knihcentrum.cz website information.
knihcentrum.cz domain name is registered by .CZ top-level domain registry. See the other sites registred in .CZ domain zone.
Following name servers are specified for knihcentrum.cz domain:
- ns.forpsi.cn
- ns.forpsi.cz
- ns.forpsi.us
- ns.forpsi.net
and probably website knihcentrum.cz is hosted by AUTOMATTIC - Automattic, Inc, US web hosting company. Check the complete list of other most popular websites hosted by AUTOMATTIC - Automattic, Inc, US hosting company.
According to Alexa traffic rank the highest website knihcentrum.cz position was 16220 (in the world). The lowest Alexa rank position was 982034. Now website knihcentrum.cz ranked in Alexa database as number 396602 (in the world).
Website knihcentrum.cz Desktop speed measurement score (63/100) is better than the results of 39.87% of other sites shows that the page desktop performance can be improved.
knihcentrum.cz Mobile usability score (97/100) is better than the results of 49.9% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of knihcentrum.cz (48/100) is better than the results of 30.32% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-25-2024 | 396,602 | -13,000 |
| Nov-24-2024 | 383,602 | 1,338 |
| Nov-23-2024 | 384,940 | 1,551 |
| Nov-22-2024 | 386,491 | 3,070 |
| Nov-21-2024 | 389,561 | 9,930 |
| Nov-20-2024 | 399,491 | -23,706 |
| Nov-19-2024 | 375,785 | 12,409 |
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knihcentrum.cz Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
knihcentrum.cz whois
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knihcentrum.cz server information
knihcentrum.cz desktop page speed rank
Last tested: 2019-01-01
Desktop Speed
Bad
63/100
knihcentrum.cz Desktop Speed Test Quick Summary
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priority - 11 Reduce server response time
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priority - 6 Leverage browser caching
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priority - 2 Prioritize visible content
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Click to see the screenshot with only the HTML response:
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Minifying https://www.knihcentrum.cz/Plugins/Shop.BrainSearc…4b0f-a913-63d55b61cf80 could save 825B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80 could save 484B (22% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/ShoppingCart.Ad…4b0f-a913-63d55b61cf80 could save 400B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/public.common.j…4b0f-a913-63d55b61cf80 could save 331B (27% reduction) after compression.
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Minifying https://www.knihcentrum.cz/Scripts/public.ajaxcart…4b0f-a913-63d55b61cf80 could save 220B (27% reduction) after compression.
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Minifying https://www.knihcentrum.cz/Plugins/Product.Context…/Scripts/pcx.public.js could save 159B (22% reduction) after compression.
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Minifying https://www.knihcentrum.cz/Plugins/Configuration.S…4b0f-a913-63d55b61cf80 could save 116B (23% reduction) after compression.
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 2KiB (11% reduction).
Minifying https://www.knihcentrum.cz/ could save 2KiB (11% reduction) after compression.
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 620B (12% reduction).
Minifying https://www.knihcentrum.cz/Content/jquery-ui-theme…4b0f-a913-63d55b61cf80 could save 620B (12% reduction) after compression.
knihcentrum.cz Desktop Resources
| Total Resources | 150 |
| Number of Hosts | 21 |
| Static Resources | 127 |
| JavaScript Resources | 36 |
| CSS Resources | 10 |
knihcentrum.cz Desktop Resource Breakdown
knihcentrum.cz mobile page speed rank
Last tested: 2019-01-01
Mobile Speed
Bad
48/100
knihcentrum.cz Mobile Speed Test Quick Summary
priority - 64 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 8 blocking script resources and 7 blocking CSS resources. This causes a delay in rendering your page.
Approximately 8% of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://www.knihcentrum.cz/Scripts/jquery-1.10.2.m…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery-ui-1.10.…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery-migrate-…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Shop.PopupMarke…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Shop.BrainPerfo…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Product.Context…/Scripts/pcx.public.js
https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery-ui-1.10.…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Scripts/jquery-migrate-…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Shop.PopupMarke…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Shop.BrainPerfo…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Product.Context…/Scripts/pcx.public.js
Optimize CSS Delivery of the following:
https://www.knihcentrum.cz/Themes/Brainest/Content…80.less?ver=01012019-3
https://fonts.googleapis.com/css?family=Merriweather
https://www.knihcentrum.cz/Content/jquery-ui-theme…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Widgets.Respons…4b0f-a913-63d55b61cf80
https://fonts.googleapis.com/css?family=Merriweather
https://fonts.googleapis.com/css?family=Merriweather
https://www.knihcentrum.cz/Plugins/Shop.BrainAcces…4b0f-a913-63d55b61cf80
https://fonts.googleapis.com/css?family=Merriweather
https://www.knihcentrum.cz/Content/jquery-ui-theme…4b0f-a913-63d55b61cf80
https://www.knihcentrum.cz/Plugins/Widgets.Respons…4b0f-a913-63d55b61cf80
https://fonts.googleapis.com/css?family=Merriweather
https://fonts.googleapis.com/css?family=Merriweather
https://www.knihcentrum.cz/Plugins/Shop.BrainAcces…4b0f-a913-63d55b61cf80
priority - 15 Reduce server response time
In our test, your server responded in 1.2 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 12 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 119.8KiB (24% reduction).
Compressing https://www.knihcentrum.cz/Logos/KNIHCENTRUM.cz.JPG could save 17.5KiB (70% reduction).
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Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/css/images/home-ikon.png could save 336B (44% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/images/Benefit/den.png could save 326B (17% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…es/Benefit/procent.png could save 286B (18% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/images/Benefit/auto.png could save 204B (15% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…es/Benefit/krabice.png could save 198B (16% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…t/calendar-content.png could save 197B (34% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/images/Benefit/kniha.png could save 192B (17% reduction).
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Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/images/Benefit/mesec.png could save 160B (14% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…ext/audio-content2.png could save 159B (22% reduction).
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Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…ntext/maps-content.png could save 144B (18% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…arrow-slider-right.png could save 130B (11% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content…text/e-pub-content.png could save 123B (25% reduction).
priority - 9 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://d70shl7vidtft.cloudfront.net/ecmtr-2.4.2.js (expiration not specified)
https://d70shl7vidtft.cloudfront.net/widget.js (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-P7C5QG (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/180962…2402?v=2.8.35&r=stable (20 minutes)
https://www.google-analytics.com/plugins/ga/inpage_linkid.js (60 minutes)
https://www.googleadservices.com/pagead/conversion.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…68.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…40.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…80.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…80.less?ver=01012019-3 (24 hours)
https://d70shl7vidtft.cloudfront.net/widget.js (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-P7C5QG (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/180962…2402?v=2.8.35&r=stable (20 minutes)
https://www.google-analytics.com/plugins/ga/inpage_linkid.js (60 minutes)
https://www.googleadservices.com/pagead/conversion.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…68.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…40.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…80.less?ver=01012019-3 (24 hours)
https://www.knihcentrum.cz/Themes/Brainest/Content…80.less?ver=01012019-3 (24 hours)
priority - 8 Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 50% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 8 Enable 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 76.4KiB (66% reduction).
Compressing https://d70shl7vidtft.cloudfront.net/ecmtr-2.4.2.js could save 41.7KiB (64% reduction).
Compressing https://d70shl7vidtft.cloudfront.net/widget.js could save 31.8KiB (70% reduction).
Compressing https://knihcentrum.ecomailapp.cz/public/forms/11/…fe00cb568981584ec149e7 could save 2.5KiB (64% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/css/images/person.svg could save 328B (37% reduction).
Compressing https://d70shl7vidtft.cloudfront.net/widget.js could save 31.8KiB (70% reduction).
Compressing https://knihcentrum.ecomailapp.cz/public/forms/11/…fe00cb568981584ec149e7 could save 2.5KiB (64% reduction).
Compressing https://www.knihcentrum.cz/Themes/Brainest/Content/css/images/person.svg could save 328B (37% reduction).
priority - 1 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 6.7KiB (21% reduction).
Minifying https://www.knihcentrum.cz/Themes/Brainest/Content…4b0f-a913-63d55b61cf80 could save 2.5KiB (21% reduction) after compression.
Minifying https://ssl.heureka.cz/direct/i/gjs.php?n=wdgt&sak…1DE01E206331D10DB8FB93 could save 974B (21% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Shop.BrainSearc…4b0f-a913-63d55b61cf80 could save 825B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80 could save 484B (22% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/ShoppingCart.Ad…4b0f-a913-63d55b61cf80 could save 400B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/public.common.j…4b0f-a913-63d55b61cf80 could save 331B (27% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Widgets.Respons…4b0f-a913-63d55b61cf80 could save 269B (18% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/public.ajaxcart…4b0f-a913-63d55b61cf80 could save 220B (27% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Shop.PopupMarke…4b0f-a913-63d55b61cf80 could save 192B (16% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Product.Context…/Scripts/pcx.public.js could save 159B (22% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Product.WatchDo…913-63d55b61cf80&ver=1 could save 153B (15% reduction) after compression.
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Minifying https://www.knihcentrum.cz/Plugins/Configuration.S…4b0f-a913-63d55b61cf80 could save 116B (23% reduction) after compression.
Minifying https://ssl.heureka.cz/direct/i/gjs.php?n=wdgt&sak…1DE01E206331D10DB8FB93 could save 974B (21% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Shop.BrainSearc…4b0f-a913-63d55b61cf80 could save 825B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/jquery.validate…4b0f-a913-63d55b61cf80 could save 484B (22% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/ShoppingCart.Ad…4b0f-a913-63d55b61cf80 could save 400B (20% reduction) after compression.
Minifying https://www.knihcentrum.cz/Scripts/public.common.j…4b0f-a913-63d55b61cf80 could save 331B (27% reduction) after compression.
Minifying https://www.knihcentrum.cz/Plugins/Widgets.Respons…4b0f-a913-63d55b61cf80 could save 269B (18% reduction) after compression.
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priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 2KiB (11% reduction).
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priority - 0 Minify CSS
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Minify CSS for the following resources to reduce their size by 620B (12% reduction).
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knihcentrum.cz Mobile Resources
| Total Resources | 145 |
| Number of Hosts | 20 |
| Static Resources | 122 |
| JavaScript Resources | 36 |
| CSS Resources | 10 |
knihcentrum.cz Mobile Resource Breakdown
knihcentrum.cz mobile page usability
Last tested: 2019-01-01
Mobile Usability
Good
97/100
knihcentrum.cz Mobile Usability Test Quick Summary
priority - 2 Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="/podminky-ochr…hcentrumcz-sro" class="another-topic">Zásady ochrany osobních údajů</a> is close to 1 other tap targets.The tap target
<a href="/autor/mgr-tomas-kosacik">Mgr. Tomáš Kosačík</a> and 1 others are close to other tap targets.The tap target
<a href="/obchodni-podminky">Obchodní podmínky</a> and 19 others are close to other tap targets.knihcentrum.cz similar domains
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knihcentrum.cz Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
knihcentrum.cz TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.