80px;"><img src="/images/SRON/SRONlogoext04.png" alt="" align="right" /></div>..."
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
Line: 848 Column: 5 - 29
"...body> <tr> <td valign="top" width="200"><a hre..." Line: 849 Column: 567 - 29
"...l</a></td> <td valign="top" width="200"><a hre..."
"...body> <tr> <td valign="top" width="200"><a hre..." Line: 849 Column: 567 - 29
"...l</a></td> <td valign="top" width="200"><a hre..."
The “width” attribute on the “td” element is obsolete. Use CSS instead.
Line: 848 Column: 5 - 29
"...body> <tr> <td valign="top" width="200"><a hre..." Line: 849 Column: 567 - 29
"...l</a></td> <td valign="top" width="200"><a hre..."
"...body> <tr> <td valign="top" width="200"><a hre..." Line: 849 Column: 567 - 29
"...l</a></td> <td valign="top" width="200"><a hre..."
Bad value “mailto:info@sron.nl?body=This email is sent to the press office of SRON.” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Line: 848 Column: 148 - 230
"... /> <br /><a href="mailto:info@sron.nl?body=This email is sent to the press office of SRON.">contac..."
"... /> <br /><a href="mailto:info@sron.nl?body=This email is sent to the press office of SRON.">contac..."
Bad value for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Line: 848 Column: 262 - 476
".../a><br /> <a href="mailto:ict@sron.nl?subject=Comment SRON website&body=This email is sent to ICT SRON. Please include the url of the page you comment on. Your comment will be forwarded to the administrator of the page.">contac..."
".../a><br /> <a href="mailto:ict@sron.nl?subject=Comment SRON website&body=This email is sent to ICT SRON. Please include the url of the page you comment on. Your comment will be forwarded to the administrator of the page.">contac..."
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Line: 854 Column: 1 - 46
"...le> <div> <p style="padding-right: 13px;" align="right"><a hre..." Line: 855 Column: 1 - 46
"...></a></p> <p style="padding-right: 13px;" align="right"><em><a..."
"...le> <div> <p style="padding-right: 13px;" align="right"><a hre..." Line: 855 Column: 1 - 46
"...></a></p> <p style="padding-right: 13px;" align="right"><em><a..."
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sron.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.
sron.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.