cerva.com Website Information

Daily Unique Visits: 821

Daily Page Views: 1,642

Income Per Day: $5

Estimated Value: $1,200

This website is located in Germany and is using following IP address 139.59.155.232. See the complete list of popular websites hosted in Germany.

cerva.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website cerva.com is using the following name servers:

alfa.ns.active24.cz
beta.ns.active24.cz

and is probably hosted by RADIOKOMUNIKACE a.s.. See the full list of other websites hosted by RADIOKOMUNIKACE a.s..

The highest website cerva.com position in Alexa rank database was 32141 and the lowest rank position was 996735. Current position of cerva.com in Alexa rank database is 873426.

Desktop speed score of cerva.com (34/100) is better than the results of 10.71% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of cerva.com (95/100) is better than the results of 39.69% of other sites and means that the page is mobile-friendly.

Mobile speed score of cerva.com (22/100) is better than the results of 5.33% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

cerva.com 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.

cerva.com 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 Name: CERVA.COM
Registry Domain ID: 90428233_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.ascio.com
Registrar URL: http://www.ascio.com
Updated Date: 2024-08-21T23:57:51Z
Creation Date: 2002-09-19T15:02:02Z
Registry Expiry Date: 2025-09-19T15:02:59Z
Registrar: Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
Registrar IANA ID: 106
Registrar Abuse Contact Email: abuse@ascio.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: ok https://icann.org/epp#ok
Name Server: ALFA.NS.ACTIVE24.CZ
Name Server: BETA.NS.ACTIVE24.CZ
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-10-18T19:58:18Z

cerva.com server information

Servers Location

cerva.com desktop page speed rank

Last tested: 2019-06-17

Desktop Speed Bad

34/100

cerva.com Desktop Speed Test Quick Summary

priority - 93Optimize images

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Optimize the following images to reduce their size by 908.3KiB (63% reduction).

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priority - 47Leverage 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://ifirmy.cz/pxstats/piwik.js (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/big_check.png (expiration not specified)
https://www.cerva.com/external/components/newslett…ssets/cerva-img-en.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/close-cross.png (expiration not specified)
https://www.cerva.com/external/components/newslett…/close_button_icon.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/send-icon.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/titles/EN-2.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/js/TimelineMax.min.js (expiration not specified)
https://www.cerva.com/external/components/newsletter/js/TweenMax.min.js (expiration not specified)
https://www.cerva.com/media/files/0/8/file5c04daaa3d580.jpg (expiration not specified)
https://www.cerva.com/media/files/3/c/file5be943f7539c3.jpg (expiration not specified)
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https://www.cerva.com/media/files/6/3/file5be5a416d0936.jpg (expiration not specified)
https://www.cerva.com/media/files/7/4/file5be97be14ab47.jpg (expiration not specified)
https://www.cerva.com/media/files/a/c/file5be5a416c69ca.jpg (expiration not specified)
https://www.cerva.com/media/files/c/2/file5c3e00d61742c.jpg (expiration not specified)
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https://www.cerva.com/media/files/e/5/file5be5a416ca35e.jpg (expiration not specified)
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https://www.cerva.com/media/products/d/e/de25ec14f…0735cfd3a201cedddd.png (expiration not specified)
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https://www.cerva.com/media/products/f/e/fe4cda330…6ae54032516dabe2c0.png (expiration not specified)
https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
https://www.cerva.com/theme/web/css/print.css (expiration not specified)
https://www.cerva.com/theme/web/css/responsive.css (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_cs.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_de.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_en.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_fr.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_hu.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_nl.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_pl.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_ro.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_ru.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_sk.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_tr.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/media/index_mapa.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_header.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_links_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_links_submenu_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_sidemenu_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_sidemenu_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_big_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_big_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_grey_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_grey_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_orange_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_orange_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_link.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_link2_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_link_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_slideshow_left.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_slideshow_right.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_input_search.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_pin.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_tel.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/logo.png (expiration not specified)
https://www.cerva.com/theme/web/js/script.js (expiration not specified)
https://www.google.com/recaptcha/api.js?onload=cap…llback&render=explicit (5 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KKJB68 (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 30Enable 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 292.2KiB (71% reduction).

Compressing https://www.cerva.com/external/components/newsletter/js/TweenMax.min.js could save 72.6KiB (66% reduction).
Compressing https://ifirmy.cz/pxstats/piwik.js could save 43.1KiB (66% reduction).
Compressing https://www.cerva.com/theme/web/css/style.css?1 could save 40.2KiB (83% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.cycle.all.js?1 could save 37.5KiB (73% reduction).
Compressing https://www.cerva.com/en could save 24.4KiB (76% reduction).
Compressing https://www.cerva.com/external/components/newsletter/js/TimelineMax.min.js could save 14KiB (71% reduction).
Compressing https://www.cerva.com/external/components/newsletter/css/style.css?v=1.5 could save 10.7KiB (80% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.fancybox-1.3.4.pack.js?1 could save 9.8KiB (64% reduction).
Compressing https://www.cerva.com/external/components/newsletter/js/script.js?v=1.2 could save 9.6KiB (67% reduction).
Compressing https://www.cerva.com/theme/web/css/responsive.css could save 7.2KiB (79% reduction).
Compressing https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css could save 6.9KiB (79% reduction).
Compressing https://www.cerva.com/theme/shared/js/netteForms.js?1 could save 5.9KiB (71% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.easing-1.3.pack.js?1 could save 4.4KiB (67% reduction).
Compressing https://www.cerva.com/theme/web/js/script.js could save 1.8KiB (75% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.ajaxform.js?1 could save 1.4KiB (65% reduction).
Compressing https://www.cerva.com/theme/web/css/print.css could save 890B (63% reduction).
Compressing https://www.cerva.com/theme/shared/js/ajax.js?1 could save 730B (63% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.nette.js?1 could save 608B (55% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.mousewheel-3.0.4.pack.js?1 could save 602B (48% reduction).

priority - 18Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js
https://www.cerva.com/theme/shared/js/netteForms.js?1
https://www.cerva.com/theme/shared/js/ajax.js?1
https://www.cerva.com/theme/shared/js/jquery.ajaxform.js?1
https://www.cerva.com/theme/shared/js/jquery.nette.js?1
https://www.cerva.com/theme/shared/js/jquery.fancybox-1.3.4.pack.js?1
https://www.cerva.com/theme/shared/js/jquery.cycle.all.js?1
https://www.cerva.com/theme/shared/js/jquery.easing-1.3.pack.js?1
https://www.cerva.com/theme/shared/js/jquery.mousewheel-3.0.4.pack.js?1
https://www.cerva.com/theme/web/js/script.js
https://www.google.com/recaptcha/api.js?onload=cap…llback&render=explicit
https://www.cerva.com/external/components/newsletter/js/TweenMax.min.js
https://www.cerva.com/external/components/newsletter/js/TimelineMax.min.js
https://www.cerva.com/external/components/newsletter/js/script.js?v=1.2

Optimize CSS Delivery of the following:

https://www.cerva.com/theme/web/css/style.css?1
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Exo+2:300,400,500,600
https://www.cerva.com/external/components/newsletter/css/style.css?v=1.5
https://www.cerva.com/theme/web/css/responsive.css
https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css

priority - 12Avoid landing page redirects

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://cerva.com/
https://cerva.com/
https://www.cerva.com/
https://www.cerva.com/en

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 29.1KiB (33% reduction).

Minifying https://www.cerva.com/theme/shared/js/jquery.cycle.all.js?1 could save 18KiB (36% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.easing-1.3.pack.js?1 could save 3.4KiB (52% reduction).
Minifying https://www.cerva.com/external/components/newsletter/js/script.js?v=1.2 could save 2.2KiB (16% reduction).
Minifying https://www.cerva.com/theme/shared/js/netteForms.js?1 could save 1.9KiB (24% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.ajaxform.js?1 could save 1.1KiB (49% reduction).
Minifying https://www.cerva.com/theme/web/js/script.js could save 936B (38% reduction).
Minifying https://www.cerva.com/theme/shared/js/ajax.js?1 could save 643B (55% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.nette.js?1 could save 575B (52% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.mousewheel-3.0.4.pack.js?1 could save 362B (29% reduction).

priority - 2Minify 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 18.5KiB (23% reduction).

Minifying https://www.cerva.com/theme/web/css/style.css?1 could save 10.6KiB (22% reduction).
Minifying https://www.cerva.com/theme/web/css/responsive.css could save 3.5KiB (39% reduction).
Minifying https://www.cerva.com/external/components/newsletter/css/style.css?v=1.5 could save 2.5KiB (19% reduction).
Minifying https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css could save 1.7KiB (20% reduction).
Minifying https://www.cerva.com/theme/web/css/print.css could save 217B (16% reduction).

priority - 1Minify 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 7.2KiB (23% reduction).

Minifying https://www.cerva.com/en could save 7.2KiB (23% reduction).

cerva.com Desktop Resource Breakdown

Total Resources	169
Number of Hosts	16
Static Resources	140
JavaScript Resources	35
CSS Resources	12

cerva.com mobile page speed rank

Last tested: 2018-12-30

Mobile Speed Bad

22/100

cerva.com Mobile Speed Test Quick Summary

priority - 105Optimize images

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

Optimize the following images to reduce their size by 1MiB (59% reduction).

Compressing https://www.cerva.com/media/files/1/f/file5c07d2859aaf1.jpg could save 60.7KiB (30% reduction).
Compressing https://www.cerva.com/external/components/newsletter/assets/background.jpg could save 43KiB (61% reduction).
Compressing https://www.cerva.com/media/files/0/8/file5c04daaa3d580.jpg could save 41.9KiB (30% reduction).
Compressing https://www.cerva.com/media/files/5/9/file5c04da7a4ef95.jpg could save 41.1KiB (35% reduction).
Compressing https://www.cerva.com/media/files/7/5/file5be5ac724b257.jpg could save 34.8KiB (28% reduction).
Compressing https://www.cerva.com/media/products/f/7/f700d4c27…fd4bee6e8b09d0ea79.png could save 31.5KiB (94% reduction).
Compressing https://www.cerva.com/media/products/d/e/de25ec14f…0735cfd3a201cedddd.png could save 30.9KiB (92% reduction).
Compressing https://www.cerva.com/media/products/0/b/0b52b9253…c67a2c888d6dcc56b8.png could save 28KiB (83% reduction).
Compressing https://www.cerva.com/media/products/f/e/fe4cda330…6ae54032516dabe2c0.png could save 27.6KiB (82% reduction).
Compressing https://www.cerva.com/media/products/6/f/6fb49e8d2…c0ee6fef46cace6116.png could save 25.2KiB (83% reduction).
Compressing https://www.cerva.com/media/products/5/e/5e397eac8…4e4b943fa4f49d2e47.png could save 24.1KiB (93% reduction).
Compressing https://www.cerva.com/media/products/0/2/0247c478b…dcaf94cb9c877034ae.png could save 23.2KiB (92% reduction).
Compressing https://www.cerva.com/media/products/b/b/bb13d258e…dcac3e4451c7f4ba35.png could save 22.5KiB (89% reduction).
Compressing https://www.cerva.com/media/files/7/4/file5be97be14ab47.jpg could save 21.2KiB (70% reduction).
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Compressing https://www.cerva.com/media/products/1/a/1afa59827…de2b84c3fb079b9d32.png could save 20.3KiB (86% reduction).
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Compressing https://www.cerva.com/media/products/4/f/4fb1d64d5…bf7ceadf31048ad21a.png could save 16.6KiB (87% reduction).
Compressing https://www.cerva.com/media/products/f/2/f2e0f6a7b…317b81e77988cb24c0.png could save 16.4KiB (83% reduction).
Compressing https://www.cerva.com/media/products/b/7/b756beb2e…f67053093b4e671d20.png could save 16.1KiB (90% reduction).
Compressing https://www.cerva.com/media/products/8/f/8f67ec62b…c321af7857636b0ba2.png could save 15.9KiB (86% reduction).
Compressing https://www.cerva.com/media/products/d/e/defdaf6c1…96f242d6a57ec7f8eb.png could save 15.7KiB (88% reduction).
Compressing https://www.cerva.com/media/products/2/7/2755aa3c2…a10af7a916e46fc143.png could save 15.7KiB (91% reduction).
Compressing https://www.cerva.com/media/products/2/3/233fba5e4…33242f89bfda2dcc16.png could save 15.7KiB (85% reduction).
Compressing https://www.cerva.com/media/products/5/1/518161a42…c7b9df1b1436c28b54.png could save 15.6KiB (82% reduction).
Compressing https://www.cerva.com/media/files/6/3/file5be5a416d0936.jpg could save 15.5KiB (67% reduction).
Compressing https://www.cerva.com/media/products/b/a/bac4f33f5…503ab1d261da1aa7c8.png could save 15.3KiB (86% reduction).
Compressing https://www.cerva.com/media/products/e/1/e1b634107…0ffd535e70e52e0f62.png could save 15.3KiB (89% reduction).
Compressing https://www.cerva.com/media/products/2/a/2a356da53…9f917619caf370fb75.png could save 14.8KiB (86% reduction).
Compressing https://www.cerva.com/media/files/3/c/file5be943f7539c3.jpg could save 14.6KiB (65% reduction).
Compressing https://www.cerva.com/media/products/5/c/5c6bd8f7b…f6adef3ea33828b3ec.png could save 14.4KiB (81% reduction).
Compressing https://www.cerva.com/media/products/6/a/6ad1b7e16…1ed0b5a6b7c58bdda0.png could save 14.2KiB (83% reduction).
Compressing https://www.cerva.com/media/files/e/5/file5be5a416ca35e.jpg could save 13.7KiB (65% reduction).
Compressing https://www.cerva.com/media/files/a/c/file5be5a416c69ca.jpg could save 13.1KiB (66% reduction).
Compressing https://scontent-mia3-2.xx.fbcdn.net/v/t45.1600-4/…6de21ee0f9&oe=5C91E69D could save 12.9KiB (34% reduction).
Compressing https://www.cerva.com/media/products/b/1/b13c38d7a…62987ccea8ee12490d.png could save 12.6KiB (83% reduction).
Compressing https://www.cerva.com/media/products/3/c/3cb4e0392…9e44136e286b52102f.png could save 12.4KiB (81% reduction).
Compressing https://www.cerva.com/media/products/6/5/65f1fe9e7…3633f308f1ab4f95d9.png could save 11.9KiB (79% reduction).
Compressing https://www.cerva.com/media/products/8/2/821d5ca2b…1cc9f783f100534633.png could save 10.9KiB (86% reduction).
Compressing https://www.cerva.com/media/products/1/b/1b580e468…af69262dd24b4fcc27.png could save 10.5KiB (75% reduction).
Compressing https://www.cerva.com/media/products/8/1/818414aa8…c1a81845fb176bcb27.png could save 10.5KiB (87% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yz/r/io3srdgQDB-.png could save 10KiB (44% reduction).
Compressing https://www.cerva.com/media/products/7/8/78ebbf0d2…66fb8ace27c176e66d.png could save 9.8KiB (77% reduction).
Compressing https://www.cerva.com/media/products/5/1/51950c974…abd9405182910def89.png could save 9.3KiB (73% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yH/r/ymaruJl2Pjp.png could save 8.6KiB (37% reduction).
Compressing https://www.cerva.com/theme/web/img/content/media/index_mapa.png could save 8.5KiB (25% reduction).
Compressing https://www.cerva.com/media/products/6/b/6b62751c3…6ffca7cb6ebb82d481.png could save 7.4KiB (82% reduction).
Compressing https://www.cerva.com/media/products/9/0/9049b886a…cb5bcd8dde7187a8d5.png could save 7.3KiB (57% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yX/r/Kvo5FesWVKX.png could save 6.8KiB (37% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/y1/r/D__hj-r-65c.png could save 4.6KiB (40% reduction).
Compressing https://www.cerva.com/external/components/newslett…s/checkbox_empty_y.png could save 3.7KiB (97% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/ico_arrow_link2_hover.png could save 2.8KiB (88% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/ico_arrow_link_hover.png could save 2.7KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/ico_input_search.png could save 2.7KiB (87% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/ico_arrow_hover.png could save 2.7KiB (95% reduction).
Compressing https://www.cerva.com/external/components/newsletter/assets/close-cross.png could save 2.7KiB (92% reduction).
Compressing https://www.cerva.com/external/components/newslett…ssets/close_button.png could save 2.7KiB (90% reduction).
Compressing https://www.cerva.com/external/components/newslett…/close_button_icon.png could save 2.7KiB (93% reduction).
Compressing https://www.cerva.com/external/components/newslett…ets/checkbox_empty.png could save 2.7KiB (96% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_links_submenu_hover.png could save 2.6KiB (94% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_header.png could save 2.6KiB (95% reduction).
Compressing https://www.cerva.com/external/components/newsletter/assets/send-icon.png could save 2.6KiB (88% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_links_hover.png could save 2.6KiB (94% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_big_onclick.png could save 2.6KiB (94% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_big_hover.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_small_orange_onclick.png could save 2.6KiB (94% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_links.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_small_grey_hover.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_small_grey_onclick.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_sidemenu_onclick.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/btn_small_orange_hover.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/bg_sidemenu_hover.png could save 2.6KiB (93% reduction).
Compressing https://www.cerva.com/external/components/newsletter/assets/big_check.png could save 1.3KiB (50% reduction).
Compressing https://www.cerva.com/theme/web/img/layout/logo.png could save 1.1KiB (50% reduction).
Compressing https://www.cerva.com/external/components/newslett…ssets/cerva-img-en.png could save 489B (12% reduction).
Compressing https://scontent-mia3-2.xx.fbcdn.net/v/t1.0-1/p50x…982302f6ab&oe=5CD971C5 could save 411B (35% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yN/r/WgFKRx0VFOG.png could save 279B (22% reduction).
Compressing https://static.xx.fbcdn.net/rsrc.php/v3/yH/r/yNvz5xtKREW.png could save 109B (20% reduction).

priority - 72Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

https://www.cerva.com/theme/web/css/style.css?1
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Exo+2:300,400,500,600
https://www.cerva.com/external/components/newsletter/css/style.css?v=1.4
https://www.cerva.com/theme/web/css/responsive.css
https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css

priority - 70Leverage 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://ifirmy.cz/pxstats/piwik.js (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/background.jpg (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/big_check.png (expiration not specified)
https://www.cerva.com/external/components/newslett…ssets/cerva-img-en.png (expiration not specified)
https://www.cerva.com/external/components/newslett…ets/checkbox_empty.png (expiration not specified)
https://www.cerva.com/external/components/newslett…s/checkbox_empty_y.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/close-cross.png (expiration not specified)
https://www.cerva.com/external/components/newslett…ssets/close_button.png (expiration not specified)
https://www.cerva.com/external/components/newslett…/close_button_icon.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/assets/send-icon.png (expiration not specified)
https://www.cerva.com/external/components/newsletter/js/TimelineMax.min.js (expiration not specified)
https://www.cerva.com/external/components/newsletter/js/TweenMax.min.js (expiration not specified)
https://www.cerva.com/media/files/0/8/file5c04daaa3d580.jpg (expiration not specified)
https://www.cerva.com/media/files/1/f/file5c07d2859aaf1.jpg (expiration not specified)
https://www.cerva.com/media/files/3/c/file5be943f7539c3.jpg (expiration not specified)
https://www.cerva.com/media/files/5/9/file5c04da7a4ef95.jpg (expiration not specified)
https://www.cerva.com/media/files/6/3/file5be5a416d0936.jpg (expiration not specified)
https://www.cerva.com/media/files/7/4/file5be97be14ab47.jpg (expiration not specified)
https://www.cerva.com/media/files/7/5/file5be5ac724b257.jpg (expiration not specified)
https://www.cerva.com/media/files/a/c/file5be5a416c69ca.jpg (expiration not specified)
https://www.cerva.com/media/files/e/5/file5be5a416ca35e.jpg (expiration not specified)
https://www.cerva.com/media/products/0/2/0247c478b…dcaf94cb9c877034ae.png (expiration not specified)
https://www.cerva.com/media/products/0/b/0b52b9253…c67a2c888d6dcc56b8.png (expiration not specified)
https://www.cerva.com/media/products/1/a/1afa59827…de2b84c3fb079b9d32.png (expiration not specified)
https://www.cerva.com/media/products/1/b/1b580e468…af69262dd24b4fcc27.png (expiration not specified)
https://www.cerva.com/media/products/2/3/233fba5e4…33242f89bfda2dcc16.png (expiration not specified)
https://www.cerva.com/media/products/2/6/263788952…0ec8e6dce5339a7c93.png (expiration not specified)
https://www.cerva.com/media/products/2/7/2755aa3c2…a10af7a916e46fc143.png (expiration not specified)
https://www.cerva.com/media/products/2/a/2a356da53…9f917619caf370fb75.png (expiration not specified)
https://www.cerva.com/media/products/3/c/3cb4e0392…9e44136e286b52102f.png (expiration not specified)
https://www.cerva.com/media/products/4/f/4fb1d64d5…bf7ceadf31048ad21a.png (expiration not specified)
https://www.cerva.com/media/products/5/1/518161a42…c7b9df1b1436c28b54.png (expiration not specified)
https://www.cerva.com/media/products/5/1/51950c974…abd9405182910def89.png (expiration not specified)
https://www.cerva.com/media/products/5/c/5c6bd8f7b…f6adef3ea33828b3ec.png (expiration not specified)
https://www.cerva.com/media/products/5/e/5e397eac8…4e4b943fa4f49d2e47.png (expiration not specified)
https://www.cerva.com/media/products/6/4/64828954a…e7f2e080269765167a.png (expiration not specified)
https://www.cerva.com/media/products/6/5/65f1fe9e7…3633f308f1ab4f95d9.png (expiration not specified)
https://www.cerva.com/media/products/6/a/6ad1b7e16…1ed0b5a6b7c58bdda0.png (expiration not specified)
https://www.cerva.com/media/products/6/b/6b62751c3…6ffca7cb6ebb82d481.png (expiration not specified)
https://www.cerva.com/media/products/6/f/6fb49e8d2…c0ee6fef46cace6116.png (expiration not specified)
https://www.cerva.com/media/products/7/8/78ebbf0d2…66fb8ace27c176e66d.png (expiration not specified)
https://www.cerva.com/media/products/8/1/818414aa8…c1a81845fb176bcb27.png (expiration not specified)
https://www.cerva.com/media/products/8/2/821d5ca2b…1cc9f783f100534633.png (expiration not specified)
https://www.cerva.com/media/products/8/f/8f67ec62b…c321af7857636b0ba2.png (expiration not specified)
https://www.cerva.com/media/products/9/0/9049b886a…cb5bcd8dde7187a8d5.png (expiration not specified)
https://www.cerva.com/media/products/a/7/a73bb8579…979a7b9e336d354877.png (expiration not specified)
https://www.cerva.com/media/products/b/1/b13c38d7a…62987ccea8ee12490d.png (expiration not specified)
https://www.cerva.com/media/products/b/7/b756beb2e…f67053093b4e671d20.png (expiration not specified)
https://www.cerva.com/media/products/b/a/bac4f33f5…503ab1d261da1aa7c8.png (expiration not specified)
https://www.cerva.com/media/products/b/b/bb13d258e…dcac3e4451c7f4ba35.png (expiration not specified)
https://www.cerva.com/media/products/d/e/de25ec14f…0735cfd3a201cedddd.png (expiration not specified)
https://www.cerva.com/media/products/d/e/defdaf6c1…96f242d6a57ec7f8eb.png (expiration not specified)
https://www.cerva.com/media/products/e/1/e1b634107…0ffd535e70e52e0f62.png (expiration not specified)
https://www.cerva.com/media/products/f/2/f2e0f6a7b…317b81e77988cb24c0.png (expiration not specified)
https://www.cerva.com/media/products/f/4/f4b6197c2…194107fc375ff714f4.png (expiration not specified)
https://www.cerva.com/media/products/f/7/f700d4c27…fd4bee6e8b09d0ea79.png (expiration not specified)
https://www.cerva.com/media/products/f/e/fe4cda330…6ae54032516dabe2c0.png (expiration not specified)
https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
https://www.cerva.com/theme/web/css/print.css (expiration not specified)
https://www.cerva.com/theme/web/css/responsive.css (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_cs.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_de.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_en.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_fr.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_hu.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_nl.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_pl.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_ro.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_ru.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_sk.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/flags/flag_tr.png (expiration not specified)
https://www.cerva.com/theme/web/img/content/media/index_mapa.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_header.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_links.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_links_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_links_submenu_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_sidemenu_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/bg_sidemenu_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_big_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_big_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_grey_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_grey_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_orange_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/btn_small_orange_onclick.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_link2_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_arrow_link_hover.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/ico_input_search.png (expiration not specified)
https://www.cerva.com/theme/web/img/layout/logo.png (expiration not specified)
https://www.cerva.com/theme/web/js/script.js (expiration not specified)
https://www.google.com/recaptcha/api.js?onload=cap…llback&render=explicit (5 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KKJB68 (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 43Avoid landing page redirects

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://cerva.com/
https://cerva.com/
https://www.cerva.com/
https://www.cerva.com/en

priority - 30Enable 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 290.3KiB (71% reduction).

Compressing https://www.cerva.com/external/components/newsletter/js/TweenMax.min.js could save 72.6KiB (66% reduction).
Compressing https://ifirmy.cz/pxstats/piwik.js could save 42.2KiB (65% reduction).
Compressing https://www.cerva.com/theme/web/css/style.css?1 could save 39.8KiB (83% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.cycle.all.js?1 could save 37.5KiB (73% reduction).
Compressing https://www.cerva.com/en could save 23.8KiB (77% reduction).
Compressing https://www.cerva.com/external/components/newsletter/js/TimelineMax.min.js could save 14KiB (71% reduction).
Compressing https://www.cerva.com/external/components/newsletter/css/style.css?v=1.4 could save 10.7KiB (80% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.fancybox-1.3.4.pack.js?1 could save 9.8KiB (64% reduction).
Compressing https://www.cerva.com/external/components/newsletter/js/script.js?v=1.1 could save 9.6KiB (67% reduction).
Compressing https://www.cerva.com/theme/web/css/responsive.css could save 7.2KiB (79% reduction).
Compressing https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css could save 6.9KiB (79% reduction).
Compressing https://www.cerva.com/theme/shared/js/netteForms.js?1 could save 5.9KiB (71% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.easing-1.3.pack.js?1 could save 4.4KiB (67% reduction).
Compressing https://www.cerva.com/theme/web/js/script.js could save 1.8KiB (75% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.ajaxform.js?1 could save 1.4KiB (65% reduction).
Compressing https://www.cerva.com/theme/web/css/print.css could save 890B (63% reduction).
Compressing https://www.cerva.com/theme/shared/js/ajax.js?1 could save 730B (63% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.nette.js?1 could save 608B (55% reduction).
Compressing https://www.cerva.com/theme/shared/js/jquery.mousewheel-3.0.4.pack.js?1 could save 602B (48% 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 28.9KiB (33% reduction).

Minifying https://www.cerva.com/theme/shared/js/jquery.cycle.all.js?1 could save 18KiB (36% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.easing-1.3.pack.js?1 could save 3.4KiB (52% reduction).
Minifying https://www.cerva.com/external/components/newsletter/js/script.js?v=1.1 could save 2KiB (15% reduction).
Minifying https://www.cerva.com/theme/shared/js/netteForms.js?1 could save 1.9KiB (24% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.ajaxform.js?1 could save 1.1KiB (49% reduction).
Minifying https://www.cerva.com/theme/web/js/script.js could save 936B (38% reduction).
Minifying https://www.cerva.com/theme/shared/js/ajax.js?1 could save 643B (55% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.nette.js?1 could save 575B (52% reduction).
Minifying https://www.cerva.com/theme/shared/js/jquery.mousewheel-3.0.4.pack.js?1 could save 362B (29% reduction).

priority - 2Minify 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 18.3KiB (23% reduction).

Minifying https://www.cerva.com/theme/web/css/style.css?1 could save 10.4KiB (22% reduction).
Minifying https://www.cerva.com/theme/web/css/responsive.css could save 3.5KiB (39% reduction).
Minifying https://www.cerva.com/external/components/newsletter/css/style.css?v=1.4 could save 2.5KiB (19% reduction).
Minifying https://www.cerva.com/theme/shared/css/fancybox/jquery.fancybox-1.3.4.css could save 1.7KiB (20% reduction).
Minifying https://www.cerva.com/theme/web/css/print.css could save 217B (16% reduction).

priority - 1Minify 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 7KiB (23% reduction).

Minifying https://www.cerva.com/en could save 7KiB (23% reduction).

cerva.com Mobile Resource Breakdown

Total Resources	214
Number of Hosts	15
Static Resources	187
JavaScript Resources	64
CSS Resources	21

cerva.com mobile page usability

Last tested: 2018-12-30

Mobile Usability Good

95/100

cerva.com Mobile Usability Test Quick Summary

priority - 4Size 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 <input type="text" class="newsletter-email"> is close to 1 other tap targets.

The tap target <form id="frm-search"></form> is close to 2 other tap targets.

The tap target <form id="frm-search"></form> is close to 1 other tap targets.

The tap target <label for="frmsearch-search"> is close to 2 other tap targets.

The tap target <input id="frmsearch-search" type="text" name="search" class="text"> is close to 1 other tap targets.

The tap target <input id="frmsearch-submit" type="submit" name="submit_" class="btn btn-primary"> is close to 3 other tap targets.

The tap target <a href="/en/contacts">Contacts</a> is close to 1 other tap targets.

cerva.com HTML validation

Errors

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Line: 6 Column: 5 - 60
"...8" /> <meta http-equiv="X-UA-Compatible" content="chrome=1" /> <..."

Bad value “screen, projection, handheld, tv” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.

Line: 19 Column: 5 - 107
"...l" /> <link rel="stylesheet" href="/theme/web/css/responsive.css" media="screen, projection, handheld, tv" /> <..." Line: 39 Column: 5 - 107
"...ipt> <link rel="stylesheet" href="/theme/web/css/newsletter.css" media="screen, projection, handheld, tv" /> <..."

No space between attributes.

Line: 43 Column: - 47
"..." sizes="57x57"href="/apple-to..."

Duplicate ID “index_map_more_btn”.

Line: 204 Column: 13 - 116
"... <a href="http://catalogue.cerva.com/books/rwxv/" class="a_btn" id="index_map_more_btn" target="_blank">Více &..." Line: 253 Column: 17 - 93
"... <a href="/prodejci" class="a_btn a_btn_small_orange" id="index_map_more_btn">Více &..."

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

Line: 252 Column: 17 - 88
"... <img src="/theme/web/img/content/media/index_mapa.png" id="index_map" /> ..."

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

Line: 257 Column: 17 - 408
"... <iframe src="https://www.facebook.com/plugins/page.php?href=https%3A%2F%2Fwww.facebook.com%2Fcervagroup%2F&tabs=timeline&width=290&height=210&small_header=false&adapt_container_width=true&hide_cover=false&show_facepile=true&appId=377865939217395" width="290" height="400" style="border:none;overflow:hidden; margin-top: 280px;" scrolling="no" frameborder="0" allowTransparency="true"></iframe> ..."

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

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

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

Line: 278 Column: 8 - 32
"...a> <p class="error-message"></p> ..."

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 7 Column: 5 - 110
"...1" /> <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" /> ..."

The first occurrence of ID “index_map_more_btn” was here.

Line: 201 Column: 13 - 115
"... <a href="http://catalogue.cerva.com/books/unff" class="a_btn" id="index_map_more_btn" target="_blank">Více &..." Line: 201 Column: 13 - 115
"... <a href="http://catalogue.cerva.com/books/unff" class="a_btn" id="index_map_more_btn" target="_blank">Více &..."

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cerva.com 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.

cerva.com 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.

CERVA.COM Choose your country | CERVA

cerva.com Website Information

Advertisement

cerva.com Alexa Rank

cerva.com whois

cerva.com server information

Servers Location

cerva.com desktop page speed rank

cerva.com Desktop Speed Test Quick Summary

priority - 93Optimize images

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

Optimize the following images to reduce their size by 908.3KiB (63% reduction).

priority - 47Leverage 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 - 30Enable 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 292.2KiB (71% reduction).

priority - 18Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 12Avoid landing page redirects

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.

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 29.1KiB (33% reduction).

priority - 2Minify 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 18.5KiB (23% reduction).

priority - 1Minify 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 7.2KiB (23% reduction).

cerva.com Desktop Resource Breakdown

cerva.com mobile page speed rank

cerva.com Mobile Speed Test Quick Summary

priority - 105Optimize images

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

Optimize the following images to reduce their size by 1MiB (59% reduction).

priority - 72Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 14 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 70Leverage 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 - 43Avoid landing page redirects

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.

priority - 30Enable 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 290.3KiB (71% 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 28.9KiB (33% reduction).

priority - 2Minify 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 18.3KiB (23% reduction).

priority - 1Minify 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 7KiB (23% reduction).

cerva.com Mobile Resource Breakdown

cerva.com mobile page usability

cerva.com Mobile Usability Test Quick Summary

priority - 4Size 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.

cerva.com HTML validation

Errors

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Bad value “screen, projection, handheld, tv” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.

No space between attributes.

Duplicate ID “index_map_more_btn”.

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

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.

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

Warnings