wissen.de Website Information

Daily Unique Visits: 57,371

Daily Page Views: 344,226

Income Per Day: $688

Estimated Value: $495,360

This website is located in Germany and is using following IP address 165.227.156.108. See the complete list of popular websites hosted in Germany.

wissen.de is registered under .DE top-level domain. Please check other sites in .DE zone.

Website wissen.de is using the following name servers:

deniol2411.arvato-systems-media.net
deniol2333.nionex.net
deniol2463.s4m-operating-prod.aws.arvato-systems-media.net

and is probably hosted by FASTLY - Fastly, US. See the full list of other websites hosted by FASTLY - Fastly, US.

The highest website wissen.de position in Alexa rank database was 24394 and the lowest rank position was 25269. Current position of wissen.de in Alexa rank database is 24999.

Desktop speed score of wissen.de (73/100) is better than the results of 56.16% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of wissen.de (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 wissen.de (32/100) is better than the results of 11.35% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

wissen.de 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.

wissen.de 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: wissen.de
Status: connect

wissen.de server information

Servers Location

wissen.de desktop page speed rank

Last tested: 2019-12-08

Desktop Speed Medium

73/100

wissen.de Desktop Speed Test Quick Summary

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priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 1Reduce server response time

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wissen.de Desktop Resource Breakdown

Total Resources	241
Number of Hosts	83
Static Resources	112
JavaScript Resources	84
CSS Resources	4

wissen.de mobile page speed rank

Last tested: 2017-05-31

Mobile Speed Bad

32/100

wissen.de Mobile Speed Test Quick Summary

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priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

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priority - 33Optimize images

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priority - 18Leverage browser caching

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http://cdn.conative.de/artifacts-v2/5c9dda753c0848…650767/adscript.min.js (expiration not specified)
https://www.twiago.com/scripts/konradin/tw_perffooter.js (expiration not specified)
https://www.twiago.com/scripts/konradin/tw_slide.css (expiration not specified)
https://www.twiago.com/scripts/konradin/tw_slide.js (expiration not specified)
http://dmp.theadex.com/d/173/249/s/adex.js?ts=95002596 (5 minutes)
http://dmp.theadex.com/d/607/2256/s/adex.js (5 minutes)
http://cdn.xplosion.de/adp/0.0.47/adpIntegration.min.js (12.4 minutes)
http://cdn.xplosion.de/adp/adpprofilingcontainer.min.js (17.8 minutes)
http://connect.facebook.net/de_DE/sdk.js (20 minutes)
http://connect.facebook.net/en_US/fp.js (20 minutes)
http://cdn.xplosion.de/adp/69511/adp_loader.js (26.7 minutes)
http://cdn.conative.de/serve/domain/364/config.js (30 minutes)
http://js.adscale.de/map.js (60 minutes)
http://js.adscale.de/match.js (60 minutes)
http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js (60 minutes)
https://ipw.getsurance.de/bundle.9079b22c.css (60 minutes)
https://ipw.getsurance.de/bundle.js?5bad3aa8 (60 minutes)
https://ipw.getsurance.de/embed.js (60 minutes)
https://ipw.getsurance.de/media/fontawesome-webfont.af7ae505.woff2 (60 minutes)
https://ipw.getsurance.de/media/logo@2x.2a7494ab.png (60 minutes)
https://ipw.getsurance.de/media/symantec.6e63946d.png (60 minutes)
https://pagead2.googlesyndication.com/pagead/osd.js (60 minutes)
http://script.ioam.de/iam.js (2 hours)
http://www.google-analytics.com/ga.js (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)
http://cdn.stroeerdigitalgroup.de/metatag/libraries/postscribe.min.js (11.2 hours)

priority - 11Minify 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 107.9KiB (51% reduction).

Minifying http://www.wissen.de/sites/all/themes/wissen/js/modernizr.js could save 33.9KiB (67% reduction).
Minifying http://www.wissen.de/misc/ajax.js?v=7.39 could save 14.4KiB (58% reduction).
Minifying http://www.wissen.de/misc/drupal.js?oqswk1 could save 11KiB (67% reduction).
Minifying http://www.wissen.de/sites/all/themes/wissen/js/fo…n/foundation.js?oqswk1 could save 10.4KiB (49% reduction).
Minifying http://www.wissen.de/sites/all/themes/wissen/js/page.js?oqswk1 could save 10.3KiB (40% reduction).
Minifying http://www.wissen.de/sites/all/themes/wissen/js/fo…ation.reveal.js?oqswk1 could save 6KiB (39% reduction).
Minifying http://www.wissen.de/misc/autocomplete.js?v=7.39 could save 3.3KiB (40% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wiss…_ads_adblock.js?oqswk1 could save 2.6KiB (66% reduction).
Minifying http://www.wissen.de/misc/jquery.once.js?v=1.2 could save 2.5KiB (84% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wissen_media/media.js?oqswk1 could save 1.6KiB (50% reduction).
Minifying http://www.wissen.de/misc/progress.js?v=7.39 could save 1.4KiB (48% reduction).
Minifying http://www.wissen.de/misc/form.js?v=7.39 could save 1.3KiB (55% reduction).
Minifying http://www.wissen.de/sites/all/themes/wissen/js/browserdetection.js?oqswk1 could save 1.2KiB (36% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wiss…autocomplete.js?oqswk1 could save 1.2KiB (48% reduction).
Minifying http://www.wissen.de/sites/all/modules/views_infin…inite_scroll.js?oqswk1 could save 1.2KiB (36% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wiss…query.cookie.js?oqswk1 could save 1,012B (52% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wiss…_ajax_errors.js?oqswk1 could save 978B (44% reduction).
Minifying http://www.wissen.de/sites/all/libraries/autopager…opager-1.0.0.js?oqswk1 could save 853B (25% reduction).
Minifying http://www.wissen.de/sites/all/modules/rate/rate.js?oqswk1 could save 819B (38% reduction).
Minifying http://www.wissen.de/sites/all/modules/wissen/wiss…/wissen_quiz.js?oqswk1 could save 790B (19% reduction).
Minifying http://script.ioam.de/iam.js could save 714B (12% reduction) after compression.
Minifying http://connect.facebook.net/en_US/fp.js could save 675B (51% reduction) after compression.

wissen.de Mobile Resource Breakdown

Total Resources	240
Number of Hosts	61
Static Resources	150
JavaScript Resources	101
CSS Resources	10

wissen.de mobile page usability

Last tested: 2017-05-31

Mobile Usability Good

99/100

wissen.de 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 <a href="/aclk?sa=l&ai=…ms%253D9032152" class="rhtitle rhdefaultcolored">Detour</a> is close to 1 other tap targets.
The tap target <span class="rhprice rhdefaultcolored">Kostenlos</span> is close to 1 other tap targets.
The tap target <span class="rhpromotext rhdefaultcolored">Narrated By Locals.</span> is close to 1 other tap targets.
The tap target <a href="http://www.wis…de/wissenstest">Wissenstest</a> and 5 others are close to other tap targets.
The tap target <a href="/lexikonsuche/ddwg/all">Daten der Weltgeschichte A-Z</a> and 7 others are close to other tap targets.
The tap target <a href="/leben-lifestyle">Leben & Lifestyle</a> and 1 others are close to other tap targets.
The tap target <a href="http://www.t-o…56770518/index">Nutzungsbasier…Online-Werbung</a> and 7 others are close to other tap targets.

wissen.de HTML validation

Errors

Attribute “xmlns:content” not allowed here.

Line: 11 Column: 16 - 48
"...TYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="de" dir="ltr" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:og="http://ogp.me/ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:sioc="http://rdfs.org/sioc/ns#" xmlns:sioct="http://rdfs.org/sioc/types#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#"> <!--..."

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

Line: 258 Column: 15 - 268
"... <iframe src="//www.facebook.com/plugins/like.php?href=https%3A%2F%2Fwww.facebook.com%2Fwissen.de&width&layout=button_count&action=like&show_faces=false&share=true&height=21" scrolling="no" frameborder="0" allowtransparency="true"></ifra..."

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

Bad value “https://adserver.adtech.de/adlink|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “href” on element “a”: Illegal character in path segment: “|” is not allowed.

Line: 561 Column: 199 - 328
"...<noscript><a href="https://adserver.adtech.de/adlink|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" target="_blank"><img s..."

Bad value “https://adserver.adtech.de/adserv|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “src” on element “img”: Illegal character in path segment: “|” is not allowed.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 561 Column: 329 - 481
"...="_blank"><img src="https://adserver.adtech.de/adserv|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" border="0" width="300" height="250" /></a></..." Line: 621 Column: 171 - 289
"... none;"><img src="https://www.wissenschaft-shop.de/out/pictures/generated/product/1/185_150_100/804440_nasa_hb_archiv(2).jpg"/></a> ..." Line: 696 Column: 329 - 481
"...="_blank"><img src="https://adserver.adtech.de/adserv|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" border="0" width="300" height="250" /></a></..."

Bad value “https://a.twiago.com/adscript.php?pid=3963&ord=[timestamp]” for attribute “src” on element “script”: Illegal character in query: “[” is not allowed.

Line: 650 Column: 5 - 101
"...ent"> <script src="https://a.twiago.com/adscript.php?pid=3963&ord=[timestamp]" type="text/javascript"></scrip..."

Bad value “https://a.twiago.com/adnoclick.php?pid=3963&ord=[timestamp]” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.

Line: 650 Column: 121 - 205
"...noscript><a href="https://a.twiago.com/adnoclick.php?pid=3963&ord=[timestamp]" target="_top"><img src..."

Bad value “https://a.twiago.com/adnoscript.php?pid=3963&ord=[timestamp]” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.

Line: 650 Column: 206 - 336
"...="_top"><img src="https://a.twiago.com/adnoscript.php?pid=3963&ord=[timestamp]" alt="Hier klicken!" border="0" width="300" height="250" /></a></nos..."

No space between attributes.

Line: 674 Column: - 270
"...e-cover="false""><blockquote c..."

Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.

Line: 674 Column: - 270
"...e-cover="false""><blockquote c..."

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

Line: 674 Column: 6 - 271
"... <div class="fb-page" data-href="https://www.facebook.com/wissen.de" data-adapt-container-width="true" data-width="304" data-height="257" data-show-facepile="true" data-border-color="transparent" data-stream="false" data-small-header="false" data-hide-cover="false""><block..."

Bad value “https://adserver.adtech.de/adlink|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “href” on element “a”: Illegal character in path segment: “|” is not allowed.

Line: 696 Column: 199 - 328
"...<noscript><a href="https://adserver.adtech.de/adlink|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" target="_blank"><img s..."

Bad value “https://adserver.adtech.de/adserv|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “src” on element “img”: Illegal character in path segment: “|” is not allowed.

Line: 696 Column: 329 - 481
"...="_blank"><img src="https://adserver.adtech.de/adserv|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" border="0" width="300" height="250" /></a></..."

Bad value “https://a.twiago.com/adscript.php?pid=3171&ord=[timestamp]” for attribute “src” on element “script”: Illegal character in query: “[” is not allowed.

Line: 913 Column: 5 - 101
"...ent"> <script src="https://a.twiago.com/adscript.php?pid=3171&ord=[timestamp]" type="text/javascript"></scrip..."

Bad value “https://a.twiago.com/adnoclick.php?pid=3171&ord=[timestamp]” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.

Line: 913 Column: 121 - 205
"...noscript><a href="https://a.twiago.com/adnoclick.php?pid=3171&ord=[timestamp]" target="_top"><img src..."

Bad value “https://a.twiago.com/adnoscript.php?pid=3171&ord=[timestamp]” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.

Line: 913 Column: 206 - 336
"...="_top"><img src="https://a.twiago.com/adnoscript.php?pid=3171&ord=[timestamp]" alt="Hier klicken!" border="0" width="964" height="250" /></a></nos..."

Warnings

Attribute with the local name “xmlns:content” is not serializable as XML 1.0.

Attribute with the local name “xmlns:dc” is not serializable as XML 1.0.

Attribute with the local name “xmlns:foaf” is not serializable as XML 1.0.

Attribute with the local name “xmlns:og” is not serializable as XML 1.0.

Attribute with the local name “xmlns:rdfs” is not serializable as XML 1.0.

Attribute with the local name “xmlns:sioc” is not serializable as XML 1.0.

Attribute with the local name “xmlns:sioct” is not serializable as XML 1.0.

Attribute with the local name “xmlns:skos” is not serializable as XML 1.0.

Attribute with the local name “xmlns:xsd” is not serializable as XML 1.0.

Consider avoiding viewport values that prevent users from resizing documents.

Line: 24 Column: 3 - 92
"...94150"> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no" /> <!..."

The “type” attribute for the “style” element is not needed and should be omitted.

Line: 39 Column: 1 - 35
"...="all" /> <style type="text/css" media="all"> /* <!..."

The “type” attribute is unnecessary for JavaScript resources.

Line: 48 Column: 3 - 226
"...all" /> <script type="text/javascript" src="//www.wissen.de/sites/default/files/advagg_js/js__O-jWuyDDBPigb6yt4viqNt_bBUNn_dmKt7J_hIfMziY__Fi2k4rQXi1JWFsneTseObdwJ5h0IRoyfKtpzXSSKDb4__JGLNMyUcLXn9T_j20GL6eoz1dkU2oQWwWbvzca-Omxs.js"></scri..." Line: 49 Column: 1 - 105
"...</script> <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/postscribe/2.0.8/postscribe.min.js"></scri..." Line: 50 Column: 1 - 83
"...</script> <script type="text/javascript" src="//www.twiago.com/scripts/konradin/tw_slide.js"></scri..." Line: 51 Column: 1 - 61
"...</script> <script type="text/javascript" src="//script.ioam.de/iam.js"></scri..." Line: 52 Column: 1 - 82
"...</script> <script type="text/javascript" src="//cdn.conative.de/serve/domain/364/config.js"></scri..." Line: 53 Column: 1 - 224
"...</script> <script type="text/javascript" src="//www.wissen.de/sites/default/files/advagg_js/js__um_i76MNsOHyEUq64VuT-OGBpTv6xjnIPuApgQg98w0__6yvc7kcizWreF25mgmpfgG6_tw9Q-PB-5dXnw4A-KZE__JGLNMyUcLXn9T_j20GL6eoz1dkU2oQWwWbvzca-Omxs.js"></scri..." Line: 54 Column: 1 - 103
"...</script> <script type="text/javascript" src="//cdn.interactivemedia.net/live/wissen.de/live/globalAdTag.min.js"></scri..." Line: 55 Column: 1 - 31
"...</script> <script type="text/javascript">  <script type="text/javascript"> ..." Line: 130 Column: 1 - 31
"...</div>--> <script type="text/javascript"> v..." Line: 207 Column: 7 - 37
"...p"> <script type="text/javascript"> ..." Line: 218 Column: 7 - 37
"...e"> <script type="text/javascript"> ..." Line: 235 Column: 7 - 37
"...p"> <script type="text/javascript"> ..." Line: 321 Column: 7 - 37
"...p"> <script type="text/javascript"> ..." Line: 553 Column: 7 - 37
"...p"> <script type="text/javascript"> ..." Line: 650 Column: 5 - 101
"...ent"> <script src="https://a.twiago.com/adscript.php?pid=3963&ord=[timestamp]" type="text/javascript"></scrip..." Line: 665 Column: 5 - 35
".../div> <script type="text/javascript"> (..." Line: 898 Column: 5 - 35
"...></a> <script type="text/javascript"> ..." Line: 913 Column: 5 - 101
"...ent"> <script src="https://a.twiago.com/adscript.php?pid=3171&ord=[timestamp]" type="text/javascript"></scrip..." Line: 1036 Column: 7 - 37
"...e"> <script type="text/javascript"> ..." Line: 1047 Column: 7 - 37
"...t"> <script type="text/javascript"> ..." Line: 1058 Column: 7 - 37
"...e"> <script type="text/javascript"> ..." Line: 1068 Column: 36 - 66
"...p;</div> <script type="text/javascript"> <!--/..." Line: 1073 Column: 1 - 31
"...</script> <script type="text/javascript"> <!--/..." Line: 1078 Column: 1 - 224
"...</script> <script type="text/javascript" src="//www.wissen.de/sites/default/files/advagg_js/js__v_4yJHVtE6RUu6yqhWqVJhN8cT82FDxs_Va_i0KPQGA__Zz3Wr35U3o6XmTnZsnxUaeuftbjlMppkPkYNH9P-hNA__JGLNMyUcLXn9T_j20GL6eoz1dkU2oQWwWbvzca-Omxs.js"></scri..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 561 Column: 329 - 481
"...="_blank"><img src="https://adserver.adtech.de/adserv|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" border="0" width="300" height="250" /></a></..." Line: 650 Column: 206 - 336
"...="_top"><img src="https://a.twiago.com/adnoscript.php?pid=3963&ord=[timestamp]" alt="Hier klicken!" border="0" width="300" height="250" /></a></nos..." Line: 696 Column: 329 - 481
"...="_blank"><img src="https://adserver.adtech.de/adserv|3.0|704.1|6594684|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=" border="0" width="300" height="250" /></a></..." Line: 913 Column: 206 - 336
"...="_top"><img src="https://a.twiago.com/adnoscript.php?pid=3171&ord=[timestamp]" alt="Hier klicken!" border="0" width="964" height="250" /></a></nos..."

Attribute “"” is not serializable as XML 1.0.

This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.

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wissen.de 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.

wissen.de 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.

WISSEN.DE Allgemeinbildung | Wissenstest | Lexikon | Wörterbücher | Suche | wissen.de

wissen.de Website Information

Advertisement

wissen.de Alexa Rank

wissen.de whois

wissen.de server information

Servers Location

wissen.de desktop page speed rank

wissen.de Desktop Speed Test Quick Summary

priority - 11Leverage 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 - 9Enable 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 86.4KiB (73% reduction).

priority - 7Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 3Optimize images

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

Optimize the following images to reduce their size by 32.2KiB (23% reduction).

priority - 3Minify 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 26.1KiB (18% reduction).

priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

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

Optimize CSS Delivery of the following:

priority - 1Reduce server response time

In our test, your server responded in 0.29 seconds.

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 (28% reduction).

wissen.de Desktop Resource Breakdown

wissen.de mobile page speed rank

wissen.de Mobile Speed Test Quick Summary

priority - 126Enable 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 1.2MiB (62% reduction).

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 41 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 33Optimize images

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

Optimize the following images to reduce their size by 314KiB (67% reduction).

priority - 18Leverage 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 - 11Minify 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 107.9KiB (51% reduction).

wissen.de Mobile Resource Breakdown

wissen.de mobile page usability

wissen.de 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.

wissen.de HTML validation

Errors

Attribute “xmlns:content” not allowed here.

Attribute “xmlns:dc” not allowed here.

Attribute “xmlns:foaf” not allowed here.

Attribute “xmlns:og” not allowed here.

Attribute “xmlns:rdfs” not allowed here.

Attribute “xmlns:sioc” not allowed here.

Attribute “xmlns:sioct” not allowed here.

Attribute “xmlns:skos” not allowed here.

Attribute “xmlns:xsd” not allowed here.

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.

Bad value “https://adserver.adtech.de/adlink|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “href” on element “a”: Illegal character in path segment: “|” is not allowed.

Bad value “https://adserver.adtech.de/adserv|3.0|704.1|6594674|0|170|ADTECH;loc=300;key=key1+key2+key3+key4;alias=” for attribute “src” on element “img”: Illegal character in path segment: “|” is not allowed.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Bad value “https://a.twiago.com/adscript.php?pid=3963&ord=[timestamp]” for attribute “src” on element “script”: Illegal character in query: “[” is not allowed.

Bad value “https://a.twiago.com/adnoclick.php?pid=3963&ord=[timestamp]” for attribute “href” on element “a”: Illegal character in query: “[” is not allowed.

Bad value “https://a.twiago.com/adnoscript.php?pid=3963&ord=[timestamp]” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.

No space between attributes.

Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.