koncon.nl Website Information

Daily Unique Visits: 10,244

Daily Page Views: 51,220

Income Per Day: $128

Estimated Value: $76,800

This website is located in Netherlands and is using following IP address 185.173.21.177. See the complete list of popular websites hosted in Netherlands.

koncon.nl is registered under .NL top-level domain. Please check other sites in .NL zone.

Website koncon.nl is using the following name servers:

ns1.netrex.nl
ns2.netrex.nl

and is probably hosted by BIT BV. See the full list of other websites hosted by BIT BV.

The highest website koncon.nl position in Alexa rank database was 21203 and the lowest rank position was 999653. Current position of koncon.nl in Alexa rank database is 133002.

Desktop speed score of koncon.nl (77/100) is better than the results of 63.93% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of koncon.nl (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.

Mobile speed score of koncon.nl (62/100) is better than the results of 59.44% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

koncon.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.

koncon.nl whois

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whois.domain-registry.nl: maximum number of requests per second exceeded

koncon.nl server information

Servers Location

koncon.nl desktop page speed rank

Last tested: 2019-07-15

Desktop Speed Medium

77/100

koncon.nl Desktop Speed Test Quick Summary

priority - 12Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 119.2KiB (24% reduction).

Compressing https://www.koncon.nl/storage/media/_wide_md/aus-L…ational-Opera-0047.jpg could save 27.3KiB (33% reduction).
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priority - 12Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://d2wy8f7a9ursnm.cloudfront.net/v4/bugsnag.min.js
https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js
https://www.koncon.nl/js/scripts.js?rev=85bd5d9702…5db5e6b6a0afb1655885c4

Optimize CSS Delivery of the following:

https://www.koncon.nl/css/styles.css?rev=85bd5d970…5db5e6b6a0afb1655885c4

priority - 2Leverage 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.googletagmanager.com/gtm.js?id=GTM-TS96JJ3 (15 minutes)
https://maps.googleapis.com/maps/api/js?key=AIzaSy…k3IZsjCSI-8ZfmNwh7biq0 (30 minutes)
https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 2Reduce server response time

In our test, your server responded in 0.38 seconds.

priority - 0Enable 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 4.2KiB (72% reduction).

Compressing https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js could save 4.2KiB (72% 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 2.1KiB (22% reduction).

Minifying https://www.koncon.nl/ could save 2.1KiB (22% reduction) after compression.

priority - 0Minify 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 1.6KiB (28% reduction).

Minifying https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js could save 1.6KiB (28% reduction).

koncon.nl Desktop Resource Breakdown

Total Resources	39
Number of Hosts	8
Static Resources	35
JavaScript Resources	6
CSS Resources	1

koncon.nl mobile page speed rank

Last tested: 2019-07-15

Mobile Speed Bad

62/100

koncon.nl Mobile Speed Test Quick Summary

priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

https://www.koncon.nl/css/styles.css?rev=85bd5d970…5db5e6b6a0afb1655885c4

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 100.4KiB (26% reduction).

Compressing https://www.koncon.nl/storage/media/_wide_md/aus-L…ational-Opera-0047.jpg could save 27.3KiB (33% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/Open-…Alex-Schr%C3%B6der.jpg could save 23.7KiB (29% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/7-15-…ival-alex-schroder.jpg could save 15.2KiB (27% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/open-dag.jpg could save 12.9KiB (24% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/07-12…osjeDivertissement.jpg could save 8.7KiB (23% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/dsc_3428.jpg could save 7.4KiB (21% reduction).
Compressing https://www.koncon.nl/storage/media/_wide_md/07-05…nce-alex-schroeder.jpg could save 5.2KiB (17% reduction).

priority - 3Leverage 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:

priority - 3Reduce server response time

In our test, your server responded in 0.38 seconds.

priority - 0Enable 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 4.2KiB (72% reduction).

Compressing https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js could save 4.2KiB (72% 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 2KiB (22% reduction).

Minifying https://www.koncon.nl/ could save 2KiB (22% reduction) after compression.

priority - 0Minify 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 1.6KiB (28% reduction).

Minifying https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js could save 1.6KiB (28% reduction).

koncon.nl Mobile Resource Breakdown

Total Resources	38
Number of Hosts	8
Static Resources	34
JavaScript Resources	6
CSS Resources	1

koncon.nl mobile page usability

Last tested: 2019-07-15

Mobile Usability Good

99/100

koncon.nl Mobile Usability Test Quick Summary

priority - 0Size 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 <ellipse class="crown__dot"> and 4 others are close to other tap targets.

The tap target <button class="btn btn--prima…button--accept">Ja, ik accepteer cookies</button> is close to 1 other tap targets.

koncon.nl HTML validation

Errors

A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.

Line: 41 Column: 1 - 69
"... SEO --> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta..."

Attribute “@click” not allowed on element “div” at this point.

Line: 272 Column: 9 - 93
"...> <div id="app" @click="showModal = false" :class="{'modal-open': showModal === true}"> ..."

Attribute “:class” not allowed on element “div” at this point.

Line: 272 Column: 9 - 93
"...> <div id="app" @click="showModal = false" :class="{'modal-open': showModal === true}"> ..."

Element “crown” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 292 Column: 17 - 9
"... <crown class="crown--default" variant="small" min-lines="1" max-lines="10" fade-in-dots="true" animate-trigger="load" animate-delay="4500" ></crow..." Line: 1017 Column: 21 - 91
"... <crown fade-in-dots="true" animate-trigger="click" enable-outro="true"></crow..."

Element “notifier” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 302 Column: 37 - 74
"... <notifier class="hidden-xs hidden-sm"></noti..."

Attribute “@touchstart” not allowed on element “a” at this point.

Line: 1043 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/piz-amalia-music-festival-in-zwitserland" class="link--clean" @touchstart="showTooltip({"title":"Piz Amalia Music Festival in Zwitserland","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/piz-amalia-music-festival-in-zwitserland","class":""})" @mouseenter="showTooltip({"title":"Piz Amalia Music Festival in Zwitserland","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/piz-amalia-music-festival-in-zwitserland","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1076 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/nino-gvetadze-alumna-krijgt-vijf-sterren-van-de-volkskrant" class="link--clean" @touchstart="showTooltip({"title":"Nino Gvetadze (alumna) krijgt vijf sterren van de Volkskrant","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/nino-gvetadze-alumna-krijgt-vijf-sterren-van-de-volkskrant","class":""})" @mouseenter="showTooltip({"title":"Nino Gvetadze (alumna) krijgt vijf sterren van de Volkskrant","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/nino-gvetadze-alumna-krijgt-vijf-sterren-van-de-volkskrant","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1109 Column: - 5
"... <a href="https://www.koncon.nl/agenda/workshop-gospel-by-bazil-meade" class="link--clean" @touchstart="showTooltip({"title":"Workshop Gospel by Bazil Meade","meta":"Evenement (4 oktober)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/workshop-gospel-by-bazil-meade","class":""})" @mouseenter="showTooltip({"title":"Workshop Gospel by Bazil Meade","meta":"Evenement (4 oktober)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/workshop-gospel-by-bazil-meade","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1142 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/save-the-date-ton-koopman-academy-2020" class="link--clean" @touchstart="showTooltip({"title":"Save the date: Ton Koopman Academy 2020","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/save-the-date-ton-koopman-academy-2020","class":""})" @mouseenter="showTooltip({"title":"Save the date: Ton Koopman Academy 2020","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/save-the-date-ton-koopman-academy-2020","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1175 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/ecmaster-in-the-strad" class="link--clean" @touchstart="showTooltip({"title":"ECMAster in The Strad - A European chamber music coaching initiative","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ecmaster-in-the-strad","class":""})" @mouseenter="showTooltip({"title":"ECMAster in The Strad - A European chamber music coaching initiative","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ecmaster-in-the-strad","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1208 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/ryan-bancroft-benoemd-tot-chefdirigent-bbc-national-orchestra-of-wales" class="link--clean" @touchstart="showTooltip({"title":"Ryan Bancroft benoemd tot chefdirigent BBC National Orchestra of Wales","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ryan-bancroft-benoemd-tot-chefdirigent-bbc-national-orchestra-of-wales","class":""})" @mouseenter="showTooltip({"title":"Ryan Bancroft benoemd tot chefdirigent BBC National Orchestra of Wales","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ryan-bancroft-benoemd-tot-chefdirigent-bbc-national-orchestra-of-wales","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1241 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/troonrede-a-one-minute-symphony-by-maarten-bauer" class="link--clean" @touchstart="showTooltip({"title":"Troonrede \u2013 A \u2018One Minute Symphony\u2019 by Maarten Bauer","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/troonrede-a-one-minute-symphony-by-maarten-bauer","class":""})" @mouseenter="showTooltip({"title":"Troonrede \u2013 A \u2018One Minute Symphony\u2019 by Maarten Bauer","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/troonrede-a-one-minute-symphony-by-maarten-bauer","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1274 Column: - 5
"... <a href="https://www.koncon.nl/agenda/meer-muziek-in-de-klas-workshops" class="link--clean" @touchstart="showTooltip({"title":"M\u00e9\u00e9r Muziek In de Klas: Workshops +","meta":"Evenement (9 november)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/meer-muziek-in-de-klas-workshops","class":""})" @mouseenter="showTooltip({"title":"M\u00e9\u00e9r Muziek In de Klas: Workshops +","meta":"Evenement (9 november)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/meer-muziek-in-de-klas-workshops","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1307 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/vigo-violanet-festival-1" class="link--clean" @touchstart="showTooltip({"title":"Vigo Violanet Festival","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/vigo-violanet-festival-1","class":""})" @mouseenter="showTooltip({"title":"Vigo Violanet Festival","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/vigo-violanet-festival-1","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1340 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/the-annual-meeting-for-international-relations-coordinators-2019" class="link--clean" @touchstart="showTooltip({"title":"\u200bThe Annual Meeting for International Relations Coordinators 2019","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/the-annual-meeting-for-international-relations-coordinators-2019","class":""})" @mouseenter="showTooltip({"title":"\u200bThe Annual Meeting for International Relations Coordinators 2019","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/the-annual-meeting-for-international-relations-coordinators-2019","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1373 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/ensemble-in-residence-2019-2020-cuarteto-casals" class="link--clean" @touchstart="showTooltip({"title":"Ensemble in Residence 2019\/2020: Cuarteto Casals","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ensemble-in-residence-2019-2020-cuarteto-casals","class":""})" @mouseenter="showTooltip({"title":"Ensemble in Residence 2019\/2020: Cuarteto Casals","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/ensemble-in-residence-2019-2020-cuarteto-casals","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1406 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/entrepreneurial-bootcamp-a-musicians-footprint" class="link--clean" @touchstart="showTooltip({"title":"Entrepreneurial Bootcamp: A musician\u2019s footprint","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/entrepreneurial-bootcamp-a-musicians-footprint","class":""})" @mouseenter="showTooltip({"title":"Entrepreneurial Bootcamp: A musician\u2019s footprint","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/entrepreneurial-bootcamp-a-musicians-footprint","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1439 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/start-of-the-young-talent-project" class="link--clean" @touchstart="showTooltip({"title":"Young Talent Project van start","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/start-of-the-young-talent-project","class":""})" @mouseenter="showTooltip({"title":"Young Talent Project van start","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/start-of-the-young-talent-project","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1472 Column: - 5
"... <a href="https://www.koncon.nl/agenda/open-dag-dansvakopleiding" class="link--clean" @touchstart="showTooltip({"title":"Open Dag Dansvakopleiding","meta":"Evenement (12 oktober)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/open-dag-dansvakopleiding","class":""})" @mouseenter="showTooltip({"title":"Open Dag Dansvakopleiding","meta":"Evenement (12 oktober)","colorPalette":"0","url":"https:\/\/www.koncon.nl\/agenda\/open-dag-dansvakopleiding","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1505 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/diversity-and-inclusion-in-the-conservatoire" class="link--clean" @touchstart="showTooltip({"title":"Diversity and inclusion in the conservatoire","meta":"Nieuws","colorPalette":"8","url":"https:\/\/www.koncon.nl\/nieuws\/diversity-and-inclusion-in-the-conservatoire","class":""})" @mouseenter="showTooltip({"title":"Diversity and inclusion in the conservatoire","meta":"Nieuws","colorPalette":"8","url":"https:\/\/www.koncon.nl\/nieuws\/diversity-and-inclusion-in-the-conservatoire","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..." Line: 1538 Column: - 5
"... <a href="https://www.koncon.nl/nieuws/gaudeamus-festival-2019" class="link--clean" @touchstart="showTooltip({"title":"Gaudeamus Festival 2019","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/gaudeamus-festival-2019","class":""})" @mouseenter="showTooltip({"title":"Gaudeamus Festival 2019","meta":"Nieuws","colorPalette":"0","url":"https:\/\/www.koncon.nl\/nieuws\/gaudeamus-festival-2019","class":""})" @touchend="hideTooltip" @mouseleave="hideTooltip" > ..."

Attribute “@mouseenter” not allowed on element “a” at this point.

Attribute “@touchend” not allowed on element “a” at this point.

Attribute “@mouseleave” not allowed on element “a” at this point.

Attribute “alt” not allowed on element “noscript” at this point.

Line: 1049 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/48771013843_f5b293374f_o-1.jpg" alt="" width="600" height="400" > ..." Line: 1082 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/nino-gvetadze.jpg" alt="" width="600" height="400" > ..." Line: 1115 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/Community-Gospel-Choir.PNG" alt="" width="600" height="742" > ..." Line: 1148 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/dsc_7039.jpg" alt="" width="600" height="429" > ..." Line: 1181 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/27-Oktober-Kamermuziekensembles-Ecma-Pag20.jpg" alt="" width="600" height="400" > ..." Line: 1214 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/Ryan-Bancroft.jpg" alt="" width="600" height="400" > ..." Line: 1247 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/koning-koningin-troonrede-prinsjesdag-2019.jpg" alt="" width="600" height="400" > ..." Line: 1280 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/Logo-MMIK-Workshops-plus.png" alt="" width="600" height="600" > ..." Line: 1313 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/violanet.jpg" alt="" width="600" height="453" > ..." Line: 1346 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/annual-meeting.png" alt="" width="600" height="228" > ..." Line: 1379 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/0KPU_03_molina_visuals.jpg" alt="" width="600" height="577" > ..." Line: 1412 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/mijn-buuf.jpg" alt="" width="600" height="450" > ..." Line: 1445 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/2018_NDT-YTP_SOCIAL-MEDIA-©sacha-grootjans.jpg" alt="" width="600" height="900" > ..." Line: 1478 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/018-5-werelddanssamoa-anneofman.jpg" alt="" width="600" height="400" > ..." Line: 1511 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/the-domains_mosaic_diversity-action-plan_kc_2018.jpg" alt="" width="600" height="463" > ..." Line: 1544 Column: - 5
"... <noscript data-src="https://www.koncon.nl/storage/media/_wide_md/Gaudeamus.jpg" alt="" width="600" height="399" > ..."

Attribute “width” not allowed on element “noscript” at this point.

Attribute “height” not allowed on element “noscript” at this point.

Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Element “modal” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 1697 Column: 9 - 75
"... <modal :url="modalUrl" v-if="showModal" @close="showModal = false"></moda..."

Element “previewer” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 1703 Column: 21 - 13
"... <previewer v-if="previewer.show" @close="previewer.show = false" :data="previewer.data" :color-palette="'8'" ></prev..."

Element “tooltip” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 1705 Column: 9 - 58
"... <tooltip :data="tooltip.data" v-if="tooltip.show"></tool..."

Warnings

The “type” attribute is unnecessary for JavaScript resources.

Line: 260 Column: 5 - 112
"...ipt> <script type="text/javascript" src="https://rlb.nuffic.nl/assets/javascripts/webwidgets/nrlb-webwidgets.js"></scri..." Line: 262 Column: 9 - 141
"... <script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB_qEkZHz_6ok3IZsjCSI-8ZfmNwh7biq0" type="text/javascript"></scri..."

Attribute “@click” is not serializable as XML 1.0.

Line: 272 Column: 9 - 93
"...> <div id="app" @click="showModal = false" :class="{'modal-open': showModal === true}"> ..."

Attribute “:class” is not serializable as XML 1.0.

Line: 272 Column: 9 - 93
"...> <div id="app" @click="showModal = false" :class="{'modal-open': showModal === true}"> ..."

The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.

Line: 273 Column: 9 - 31
"...> <a id="top" name="top"></a> ..." Line: 1024 Column: 13 - 43
"... <a id="content" name="content"></a> ..."

The “main” role is unnecessary for element “main”.

Line: 1023 Column: 9 - 70
"... <main class="template__content-wrapper" data-mark role="main"> ..."

Attribute “@touchstart” is not serializable as XML 1.0.

Attribute “@mouseenter” is not serializable as XML 1.0.

Attribute “@touchend” is not serializable as XML 1.0.

Attribute “@mouseleave” is not serializable as XML 1.0.

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 1686 Column: 17 - 54
"... <section class="page-footer__section"> ..."

Attribute “:url” is not serializable as XML 1.0.

Line: 1697 Column: 9 - 75
"... <modal :url="modalUrl" v-if="showModal" @close="showModal = false"></moda..."

Attribute “@close” is not serializable as XML 1.0.

Line: 1697 Column: 9 - 75
"... <modal :url="modalUrl" v-if="showModal" @close="showModal = false"></moda..." Line: 1703 Column: 21 - 13
"... <previewer v-if="previewer.show" @close="previewer.show = false" :data="previewer.data" :color-palette="'8'" ></prev..."

Attribute “:data” is not serializable as XML 1.0.

Line: 1703 Column: 21 - 13
"... <previewer v-if="previewer.show" @close="previewer.show = false" :data="previewer.data" :color-palette="'8'" ></prev..." Line: 1705 Column: 9 - 58
"... <tooltip :data="tooltip.data" v-if="tooltip.show"></tool..."

Attribute “:color-palette” is not serializable as XML 1.0.

Line: 1703 Column: 21 - 13
"... <previewer v-if="previewer.show" @close="previewer.show = false" :data="previewer.data" :color-palette="'8'" ></prev..."

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koncon.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.

koncon.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.

KONCON.NL Home | Koninklijk Conservatorium Den Haag

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Servers Location

koncon.nl desktop page speed rank

koncon.nl Desktop Speed Test Quick Summary

priority - 12Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 119.2KiB (24% reduction).

priority - 12Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 2Leverage 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:

priority - 2Reduce server response time

In our test, your server responded in 0.38 seconds.

priority - 0Enable 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 4.2KiB (72% 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 2.1KiB (22% reduction).

priority - 0Minify 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 1.6KiB (28% reduction).

koncon.nl Desktop Resource Breakdown

koncon.nl mobile page speed rank

koncon.nl Mobile Speed Test Quick Summary

priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 10Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 100.4KiB (26% reduction).

priority - 3Leverage 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:

priority - 3Reduce server response time

In our test, your server responded in 0.38 seconds.

priority - 0Enable 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 4.2KiB (72% 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 2KiB (22% reduction).

priority - 0Minify 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 1.6KiB (28% reduction).

koncon.nl Mobile Resource Breakdown

koncon.nl mobile page usability

koncon.nl Mobile Usability Test Quick Summary

priority - 0Size 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.

koncon.nl HTML validation

Errors

A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.

Attribute “@click” not allowed on element “div” at this point.

Attribute “:class” not allowed on element “div” at this point.

Element “crown” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Element “notifier” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Attribute “@touchstart” not allowed on element “a” at this point.

Attribute “@mouseenter” not allowed on element “a” at this point.

Attribute “@touchend” not allowed on element “a” at this point.

Attribute “@mouseleave” not allowed on element “a” at this point.

Attribute “alt” not allowed on element “noscript” at this point.

Attribute “width” not allowed on element “noscript” at this point.

Attribute “height” not allowed on element “noscript” at this point.

Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Element “modal” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Element “previewer” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Element “tooltip” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Warnings

The “type” attribute is unnecessary for JavaScript resources.