biolib.cz Website Information

Daily Unique Visits: 21,065

Daily Page Views: 126,390

Income Per Day: $253

Estimated Value: $182,160

This website is located in Czech Republic and is using following IP address 185.4.203.23. See the complete list of popular websites hosted in Czech Republic.

biolib.cz is registered under .CZ top-level domain. Please check other sites in .CZ zone.

Website biolib.cz is using the following name servers:

ns.mudrc.net
ns2.mudrc.net

and is probably hosted by Sys-DataCom s.r.o.. See the full list of other websites hosted by Sys-DataCom s.r.o..

The highest website biolib.cz position in Alexa rank database was 15762 and the lowest rank position was 995684. Current position of biolib.cz in Alexa rank database is 68085.

Desktop speed score of biolib.cz (88/100) is better than the results of 85.98% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of biolib.cz (62/100) is better than the results of 7.29% of other sites and means that the page is not mobile-friendly.

Mobile speed score of biolib.cz (73/100) is better than the results of 81.47% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

biolib.cz 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.

biolib.cz 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.

% (c) 2006-2021 CZ.NIC, z.s.p.o.
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.15.0
% Timestamp: Fri Sep 27 07:17:17 2024

domain: biolib.cz
registrant: SB:JH5030-RIPE_XX
admin-c: JH5030-RIPE
nsset: SADA01
registrar: REG-WEBGLOBE
registered: 19.09.2002 20:46:00
changed: 27.10.2008 10:40:14
expire: 19.09.2025

contact: SB:JH5030-RIPE_XX
org: Jaroslav Hrb
name: Jaroslav Hrb
address: Radomska 469
address: Praha 8
address: 181 00
address: CZ
registrar: REG-WEBGLOBE
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00

contact: JH5030-RIPE
name: Jaroslav Hrb
address: CZ
registrar: REG-CZNIC
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00

nsset: SADA01
nserver: ns.mudrc.net
nserver: ns2.mudrc.net
tech-c: MSPRONGL
tech-c: JH5030-RIPE
registrar: REG-WEBGLOBE
created: 27.10.2008 10:28:20

contact: MSPRONGL
name: Miroslav Šprongl
address: Tenisová 952/12
address: Praha 10 - Hostivař
address: 102 00
address: CZ
registrar: REG-WEBGLOBE
created: 01.07.2004 01:45:00
changed: 15.05.2018 21:32:00

biolib.cz server information

Servers Location

biolib.cz desktop page speed rank

Last tested: 2016-12-08

Desktop Speed Good

88/100

biolib.cz Desktop Speed Test Quick Summary

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.biolib.cz/JS/scripts.min.js?v=0.943
http://code.jquery.com/jquery-1.11.2.min.js

Optimize CSS Delivery of the following:

http://www.biolib.cz/style2.css?v=0.98

priority - 2Enable 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 22.2KiB (75% reduction).

Compressing http://www.biolib.cz/style2.css?v=0.98 could save 14.8KiB (77% reduction).
Compressing http://www.biolib.cz/JS/scripts.min.js?v=0.943 could save 7.4KiB (71% reduction).

priority - 0Optimize images

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Compressing http://www.biolib.cz/IMG/VAR/maprybycr2.gif could save 1.5KiB (32% reduction).
Compressing http://www.biolib.cz/IMG/ico-social.png could save 1.1KiB (46% reduction).

priority - 0Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://www.google-analytics.com/analytics.js (2 hours)

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 3.3KiB (18% reduction).

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biolib.cz Desktop Resource Breakdown

Total Resources	30
Number of Hosts	5
Static Resources	26
JavaScript Resources	3
CSS Resources	2

biolib.cz mobile page speed rank

Last tested: 2017-05-25

Mobile Speed Medium

73/100

biolib.cz Mobile Speed Test Quick Summary

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://www.biolib.cz/JS/scripts.min.js?v=0.945
http://code.jquery.com/jquery-1.11.2.min.js

Optimize CSS Delivery of the following:

http://www.biolib.cz/style2.css?v=0.98

priority - 2Enable 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 20.8KiB (75% reduction).

Compressing http://www.biolib.cz/style2.css?v=0.98 could save 14.8KiB (77% reduction).
Compressing http://www.biolib.cz/JS/scripts.min.js?v=0.945 could save 5.9KiB (69% reduction).

priority - 1Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://www.google-analytics.com/analytics.js (2 hours)

priority - 0Optimize images

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

Optimize the following images to reduce their size by 3.6KiB (41% reduction).

Compressing http://www.biolib.cz/IMG/ico-social.png could save 1.2KiB (48% reduction).
Compressing http://www.biolib.cz/IMG/VAR/maprybycr2.gif could save 1KiB (22% reduction).
Compressing http://www.biolib.cz/IMG/FLG/ENflag.gif could save 745B (75% reduction).
Compressing http://www.biolib.cz/IMG/FLG/CZflag.gif could save 727B (80% reduction).

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 3.3KiB (18% reduction).

Minifying http://www.biolib.cz/style2.css?v=0.98 could save 3.3KiB (18% reduction).

biolib.cz Mobile Resource Breakdown

Total Resources	32
Number of Hosts	5
Static Resources	27
JavaScript Resources	3
CSS Resources	2

biolib.cz mobile page usability

Last tested: 2017-05-25

Mobile Usability Bad

62/100

biolib.cz Mobile Usability Test Quick Summary

priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

ZAČÁTEK STRÁNKY and 1 others render only 5 pixels tall (12 CSS pixels).

Zapojte se do BioLibu and 8 others render only 5 pixels tall (12 CSS pixels).

1024x768 and 1 others render only 4 pixels tall (10 CSS pixels).

| renders only 4 pixels tall (10 CSS pixels).

mapujeme na Bi…ých živočichů. and 3 others render only 5 pixels tall (12 CSS pixels).

Vedle taxonomi…ch s biologií. and 14 others render only 5 pixels tall (12 CSS pixels).

otakárka fenyklového and 5 others render only 5 pixels tall (12 CSS pixels).

podílet renders only 5 pixels tall (12 CSS pixels).

Podrobná historie změn and 6 others render only 4 pixels tall (11 CSS pixels).

| and 6 others render only 4 pixels tall (11 CSS pixels).

Upravili jsme…a na profilech and 6 others render only 5 pixels tall (12 CSS pixels).

Tipy - Nástroj…tických map ČR and 5 others render only 5 pixels tall (13 CSS pixels).

BioLib.cz – en…e podílet i vy renders only 5 pixels tall (12 CSS pixels).

Banchus pictus renders only 5 pixels tall (12 CSS pixels).

Autor: renders only 4 pixels tall (10 CSS pixels).

Josef Dvořák renders only 4 pixels tall (10 CSS pixels).

1189323 and 5 others render only 5 pixels tall (12 CSS pixels).

Přečtěte si, j…lze na BioLibu and 4 others render only 5 pixels tall (12 CSS pixels).

nově přidané obrázky and 5 others render only 5 pixels tall (12 CSS pixels).

můžete snadno…jako obrázek. and 1 others render only 4 pixels tall (11 CSS pixels).

nástroje na kr…í síťových map and 3 others render only 4 pixels tall (11 CSS pixels).

[01.05.2017 12:59:27] and 2 others render only 4 pixels tall (11 CSS pixels).

Rozšíření vyhl…profilu taxonu and 2 others render only 4 pixels tall (11 CSS pixels).

V mapování sav…op, okusu atp. and 4 others render only 4 pixels tall (11 CSS pixels).

Důležité diskuze and 2 others render only 5 pixels tall (14 CSS pixels).

Skrývání méně…a na profilech and 14 others render only 5 pixels tall (12 CSS pixels).

[ and 5 others render only 5 pixels tall (12 CSS pixels).

F and 2 others render only 5 pixels tall (12 CSS pixels).

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 10Size 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="/cz/main/"></a> and 2 others are close to other tap targets.

The tap target <a href="/cz/main/"></a> and 1 others are close to other tap targets.

The tap target <a href="/cz/formsearch/">HLEDAT</a> is close to 2 other tap targets.

The tap target <input type="submit" class="clbutton"> and 1 others are close to other tap targets.

The tap target <a href="/cz/taxon/id14772/">SYSTÉM</a> and 4 others are close to other tap targets.

The tap target <a href="/cz/main/?pagewidth=1">800x600</a> and 1 others are close to other tap targets.

The tap target <a href="/cz/taxon/id14871/" class="cllinktx">rostlin</a> and 2 others are close to other tap targets.

The tap target <a href="/cz/forumboard/id2/">Více</a> is close to 1 other tap targets.

The tap target <a href="/cz/taxon/id67646/">Banchus pictus</a> is close to 2 other tap targets.

The tap target <a href="/cz/person/id394/">Josef Dvořák</a> is close to 1 other tap targets.

The tap target <a href="/cz/formsearch/">Vyhledávat</a> and 3 others are close to other tap targets.

The tap target <a href="/cz/forumboard/id2/">Novinky</a> and 18 others are close to other tap targets.

The tap target <input type="text" name="namebox"> and 1 others are close to other tap targets.

The tap target <a id="social-fb" href="https://www.fa….com/BioLib.cz" class="social-ico">F</a> and 2 others are close to other tap targets.

The tap target <a id="social-fb" href="https://www.fa….com/BioLib.cz" class="social-ico">F</a> is close to 1 other tap targets.

priority - 5Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,002 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <input type="submit" class="clbutton"> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <div id="hp-header"> falls outside the viewport.
The element <p class="cltext">BioLib je mezi…specializací.</p> falls outside the viewport.
The element <p class="moreinfo mr10 fnt0p9">Více o BioLibu >></p> falls outside the viewport.
The element <p>Ve spolupráci…e můžete i Vy.</p> falls outside the viewport.
The element <div id="hp-map-icons"></div> falls outside the viewport.
The element <p class="moreinfo mr10 fnt0p9">Více ></p> falls outside the viewport.
The element <h3>Novinky</h3> falls outside the viewport.
The element <a href="http://vesmir.…uzete-podilet/" class="cllinkout">BioLib.cz – en…e podílet i vy</a> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <p class="moreinfo mr10 fnt0p9">Novinky >></p> falls outside the viewport.
The element <h3>Kde začít?</h3> falls outside the viewport.
The element <li>Procházet taxonomický systém</li> falls outside the viewport.
The element <li>Vyhledávat v B…a jiné taxony</li> falls outside the viewport.
The element <li>Navštívit gale…řidané obrázky</li> falls outside the viewport.
The element <li>Přečtěte si, j…ioLibu podílet</li> falls outside the viewport.
The element <h3>Tipy - Nástroj…tických map ČR</h3> falls outside the viewport.
The element <p>Pomocí nástroj…jako obrázek.</p> falls outside the viewport.
The element <p class="moreinfo mr10 fnt0p9">Více tipů >></p> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <h3>Stručné zprávy o změnách</h3> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <h4>Drobné změny v mapování</h4> falls outside the viewport.
The element <div class="cltext">V mapování sav…výskytu druhu)</div> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <h4>Komentáře k ne…rzeným taxonům</h4> falls outside the viewport.
The element <div class="cltext">U zatím nepotv…fotografiemi.</div> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.
The element <h4>Rozšíření vyhl…profilu taxonu</h4> falls outside the viewport.
The element <div class="cltext">Z profilu taxo…opicos a IPNI.</div> falls outside the viewport.
The element <p class="moreinfo mr10 fnt0p9">Nové záznamy…storie změn >></p> falls outside the viewport.
The element <div id="pagecleaner"> falls outside the viewport.
The element <a href="#screentop">ZAČÁTEK STRÁNKY</a> falls outside the viewport.
The element <div class="clean"> falls outside the viewport.

biolib.cz HTML validation

Errors

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Line: 1 Column: - 2
"...<?xml version="1..."

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Line: 2 Column: 39 - 121
"...="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html ..."

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Line: 6 Column: 1 - 51
"...UTF-8" /> <meta http-equiv="content-language" content="cs" /> <meta..."

Bad value “content-script-type” for attribute “http-equiv” on element “meta”.

Line: 7 Column: 1 - 67
"...t="cs" /> <meta http-equiv="content-script-type" content="text/javascript" /> <meta..."

Bad value “content-style-type” for attribute “http-equiv” on element “meta”.

Line: 8 Column: 1 - 59
"...cript" /> <meta http-equiv="content-style-type" content="text/css" /> <meta..."

Bad value “schema.DC” for attribute “rel” on element “link”: The string “schema.DC” is not a registered keyword.

Line: 12 Column: 1 - 64
"...hotos" /> <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/" /> <meta..."

The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.

Line: 13 Column: 1 - 59
".../1.1/" /> <meta name="DC.Subject" scheme="PHNK" content="biologie" /> <meta..." Line: 14 Column: 1 - 65
"...logie" /> <meta name="DC.Subject" scheme="PHNK" content="bioinformatika" /> <meta..." Line: 15 Column: 1 - 59
"...atika" /> <meta name="DC.Subject" scheme="PHNK" content="rostliny" /> <meta..." Line: 16 Column: 1 - 56
"...tliny" /> <meta name="DC.Subject" scheme="PHNK" content="houby" /> <meta..." Line: 17 Column: 1 - 62
"...houby" /> <meta name="DC.Subject" scheme="PHNK" content="živočichové" /> <meta..." Line: 18 Column: 1 - 59
"...chové" /> <meta name="DC.Subject" scheme="MDT_MRF" content="57/59" /> <meta..." Line: 19 Column: 1 - 61
"...57/59" /> <meta name="DC.Subject" scheme="MDT_MRF" content="575.112" /> <meta..." Line: 20 Column: 1 - 57
"...5.112" /> <meta name="DC.Subject" scheme="MDT_MRF" content="582" /> <meta..." Line: 21 Column: 1 - 66
"...="582" /> <meta name="DC.Subject" scheme="MDT_MRF" content="582.282/.284" /> <meta..." Line: 22 Column: 1 - 61
".../.284" /> <meta name="DC.Subject" scheme="MDT_MRF" content="592/599" /> <meta..." Line: 23 Column: 1 - 59
"...2/599" /> <meta name="DC.Subject" scheme="MDT_MRF" content="(031)" /> <meta..." Line: 24 Column: 1 - 73
"...(031)" /> <meta name="DC.Subject" scheme="MDT_MRF" content="(0.034.2)004.738.12" /> <meta..." Line: 25 Column: 1 - 75
"...38.12" /> <meta name="DC.Subject" scheme="MDT_KON" content="57/59-Biologické vědy" /> <meta..." Line: 26 Column: 1 - 71
"... vědy" /> <meta name="DC.Subject" scheme="DDC_CON" content="570-Life sciences" /> <meta..." Line: 29 Column: 1 - 56
"...01-01" /> <meta name="DC.Type" scheme="DCMIType" content="Text" /> <meta..." Line: 30 Column: 1 - 58
"..."Text" /> <meta name="DC.Format" scheme="IMT" content="text/html" /> <meta..." Line: 32 Column: 1 - 73
"...rFile" /> <meta name="DC.Identifier" scheme="URN" content="URN:NBN:cz-nk2007162" /> <meta..." Line: 33 Column: 1 - 58
"...07162" /> <meta name="DC.Language" scheme="RFC3066" content="cze" /> <meta..." Line: 34 Column: 1 - 58
"...="cze" /> <meta name="DC.Language" scheme="RFC3066" content="eng" /> <meta..."

Bad value “1” for attribute “border” on element “img”: Only “0” is a permitted zero literal.

Line: 108 Column: 334 - 416
"...ing/id1/"><img border="1" src="/IMG/VAR/mapsavcicr2.gif" alt="Mapování výskytu savců v ČR" /></a>&n..." Line: 108 Column: 461 - 558
"...ing/id2/"><img border="1" src="/IMG/VAR/mapherpcr2.gif" alt="Mapování výskytu obojživelníků a plazů v ČR" /></a>&n..." Line: 108 Column: 604 - 683
"...ng/id13/"><img border="1" src="/IMG/VAR/maprybycr2.gif" alt="Mapování výskytu ryb v ČR" /></a>&n..." Line: 108 Column: 728 - 832
"...ing/id3/"><img border="1" src="/IMG/VAR/mapbezobratlicr2.gif" alt="Mapování výskytu vybraných bezobratlých v ČR" /></a>&n..."

The “align” attribute on the “td” element is obsolete. Use CSS instead.

Line: 113 Column: 80 - 97
"...xony:</td><td align="right">120400..." Line: 113 Column: 134 - 151
"...ruhy:</td><td align="right">905810..." Line: 113 Column: 195 - 212
"...ázvy:</td><td align="right">47964..." Line: 113 Column: 256 - 273
"...ázvy:</td><td align="right">367099..." Line: 113 Column: 311 - 328
"...ázky:</td><td align="right">320652..." Line: 113 Column: 376 - 393
"...níku:</td><td align="right">5371</..."

Warnings

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

Line: 66 Column: 23 - 42
"...playarea"><a name="screentop"></a><d..."

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

Line: 68 Column: 34 - 105
"...le="Úvod"><img src="/IMG/home.gif" alt="Main" border="0" width="15" height="16" /></a><b..." Line: 69 Column: 44 - 115
"...Nápověda"><img src="/IMG/help.gif" alt="Help" border="0" width="15" height="16" /></a><b..." Line: 70 Column: 45 - 123
"... stránek"><img src="/IMG/sitemap.gif" alt="Site Map" border="0" width="15" height="16" /></a><b..." Line: 72 Column: 34 - 84
"...le="Úvod"><img border="0" src="/IMG/bllogo.gif" alt="logo" /></a></..." Line: 74 Column: 21 - 100
"...cz/main/"><img border="0" width="22" src="/IMG/FLG/CZflag.gif" alt="CZ" title="Čeština" /></a> <..." Line: 75 Column: 21 - 103
"...en/main/"><img border="0" width="22" src="/IMG/FLG/ENflag.gif" alt="EN" title="Angličtina" /></a> <..." Line: 108 Column: 334 - 416
"...ing/id1/"><img border="1" src="/IMG/VAR/mapsavcicr2.gif" alt="Mapování výskytu savců v ČR" /></a>&n..." Line: 108 Column: 461 - 558
"...ing/id2/"><img border="1" src="/IMG/VAR/mapherpcr2.gif" alt="Mapování výskytu obojživelníků a plazů v ČR" /></a>&n..." Line: 108 Column: 604 - 683
"...ng/id13/"><img border="1" src="/IMG/VAR/maprybycr2.gif" alt="Mapování výskytu ryb v ČR" /></a>&n..." Line: 108 Column: 728 - 832
"...ing/id3/"><img border="1" src="/IMG/VAR/mapbezobratlicr2.gif" alt="Mapování výskytu vybraných bezobratlých v ČR" /></a>&n..."

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biolib.cz 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.

biolib.cz 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.

BIOLIB.CZ Taxonomic tree of plants and animals with photos | BioLib.cz

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biolib.cz Desktop Speed Test Quick Summary

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 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 - 2Enable 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 22.2KiB (75% reduction).

priority - 0Optimize images

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

Optimize the following images to reduce their size by 2.6KiB (37% reduction).

priority - 0Leverage 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 - 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 3.3KiB (18% reduction).

biolib.cz Desktop Resource Breakdown

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biolib.cz Mobile Speed Test Quick Summary

priority - 32Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 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 - 2Enable 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 20.8KiB (75% reduction).

priority - 1Leverage 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 - 0Optimize images

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

Optimize the following images to reduce their size by 3.6KiB (41% reduction).

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 3.3KiB (18% reduction).

biolib.cz Mobile Resource Breakdown

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biolib.cz Mobile Usability Test Quick Summary

priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 10Size 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.

priority - 5Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,002 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

biolib.cz HTML validation

Errors

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.

Bad value “content-script-type” for attribute “http-equiv” on element “meta”.

Bad value “content-style-type” for attribute “http-equiv” on element “meta”.

Bad value “schema.DC” for attribute “rel” on element “link”: The string “schema.DC” is not a registered keyword.

The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.

Bad value “1” for attribute “border” on element “img”: Only “0” is a permitted zero literal.

The “align” attribute on the “td” element is obsolete. Use CSS instead.

Warnings

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

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

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