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Centrum.cz Centrum.cz

Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby.

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Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Centrum.cz receives about seventy thousand unique visitors and one hundred thousand pageviews per day. The estimated value of centrum.cz is two million USD. Each unique visitor makes about 2.15 pageviews on average.

Over the time centrum.cz has been ranked as high as 2,039 in the world, while most of its traffic comes from Czech Republic, where it reached as high as 22 position.

It’s good for centrum.cz that their hosting company Economia a.s server is also located in Czech Republic, as that enables the majority of their visitors to benefit from a much faster page load time. See the list of other websites hosted by Economia a.s.

Centrum.cz is registered under .CZ top-level domain. Check other websites in .CZ zone.

At the time of the last check (July 04, 2019) centrum.cz has a valid and up-to-date wildcard SSL certificate that expires on January 03, 2020.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust centrum.cz is quite a safe domain.

Mobile-Friendly test indicates that centrum.cz is well optimized for mobile and tablet devices, however website page loading time could be improved.

Global Rank
4,770
Average Load Time
1.54sec
Links In Count
4,195
Website Value
$1.9 M
Overview
Last Updated: 11/19/2019
Overall result - "centrum.cz" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "centrum.cz" OK.

Norton ConnectSafe evaluates centrum.cz for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 10/10/2016
GSS "centrum.cz" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "centrum.cz".
"centrum.cz" is not a phishing page.
"centrum.cz" does not install unwanted software.
"centrum.cz" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "centrum.cz" OK.

McAfee assesses centrum.cz for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze centrum.cz for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "centrum.cz" VERY GOOD.

The WOT calculates reputation of the centrum.cz. This reputation system receives ratings from users and information from third-party sources, assesses the centrum.cz for safety features and confirms, whether centrum.cz is suitable for children.

SSL Information
Domain *.centrum.cz
Issuer Organization Unknown
Issuer COMODO RSA Domain Validation Secure Server CA
Algorithm RSA-SHA256
Valid form 01/03/2019
Expiration 01/03/2020
Signed Certificate is not self signed
Additional Domains *.centrum.cz
centrum.cz
Server Location
Hlavni mesto
Praha
Czech Republic
ASN Information

ASN ID: 43614
ASN Title: Economia a.s.

Last Update: 05/29/2019

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.

% Information related to 'AS40960 - AS45055'

as-block: AS40960 - AS45055
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2015-12-10T09:19:56Z
last-modified: 2015-12-10T09:19:56Z
source: RIPE

% Information related to 'AS43614'

% Abuse contact for 'AS43614' is 'abuse@centrum.cz'

aut-num: AS43614
as-name: ECONOMIA-CZ
org: ORG-CHs2-RIPE
remarks: --- CD-T ---
mp-export: afi ipv6.unicast to AS25512 announce AS-CHCZ
mp-import: afi ipv6.unicast from AS25512 action pref=200; accept AS-CDT-NETWORKS
import: from AS25512 action pref=200; accept AS-CDT-NETWORKS
export: to AS25512 announce AS-CHCZ
remarks: --- prozeta ---
mp-export: afi ipv6.unicast to AS49025 announce AS43614
mp-import: afi ipv6.unicast from AS49025 action pref=70; accept AS49025
import: from AS49025 action pref=70; accept AS49025
export: to AS49025 announce AS43614
remarks: --- nixcz ---
import: from AS6881 action pref=100; accept AS6881
export: to AS6881 announce AS43614
remarks: --- nix_rs ---
import: from AS47200 action pref=140; accept AS-NIXCZ-RSCLIENTS
export: to AS47200 announce AS43614
remarks: --- nix-WIA ---
import: from AS21430 action pref=160; accept AS21430
export: to AS21430 announce AS43614
remarks: --- nix-e4a ---
import: from AS34695 action pref=160; accept AS34695
export: to AS34695 announce AS43614
remarks: --- nix-nfx ---
import: from AS8251 action pref=160; accept AS-NFX-NIX
export: to AS8251 announce AS43614
remarks: --- nix-mnet ---
import: from AS197197 action pref=160; accept AS197197
export: to AS197197 announce AS43614
remarks: --- nix-jaw.cz ---
import: from AS43070 action pref=160; accept AS-JAW
export: to AS43070 announce AS43614
remarks: --- nix-kaora ---
import: from AS42000 action pref=160; accept AS-KAORA
export: to AS42000 announce AS43614
remarks: --- nix-losan ---
import: from AS41824 action pref=160; accept AS-LOSAN
export: to AS41824 announce AS43614
remarks: --- nix-ha-vel ---
import: from AS15935 action pref=160; accept AS-HA-VEL-CZNIX
export: to AS15935 announce AS43614
remarks: --- nix-miramo ---
import: from AS34080 action pref=160; accept AS34080
export: to AS34080 announce AS43614
remarks: --- nix-ovanet ---
import: from AS39817 action pref=160; accept AS39817
export: to AS39817 announce AS43614
remarks: --- nix-grapesc ---
import: from AS47232 action pref=160; accept AS-GRAPESC-CZ
export: to AS47232 announce AS43614
remarks: --- # transit_GTSCE ---
import: from AS5588 action pref=100; accept ANY
export: to AS5588 announce AS43614
remarks: --- nix-2connect ---
import: from AS35236 action pref=160; accept AS-2CONNECT-NIX
export: to AS35236 announce AS43614
remarks: --- nix-active24 ---
import: from AS25234 action pref=160; accept AS25234
export: to AS25234 announce AS43614
remarks: --- nix-freebone ---
import: from AS34692 action pref=160; accept AS-FREEBONE
export: to AS34692 announce AS43614
remarks: --- nix-master.cz ---
import: from AS24971 action pref=160; accept AS-MASTERCZ-CZNIX
export: to AS24971 announce AS43614
remarks: --- nix-trestelsk ---
import: from AS38949 action pref=160; accept AS38949
export: to AS38949 announce AS43614
remarks: --- nix-vshosting ---
import: from AS43541 action pref=160; accept AS43541
export: to AS43541 announce AS43614
remarks: --- nix-internetcz ---
import: from AS24806 action pref=160; accept AS-INTCZ-NIX
export: to AS24806 announce AS43614
remarks: --- nix-meritgroup ---
import: from AS39904 action pref=160; accept AS-MERIT-NIX
export: to AS39904 announce AS43614
remarks: --- nix-selfservis ---
import: from AS12570 action pref=160; accept AS-CZECHBONE
export: to AS12570 announce AS43614
remarks: --- nix-trioptimum ---
import: from AS33883 action pref=160; accept AS33883
export: to AS33883 announce AS43614
remarks: --- upc-sloane ---
import: from AS29113 accept ANY
export: to AS29113 announce AS43614
remarks: --- nix-edera-group ---
import: from AS42306 action pref=160; accept AS42306
export: to AS42306 announce AS43614
remarks: --- nix-kit-digital ---
import: from AS41711 action pref=160; accept AS41711
export: to AS41711 announce AS43614
remarks: --- nix-maxprogress ---
import: from AS34315 action pref=160; accept AS34315
export: to AS34315 announce AS43614
remarks: --- nix-vodafone-czech ---
import: from AS16019 action pref=160; accept AS16019
export: to AS16019 announce AS43614
remarks: --- nix-dragon-internet ---
import: from AS15614 action pref=160; accept AS-DRAGON
export: to AS15614 announce AS43614
remarks: --- nix-smartcomp-netbox ---
import: from AS31246 action pref=160; accept AS31246
export: to AS31246 announce AS43614
remarks: --- nixcz ---
mp-import: afi ipv6.unicast from AS6881 action pref=100; accept AS6881
mp-export: afi ipv6.unicast to AS6881 announce AS43614
remarks: --- nix_rs ---
mp-import: afi ipv6.unicast from AS47200 action pref=140; accept AS-NIXCZ-RSCLIENTS
mp-export: afi ipv6.unicast to AS47200 announce AS43614
remarks: --- nix-WIA ---
mp-import: afi ipv6.unicast from AS21430 action pref=160; accept AS21430
mp-export: afi ipv6.unicast to AS21430 announce AS43614
remarks: --- nix-e4a ---
mp-import: afi ipv6.unicast from AS34695 action pref=160; accept AS34695
mp-export: afi ipv6.unicast to AS34695 announce AS43614
remarks: --- nix-nfx ---
mp-import: afi ipv6.unicast from AS8251 action pref=160; accept AS-NFX-NIX
mp-export: afi ipv6.unicast to AS8251 announce AS43614
remarks: --- nix-mnet ---
mp-import: afi ipv6.unicast from AS197197 action pref=160; accept AS197197
mp-export: afi ipv6.unicast to AS197197 announce AS43614
remarks: --- nix-jaw.cz ---
mp-import: afi ipv6.unicast from AS43070 action pref=160; accept AS-JAW6
mp-export: afi ipv6.unicast to AS43070 announce AS43614
remarks: --- nix-kaora ---
mp-import: afi ipv6.unicast from AS42000 action pref=160; accept AS-KAORA
mp-export: afi ipv6.unicast to AS42000 announce AS43614
remarks: --- nix-losan ---
mp-import: afi ipv6.unicast from AS41824 action pref=160; accept AS-LOSAN
mp-export: afi ipv6.unicast to AS41824 announce AS43614
remarks: --- nix-ha-vel ---
mp-import: afi ipv6.unicast from AS15935 action pref=160; accept AS-HA-VEL-CZNIX
mp-export: afi ipv6.unicast to AS15935 announce AS43614
remarks: --- nix-miramo ---
mp-import: afi ipv6.unicast from AS34080 action pref=160; accept AS34080
mp-export: afi ipv6.unicast to AS34080 announce AS43614
remarks: --- nix-ovanet ---
mp-import: afi ipv6.unicast from AS39817 action pref=160; accept AS39817
mp-export: afi ipv6.unicast to AS39817 announce AS43614
remarks: --- nix-grapesc ---
mp-import: afi ipv6.unicast from AS47232 action pref=160; accept AS-GRAPESC-CZ
mp-export: afi ipv6.unicast to AS47232 announce AS43614
remarks: --- # transit_GTSCE ---
mp-import: afi ipv6.unicast from AS5588 action pref=100; accept ANY
mp-export: afi ipv6.unicast to AS5588 announce AS43614
remarks: --- nix-2connect ---
mp-import: afi ipv6.unicast from AS35236 action pref=160; accept AS-2CONNECT-NIX
mp-export: afi ipv6.unicast to AS35236 announce AS43614
remarks: --- nix-active24 ---
mp-import: afi ipv6.unicast from AS25234 action pref=160; accept AS25234
mp-export: afi ipv6.unicast to AS25234 announce AS43614
remarks: --- nix-freebone ---
mp-import: afi ipv6.unicast from AS34692 action pref=160; accept AS-FREEBONE
mp-export: afi ipv6.unicast to AS34692 announce AS43614
remarks: --- nix-master.cz ---
mp-import: afi ipv6.unicast from AS24971 action pref=160; accept AS-MASTERCZ-CZNIX
mp-export: afi ipv6.unicast to AS24971 announce AS43614
remarks: --- nix-vshosting ---
mp-import: afi ipv6.unicast from AS43541 action pref=160; accept AS43541
mp-export: afi ipv6.unicast to AS43541 announce AS43614
remarks: --- nix-internetcz ---
mp-import: afi ipv6.unicast from AS24806 action pref=160; accept AS-INTCZ-NIX
mp-export: afi ipv6.unicast to AS24806 announce AS43614
remarks: --- nix-meritgroup ---
mp-import: afi ipv6.unicast from AS39904 action pref=160; accept AS-MERIT-NIX
mp-export: afi ipv6.unicast to AS39904 announce AS43614
remarks: --- nix-selfservis ---
mp-import: afi ipv6.unicast from AS12570 action pref=160; accept AS-CZECHBONE
mp-export: afi ipv6.unicast to AS12570 announce AS43614
remarks: --- nix-upc-sloane ---
mp-import: afi ipv6.unicast from AS29113 action pref=160; accept AS-SLOANE-NIX
mp-export: afi ipv6.unicast to AS29113 announce AS43614
remarks: --- nix-kit-digital ---
mp-import: afi ipv6.unicast from AS41711 action pref=160; accept AS41711
mp-export: afi ipv6.unicast to AS41711 announce AS43614
remarks: --- nix-maxprogress ---
mp-import: afi ipv6.unicast from AS34315 action pref=160; accept AS34315
mp-export: afi ipv6.unicast to AS34315 announce AS43614
remarks: --- nix-vodafone-czech ---
mp-import: afi ipv6.unicast from AS16019 action pref=160; accept AS16019
mp-export: afi ipv6.unicast to AS16019 announce AS43614
remarks: --- nix-dragon-internet ---
mp-import: afi ipv6.unicast from AS15614 action pref=160; accept AS-DRAGON6
mp-export: afi ipv6.unicast to AS15614 announce AS43614
remarks: --- prozeta ---
admin-c: CHIT1-RIPE
tech-c: CHIT1-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CH1-MNT
mnt-routes: CH1-MNT
created: 2011-02-02T16:55:16Z
last-modified: 2017-11-15T12:20:07Z
source: RIPE

organisation: ORG-CHs2-RIPE
org-name: Economia a.s.
org-type: LIR
address: Pernerova 673/47
address: 18600
address: Prague
address: CZECH REPUBLIC
phone: +420233071111
fax-no: +420224800370
admin-c: CHSB-RIPE
admin-c: CHMA-RIPE
abuse-c: AR14406-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: CH1-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: CH1-MNT
created: 2010-12-30T12:25:06Z
last-modified: 2017-02-16T08:20:19Z
source: RIPE # Filtered

role: Economia IT department
address: Economia a.s.
address: Pernerova 37
address: 18600 Prague
address: CZECH REPUBLIC
abuse-mailbox: abuse@centrum.cz
admin-c: CHMA-RIPE
tech-c: CHMA-RIPE
nic-hdl: CHIT1-RIPE
mnt-by: CH1-MNT
created: 2011-01-05T10:27:23Z
last-modified: 2015-02-16T08:43:55Z
source: RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.91.2 (ANGUS)

HTML Metatags
Title
Centrum.cz
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
Centrum.cz je český internetový portál nabízející e-mail, aktuální zpravodajství, počasí a další zajímavé služby.
The description has optimal length. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
cs Czech
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Success, no any <img> without defined ALT attribute. Alt text is helpful to end users if they have images disabled or if the image does not properly load.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
The H1 tag is missing
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about. Add a header to the page by using a H1 tag and place it within the BODY of the page source.
H2
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
H5
H6
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
0.02 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Line 11, https://hpxs.xsd.cz/1.60.2/images/favicon/centrum.ico
Line 12, https://hpxs.xsd.cz/1.60.2/images/favicon/centrum.ico
default, favicon.ico
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Line 14, https://hpxs.xsd.cz/1.60.2/images/favicon/centrum-16x16.png
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Line 15, https://hpxs.xsd.cz/1.60.2/images/favicon/centrum-32x32.png
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Line 16, https://hpxs.xsd.cz/1.60.2/images/favicon/centrum-96x96.png
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (/robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
Not found
Other User-Agent
Not found
Default User-Agent
1 record(s)
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File Loaded successfully (/sitemap.xml)
Using a sitemap doesn't guarantee that all the items in your sitemap will be crawled and indexed, however, your site will benefit from having a sitemap.
WHOIS

% (c) 2006-2019 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: 3.12.0
% Timestamp: Tue Oct 01 15:54:59 2019

domain: centrum.cz
registrant: CENTRUM-CZ
admin-c: CENTRUM-CZ
nsset: CENTRUM-CLOUDFLARE2
keyset: AUTO-JF4LFJI5Z0QNSBW6631A1HZ8A
registrar: REG-CENTRUM
registered: 12.07.1997 02:00:00
changed: 19.06.2019 14:23:15
expire: 24.10.2022

contact: CENTRUM-CZ
org: Economia, a.s.
name: Economia, a.s.
address: Pernerova 47
address: Praha 8
address: 18600
address: CZ
registrar: REG-CENTRUM
created: 11.03.2013 14:31:30
changed: 03.06.2019 11:16:50

nsset: CENTRUM-CLOUDFLARE2
nserver: max.ns.cloudflare.com
nserver: pam.ns.cloudflare.com
tech-c: CENTRUM-CZ
registrar: REG-CENTRUM
created: 11.06.2019 10:51:43

keyset: AUTO-JF4LFJI5Z0QNSBW6631A1HZ8A
dnskey: 257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
tech-c: CZ-NIC
registrar: REG-CZNIC
created: 19.06.2019 14:23:15

contact: CZ-NIC
org: CZ.NIC, z.s.p.o.
name: CZ.NIC, z.s.p.o.
address: Milesovska 1136/5
address: Praha 3
address: 130 00
address: CZ
registrar: REG-CZNIC
created: 17.10.2008 12:08:21
changed: 15.05.2018 21:32:00

DNS Records
HostA RecordTTL
centrum.cz46.255.231.106300
HostMX RecordPriorityTTL
centrum.czcbx.virusfree.cz20300
centrum.czcax.virusfree.cz10300
centrum.czccx.spamfree.cz30300
centrum.czcdx.spamfree.cz40300
HostNS RecordTTL
centrum.czmax.ns.cloudflare.com86400
centrum.czpam.ns.cloudflare.com86400
HostTXT RecordTTL
centrum.czamazonses:zhwnMMKwePHOMKAE378OO5hqbD1h+VXiQvh7TgZFkQc=300
centrum.czgoogle-site-verification=uOQOS8Qfjty5hHS3I9DCL5P_t11ujP4VVpi9bjvBxao300
centrum.czv=spf1 redirect=_spf.centrum.cz300
centrum.czca3-fb23781d6ba5408095ece55035b90b65300

max.ns.cloudflare.com
TTL: 3600
Email address: dns.cloudflare.com
Serial: 2031640495
Refresh: 10000
Retry: 2400
Expire: 604800
Minimum: 3600

Errors
Line: 18 Column: 3 - 127
"...z.ico"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-57x57.png" sizes="57x57"> <li..."
Line: 19 Column: 3 - 131
"...57x57"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-114x114.png" sizes="114x114"> <li..."
Line: 20 Column: 3 - 127
"...4x114"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-72x72.png" sizes="72x72"> <li..."
Line: 21 Column: 3 - 131
"...72x72"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-144x144.png" sizes="144x144"> <li..."
Line: 22 Column: 3 - 127
"...4x144"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-60x60.png" sizes="60x60"> <li..."
Line: 23 Column: 3 - 131
"...60x60"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-120x120.png" sizes="120x120"> <li..."
Line: 24 Column: 3 - 127
"...0x120"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-76x76.png" sizes="76x76"> <li..."
Line: 25 Column: 3 - 131
"...76x76"> <link rel="apple-touch-icon-precomposed" href="//i0.cz/bbx/hp_cz_centrum/img/icons/apple-touch-icon-152x152.png" sizes="152x152"> <li..."

Last tested: 06/12/2016

Desktop
Desktop Speed
55%
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://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js (expiration not specified)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…71b3736320015eb0700.js (expiration not specified)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…2623064311a48640300.js (expiration not specified)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…93464746d0582000c11.js (expiration not specified)
https://content.aimatch.com/cent/136/XperiaX_1030x100.jpg (expiration not specified)
https://content.aimatch.com/cent/136/XperiaX_backround.jpg (expiration not specified)
https://content.aimatch.com/cent/241/128x96_upc_cerven.jpg (expiration not specified)
https://content.aimatch.com/cent/8/Economia_ING_Akvizice_128x96.png (expiration not specified)
https://secure-assets.rubiconproject.com/static/psa/55.jpg (expiration not specified)
https://secure-assets.rubiconproject.com/static/ps…/RUBICON-300x250-2.jpg (expiration not specified)
https://www.centrum.cz/customdata/default/ (expiration not specified)
https://i0.cz/sashec/js/sashec.bundle.min.js?v=67857 (15 minutes)
https://cdn.i0.cz/public-data/02/ed/95cee92c3cf5b6…d75310793d7d8b2e215689 (60 minutes)
https://cdn.i0.cz/public-data/08/81/a2d01b1a33f9b1…8f234976e14e6743e41a36 (60 minutes)
https://cdn.i0.cz/public-data/0b/19/8264389a37acba…a0cf50c073f88c5ccbbe1f (60 minutes)
https://cdn.i0.cz/public-data/10/09/cbb5fd31313d8f…76aa642a43c4cb3fe28763 (60 minutes)
https://cdn.i0.cz/public-data/16/09/62ec2c6e379ab9…ab444dce6c27cd86544f33 (60 minutes)
https://cdn.i0.cz/public-data/21/45/7b35eff235eba4…c3aee0b2d7b3388f9fe99c (60 minutes)
https://cdn.i0.cz/public-data/26/67/45a6298b3e5ba8…a65c9cb03757b6fc412e3d (60 minutes)
https://cdn.i0.cz/public-data/3b/69/996660e43ae58a…79f80f4b55c36ec3852628 (60 minutes)
https://cdn.i0.cz/public-data/43/23/a0993d0632488a…58ce9b7dc9391effdb81c4 (60 minutes)
https://cdn.i0.cz/public-data/48/df/210acf4431e7b9…5c2ae55112a34b4d13ca65 (60 minutes)
https://cdn.i0.cz/public-data/4a/49/e9a16efc36979f…a71b284190ea033919ed82 (60 minutes)
https://cdn.i0.cz/public-data/4e/be/496c92d03e54a5…d6ca7bebae360a050439f5 (60 minutes)
https://cdn.i0.cz/public-data/53/aa/4fb9208a39d7ae…94e2c4c797be85333d6c0f (60 minutes)
https://cdn.i0.cz/public-data/54/3d/1e1b030733a4af…c82f1ab1ce11848bcf79bf (60 minutes)
https://cdn.i0.cz/public-data/62/99/4ac3d2ee37ffa2…8ffb9f3c8a75fb838a59d1 (60 minutes)
https://cdn.i0.cz/public-data/65/01/ce552ab932c9bc…1638264ef787ed158c4b8f (60 minutes)
https://cdn.i0.cz/public-data/6b/39/36dc64f73daaad…f160dd1ba6109ab4da115c (60 minutes)
https://cdn.i0.cz/public-data/6d/28/3429bf41364db9…d94f97bb228b7cbf410b6f (60 minutes)
https://cdn.i0.cz/public-data/6d/65/2a3ce5f03b3380…6330cf1104b60f1ac2fa3a (60 minutes)
https://cdn.i0.cz/public-data/72/37/3b32c69d3d0993…bfb82167b0fc3337c9b0c5 (60 minutes)
https://cdn.i0.cz/public-data/7e/ad/becf83943e3782…bda60420aeb9bc44c2daa8 (60 minutes)
https://cdn.i0.cz/public-data/80/8e/73836b343c5684…15434a84e9f8a5d9a570ae (60 minutes)
https://cdn.i0.cz/public-data/83/37/349e0efb376088…c9bf10726cc43a2cee8852 (60 minutes)
https://cdn.i0.cz/public-data/85/6c/c48016dc343c92…2c4217fd3cb8ec8630b7e1 (60 minutes)
https://cdn.i0.cz/public-data/87/a9/633eb0673a4f89…e821330c130e1837cc927a (60 minutes)
https://cdn.i0.cz/public-data/8a/96/d17f423a38a4bf…556e7aec1b5855bb5a6c1f (60 minutes)
https://cdn.i0.cz/public-data/8c/01/53fd701838ee81…84feeff249759bd3bdca9d (60 minutes)
https://cdn.i0.cz/public-data/8e/3a/38bd6f343aaeaf…6956375ecbd1cf4aa145bf (60 minutes)
https://cdn.i0.cz/public-data/96/c6/c82ed4db357da1…1baabf605ba613f5799901 (60 minutes)
https://cdn.i0.cz/public-data/97/c9/97790fe73ef48d…90720b1cead353ef1bd187 (60 minutes)
https://cdn.i0.cz/public-data/b0/ee/202e1ccf38f198…360e67ea00fcdf8b05533a (60 minutes)
https://cdn.i0.cz/public-data/b2/77/949a25e33effa4…3b8ed6d96fc030d5b9391d (60 minutes)
https://cdn.i0.cz/public-data/b2/8f/5776aa75342cab…a9060fca472540378d471e (60 minutes)
https://cdn.i0.cz/public-data/b3/cd/1a3c5af4395aa8…128884342dc160374fd943 (60 minutes)
https://cdn.i0.cz/public-data/b7/f5/28dc80c83776a8…1ef6dab2d98fa09da3e564 (60 minutes)
https://cdn.i0.cz/public-data/c1/df/82255230311997…5bcc9e2f3d7aff6d7e8e17 (60 minutes)
https://cdn.i0.cz/public-data/c4/dc/c9cfd84f3351bb…0efc8c008192977cccf8a4 (60 minutes)
https://cdn.i0.cz/public-data/ce/60/63de1793332899…421d198515a9467ba96bdd (60 minutes)
https://cdn.i0.cz/public-data/dd/01/e35971863ab791…75ee8c9427de4b52b734c5 (60 minutes)
https://cdn.i0.cz/public-data/e7/b4/9a0182953990ad…a17e480a1f32c66aba27ac (60 minutes)
https://cdn.i0.cz/public-data/ec/ab/1878c695379e96…5cb693cdcde2fd65666b14 (60 minutes)
https://cdn.i0.cz/public-data/ef/7f/eae856fe3d5d82…522228ab38d6142ffaecff (60 minutes)
https://cdn.i0.cz/public-data/f2/0b/57151858397a8f…84ca97982cdc9697662eaf (60 minutes)
https://cdn.i0.cz/public-data/f5/67/6d177b543e5ab1…aaac46e1b5e6bf974c712f (60 minutes)
https://cdn.i0.cz/public-data/f5/fb/65531eb738649d…cee82884e26d9160d956d2 (60 minutes)
https://cdn.i0.cz/public-data/f7/b6/47a5f0893e36bf…44c22770b7b8afc6699fa5 (60 minutes)
https://cdn.i0.cz/public-data/ff/c9/6c9efdc33810be…1c8899546a0c9c7d7376a3 (60 minutes)
https://cdn.i0.cz/src/public-data/6d/65/2a3ce5f03b…04d18_base_optimal.jpg (60 minutes)
https://cdn.i0.cz/src/public-data/b0/ee/202e1ccf38…4c8c5_base_optimal.jpg (60 minutes)
https://cdn.i0.cz/src/public-data/b2/77/949a25e33e…c37cb_base_optimal.jpg (60 minutes)
https://cdn.i0.cz/src/public-data/c4/dc/c9cfd84f33…bce97_base_optimal.jpg (60 minutes)
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_105036_15 (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_145478_55 (60 minutes)
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_306436_15 (60 minutes)
https://ads.rubiconproject.com/ad/10900.js (87.4 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

Your page has 20 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
None 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://i0.cz/l/js/ego/ego.js?v=20130630
https://i0.cz/bbx/homepage/js/head-desktop.js?v=c99435
https://i0.cz/sashec/js/sashec.bundle.min.js?v=67857
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…71b3736320015eb0700.js
https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0
https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_105036_15
https://optimized-by.rubiconproject.com/a/10900/26…4x768&ad_slot=26466_15
https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0
https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_306436_15
https://optimized-by.rubiconproject.com/a/10900/26…0x600%20and%20300x600)
https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0
https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_145478_55
https://optimized-by.rubiconproject.com/a/10900/26…4x768&ad_slot=26466_55
https://i0.cz/bbx/homepage/js//functions-desktop.js?v=c99435
https://i0.cz/search-shared/js/kibitz_shared.merge.js?667_5a05ce
https://www.googleadservices.com/pagead/conversion.js

Optimize CSS Delivery of the following:

https://i0.cz/bbx/hp_cz_centrum/css/desktop/style.css?v=d69dcd
https://fonts.googleapis.com/css?family=Roboto:400…subset=latin,latin-ext

Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.

http://centrum.cz/
https://centrum.cz/
http://www.centrum.cz/
https://www.centrum.cz/

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 47.2KiB (44% reduction).

Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/pocasi-sprite.png could save 20.8KiB (56% reduction).
Losslessly compressing https://secure-assets.rubiconproject.com/static/psa/55.jpg could save 15.8KiB (35% reduction).
Losslessly compressing https://content.aimatch.com/cent/8/Economia_ING_Akvizice_128x96.png could save 3.3KiB (49% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/firmy-panel-sprite.png could save 1.6KiB (31% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/logo-2x.png could save 1.2KiB (23% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/blue-arrow.png could save 867B (76% reduction).
Losslessly compressing https://i0.cz/reklama/bo/sas/transparent.png could save 856B (92% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/odrazka.png could save 845B (88% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/odrazka2.png could save 845B (88% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/reklama-vertical-shadow.png could save 695B (35% reduction).
Losslessly compressing https://content.aimatch.com/cent/241/128x96_upc_cerven.jpg could save 595B (20% reduction).

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 35.2KiB (80% reduction).

Compressing https://a.centrum.cz/cent/bserver/ball/random=3686…commend/pos=p/async=1/ could save 27.9KiB (83% reduction).
Compressing https://www.centrum.cz/customdata/default/ could save 3.4KiB (75% reduction).
Compressing https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0 could save 1.3KiB (63% reduction).
Compressing https://a.centrum.cz/cent/lserver/jserver/random=7…=d/template=hp/async=0 could save 1.3KiB (64% reduction).
Compressing https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0 could save 1.3KiB (64% reduction).

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 31% of the final above-the-fold content could be rendered with the full HTML response snapshot:24.

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 1.8KiB (19% reduction).

Minifying https://i0.cz/search-shared/js/kibitz_shared.merge.js?667_5a05ce could save 1.2KiB (26% reduction) after compression.
Minifying https://spir.hit.gemius.pl/xgemius.js could save 637B (13% reduction) after compression.

Desktop Resource Breakdown
Total Resources146
Number of Hosts27
Static Resources105
JavaScript Resources29
CSS Resources2

Last tested: 06/12/2016

Mobile
Mobile Usability
99%
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="http://tvprogr…erm=position-0">TV program</a> is close to 1 other tap targets.
The tap target <a href="http://tvprogr…erm=position-1">My všichni ško…ovinní (11/13)</a> is close to 1 other tap targets.
The tap target <a href="https://r.i0.c…=1465722123471">Zdravotnický asistent</a> is close to 1 other tap targets.

Mobile Speed
42%
Your page has 12 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None 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://i0.cz/l/js/ego/ego.js?v=20130630
https://i0.cz/bbx/hp_cz_centrum/js//head-smart.js?v=c99435
https://i0.cz/bbx/hp_cz_centrum/js//smart-app-banner.js
https://i0.cz/sashec/js/sashec.bundle.min.js?v=67857
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…71b3736320015eb0700.js
https://a.centrum.cz/cent/jserver/random=70049592/…=m/template=hp/async=0
https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_105036_15
https://optimized-by.rubiconproject.com/a/10900/26…2x732&ad_slot=26466_15
https://i0.cz/bbx/hp_cz_centrum/js/functions-smart.js?v=c99435
https://www.googleadservices.com/pagead/conversion.js

Optimize CSS Delivery of the following:

https://i0.cz/bbx/hp_cz_centrum/css/smart/style.css?v=d69dcd
https://fonts.googleapis.com/css?family=Roboto:400…subset=latin,latin-ext
https://i0.cz/bbx/hp_cz_centrum/css/smart/smart-app-banner.css?v=d69dcd

Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.

http://centrum.cz/
https://centrum.cz/
http://www.centrum.cz/
https://www.centrum.cz/

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://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js (expiration not specified)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…71b3736320015eb0700.js (expiration not specified)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…93464746d0582000c11.js (expiration not specified)
https://content.aimatch.com/cent/382/20160525_BLV_economia_728x90.jpg (expiration not specified)
https://secure-assets.rubiconproject.com/static/ps…/RUBICON-300x250-2.jpg (expiration not specified)
https://i0.cz/sashec/js/sashec.bundle.min.js?v=67857 (15 minutes)
https://cdn.i0.cz/public-data/07/d3/451b170e36c8aa…e9f3450571083843187a0c (60 minutes)
https://cdn.i0.cz/public-data/09/0d/bbbf1ee6315598…f3a83dcf5599d7664aa507 (60 minutes)
https://cdn.i0.cz/public-data/10/09/cbb5fd31313d8f…2248ffb400510c5e6b29fa (60 minutes)
https://cdn.i0.cz/public-data/16/09/62ec2c6e379ab9…cc7503cd309dc794865e62 (60 minutes)
https://cdn.i0.cz/public-data/1d/98/0443a7573cdbb3…ef37a1b1ff7a62e091beca (60 minutes)
https://cdn.i0.cz/public-data/21/45/7b35eff235eba4…548556e3befc7f8d88dec8 (60 minutes)
https://cdn.i0.cz/public-data/3b/69/996660e43ae58a…8de3ae51a1e41fa6981515 (60 minutes)
https://cdn.i0.cz/public-data/40/07/5a7e21a43555b8…cd50ee5c064540780b8e54 (60 minutes)
https://cdn.i0.cz/public-data/48/df/210acf4431e7b9…629b95cd7df7adb6444acc (60 minutes)
https://cdn.i0.cz/public-data/60/20/8def3779310890…668c17e15d25376aa7c19f (60 minutes)
https://cdn.i0.cz/public-data/62/99/4ac3d2ee37ffa2…2f989e2a8a0ca7c73a47d1 (60 minutes)
https://cdn.i0.cz/public-data/65/01/ce552ab932c9bc…0623882dc039ef0f8edb6f (60 minutes)
https://cdn.i0.cz/public-data/6c/00/0694d97035f39f…569e1aef770da61ac5f402 (60 minutes)
https://cdn.i0.cz/public-data/6d/28/3429bf41364db9…4750fcf5d218e199c83283 (60 minutes)
https://cdn.i0.cz/public-data/72/37/3b32c69d3d0993…fa339af2c3b9df4f857cd9 (60 minutes)
https://cdn.i0.cz/public-data/8a/96/d17f423a38a4bf…4345da10c36215c91f4873 (60 minutes)
https://cdn.i0.cz/public-data/8c/01/53fd701838ee81…08ad14d21db286f75843fb (60 minutes)
https://cdn.i0.cz/public-data/97/c9/97790fe73ef48d…77a7745bd83e8cff137fbc (60 minutes)
https://cdn.i0.cz/public-data/99/25/740cce6a35aa9e…fe1e34f0eb665c6b42e45a (60 minutes)
https://cdn.i0.cz/public-data/9c/87/a9f38a233ced8f…f4bcd3b3baa73af046d646 (60 minutes)
https://cdn.i0.cz/public-data/ac/58/7b550e2f397ab5…63cc34f800a45870eee33f (60 minutes)
https://cdn.i0.cz/public-data/b7/f5/28dc80c83776a8…1b3b8fae3a93857e3f6b1f (60 minutes)
https://cdn.i0.cz/public-data/b8/85/b283d75e372aad…03418333d2326f8f2f49c5 (60 minutes)
https://cdn.i0.cz/public-data/c1/df/82255230311997…1a4188f483b26a86fe0e4c (60 minutes)
https://cdn.i0.cz/public-data/e7/b4/9a0182953990ad…078311b666be4fd77c6c7e (60 minutes)
https://cdn.i0.cz/public-data/ec/ab/1878c695379e96…20bfdcbd1e645fe8e87907 (60 minutes)
https://cdn.i0.cz/public-data/f2/0b/57151858397a8f…636f15fe96a34ed84544cc (60 minutes)
https://cdn.i0.cz/public-data/f5/fb/65531eb738649d…756659da1d9bc1150e2cc9 (60 minutes)
https://cdn.i0.cz/public-data/ff/c9/6c9efdc33810be…b2106ceeed340ca355f730 (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_105036_15 (60 minutes)
https://ads.rubiconproject.com/ad/10900.js (107.2 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

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 66% of the final above-the-fold content could be rendered with the full HTML response snapshot:15.

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 12KiB (36% reduction).

Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-04.png could save 1.3KiB (33% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/flag-icons.png could save 1.2KiB (21% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-05.png could save 1.1KiB (58% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/play-photo-sprite.png could save 1.1KiB (48% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-03.png could save 1.1KiB (35% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-01.png could save 1KiB (37% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-02.png could save 1,021B (36% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/real-06.png could save 1,000B (32% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/checkbox-icon.png could save 868B (78% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/menu-icon.png could save 866B (86% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/personal-icon.png could save 809B (63% reduction).
Losslessly compressing https://i0.cz/bbx/hp_cz_centrum/img/smart/logo-2x.png could save 784B (16% reduction).

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 2KiB (60% reduction).

Compressing https://a.centrum.cz/cent/lserver/jserver/random=7…=m/template=hp/async=0 could save 1.3KiB (64% reduction).
Compressing https://a.centrum.cz/cent/bserver/ball/random=3761…b1/size=strip/async=1/ could save 690B (53% reduction).

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 637B (13% reduction).

Minifying https://spir.hit.gemius.pl/xgemius.js could save 637B (13% reduction) after compression.

Mobile Resource Breakdown
Total Resources94
Number of Hosts24
Static Resources65
JavaScript Resources20
CSS Resources3
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