VACLAVHAVEL-LIBRARY.ORG Knihovna Václava Havla


vaclavhavel-library.org website information.

vaclavhavel-library.org domain name is registered by .ORG top-level domain registry. See the other sites registred in .ORG domain zone.

Following name servers are specified for vaclavhavel-library.org domain:

  • ns2.ignum.cz
  • ns1.ignum.com

and probably website vaclavhavel-library.org is hosted by Hetzner Online GmbH web hosting company. Check the complete list of other most popular websites hosted by Hetzner Online GmbH hosting company.

According to Alexa traffic rank the highest website vaclavhavel-library.org position was 243592 (in the world). The lowest Alexa rank position was 998398. Now website vaclavhavel-library.org ranked in Alexa database as number 708238 (in the world).

Website vaclavhavel-library.org Desktop speed measurement score (38/100) is better than the results of 13.38% of other sites shows that the page desktop performance can be improved.

vaclavhavel-library.org Mobile usability score (97/100) is better than the results of 49.9% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of vaclavhavel-library.org (34/100) is better than the results of 12.98% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Nov-26-2024 708,238-4,641
Nov-25-2024 703,59715,508
Nov-24-2024 719,105-20,525
Nov-23-2024 698,580-759
Nov-22-2024 697,821-1,752
Nov-21-2024 696,0697,642
Nov-20-2024 703,711-4,516

Advertisement

vaclavhavel-library.org Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.



vaclavhavel-library.org whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.


Domain Name: vaclavhavel-library.org
Registry Domain ID: 9a6a0e5241694603b71f5a9430ace326-LROR
Registrar WHOIS Server: whois.joker.com
Registrar URL: http://www.joker.com
Updated Date: 2022-04-12T13:23:24Z
Creation Date: 2004-04-10T08:40:56Z
Registry Expiry Date: 2023-04-10T08:40:56Z
Registrar: CSL Computer Service Langenbach GmbH d/b/a joker.com a German GmbH
Registrar IANA ID: 113
Registrar Abuse Contact Email: abuse@joker.com
Registrar Abuse Contact Phone: +49.21186767447
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Knihovna Vaclava Havla
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: --
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: CZ
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns1.ignum.com
Name Server: ns2.ignum.cz
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-07-31T00:27:37Z

vaclavhavel-library.org server information

Servers Location

IP Address
91.239.201.14
Region
Praha
City
Hlavni mesto

vaclavhavel-library.org desktop page speed rank

Last tested: 2019-02-09


Desktop Speed Bad
38/100

vaclavhavel-library.org Desktop Speed Test Quick Summary


priority - 160 Optimize images

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

Optimize the following images to reduce their size by 1.5MiB (65% reduction).

Compressing https://www.vaclavhavel.cz/img/events/01061b.jpg could save 130.1KiB (78% reduction).
Compressing https://www.vaclavhavel.cz/img/_/dialogue-illu.jpg could save 80.1KiB (75% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014900_t.jpg could save 45.4KiB (85% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014895_t.jpg could save 42.3KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/img/_/past-exhibitions.jpg could save 39.7KiB (85% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014901_t.jpg could save 34KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014877_t.jpg could save 32.1KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00019t.jpg could save 31KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014875_t.jpg could save 29.9KiB (77% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014897_t.jpg could save 28.6KiB (73% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00020t.jpg could save 27.5KiB (68% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00106t.jpg could save 27.4KiB (94% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00001t.jpg could save 26.8KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00013t.jpg could save 26.5KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00018t.jpg could save 25.7KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014902_t.jpg could save 25.6KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/img/file/015673_t.jpg could save 23.6KiB (80% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00002t.jpg could save 23.3KiB (93% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014899_t.jpg could save 23KiB (77% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00003t.jpg could save 22.9KiB (95% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00014t.jpg could save 21.2KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00016t.jpg could save 21KiB (72% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00020t.jpg could save 20.7KiB (93% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00010t.jpg could save 20.7KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00002t.jpg could save 20.5KiB (73% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00050t.jpg could save 20.4KiB (95% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00012t.jpg could save 20.2KiB (67% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00052t.jpg could save 20.2KiB (93% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00010t.jpg could save 20KiB (94% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00014t.jpg could save 19.3KiB (93% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00055t.jpg could save 18.8KiB (92% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00007t.jpg could save 18.7KiB (93% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00054t.jpg could save 18.6KiB (93% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00009t.jpg could save 18.1KiB (92% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00051t.jpg could save 18.1KiB (93% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00006t.jpg could save 17.9KiB (71% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00056t.jpg could save 17.8KiB (92% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00017t.jpg could save 17.8KiB (70% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00004t.jpg could save 16.5KiB (91% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00008t.jpg could save 16.1KiB (65% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00011t.jpg could save 15.8KiB (93% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00053t.jpg could save 15.2KiB (91% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00011t.jpg could save 14.4KiB (73% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00018t.jpg could save 14.3KiB (91% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00019t.jpg could save 14.1KiB (92% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00017t.jpg could save 14.1KiB (92% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00013t.jpg could save 13.9KiB (91% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00093t.jpg could save 13.1KiB (39% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014904_t.jpg could save 12.9KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01448t.jpg could save 12.1KiB (38% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00024t.jpg could save 11.8KiB (91% reduction).
Compressing https://www.vaclavhavel.cz/img/_/dokumentacni-centrum-kolaz.jpg could save 11.5KiB (16% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00005t.jpg could save 11.3KiB (66% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00004t.jpg could save 11.3KiB (61% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01041m.jpg could save 10.8KiB (69% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00096t.jpg could save 9.8KiB (41% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00094t.jpg could save 9.6KiB (31% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00009t.jpg could save 9.2KiB (64% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01450t.jpg could save 8.8KiB (43% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00057t.jpg could save 8.7KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00015t.jpg could save 8.6KiB (59% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01452t.jpg could save 8.6KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00007t.jpg could save 8.2KiB (65% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00091t.jpg could save 8.1KiB (84% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01458t.jpg could save 7.5KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01456t.jpg could save 7.5KiB (27% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00044t.jpg could save 7.4KiB (84% reduction).
Compressing and resizing https://www.vaclavhavel.cz/elearning/img/timeline/00049t.jpg could save 7.1KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01449t.jpg could save 7.1KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01459t.jpg could save 7.1KiB (35% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014869_t.jpg could save 6.9KiB (48% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00097t.jpg could save 6.7KiB (45% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01038m.jpg could save 6.6KiB (33% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00089t.jpg could save 6.5KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00091t.jpg could save 6.2KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00095t.jpg could save 6.2KiB (26% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014873_t.jpg could save 5.9KiB (50% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00092t.jpg could save 5.7KiB (35% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00088t.jpg could save 4.9KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00003t.jpg could save 4.8KiB (55% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01457t.jpg could save 4.6KiB (23% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014871_t.jpg could save 4.5KiB (41% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01454t.jpg could save 4.4KiB (25% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00098t.jpg could save 4.3KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014870_t.jpg could save 4.3KiB (40% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01453t.jpg could save 4.2KiB (23% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01039m.jpg could save 3.9KiB (36% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00087t.jpg could save 3.8KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00090t.jpg could save 3.8KiB (45% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01455t.jpg could save 3.4KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01042m.jpg could save 3.3KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014907_t.jpg could save 3.2KiB (25% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014903_t.jpg could save 2.7KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01451t.jpg could save 2.6KiB (33% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014905_t.jpg could save 2.2KiB (20% reduction).
Compressing https://www.vaclavhavel.cz/img/file/015498_t.jpg could save 1.9KiB (21% reduction).
Compressing https://yt3.ggpht.com/-8XewFve7800/AAAAAAAAAAI/AAA…rj-c0xffffff/photo.jpg could save 882B (26% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014906_t.jpg could save 771B (13% reduction).

priority - 10 Reduce server response time

In our test, your server responded in 1.2 seconds.

There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.

priority - 7 Leverage browser caching

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

Leverage browser caching for the following cacheable resources:

https://www.vaclavhavel.cz/img/ico-menu-pos-333.svg (30 seconds)
https://www.vaclavhavel.cz/img/ico-search-white.svg (30 seconds)
https://www.vaclavhavel.cz/img/ico-search.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-angle-up.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-cm.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-fb.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-fk.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-ga.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-ig.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-tw.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-yt.svg (30 seconds)
https://www.vaclavhavel.cz/img/kvh-heart.svg (30 seconds)
https://www.vaclavhavel.cz/img/kvh-title.svg (30 seconds)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

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

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

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.

Optimize CSS Delivery of the following:

https://www.vaclavhavel.cz/s_default.css?u=1549677494

priority - 1 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 11.9KiB (50% reduction).

Compressing https://www.vaclavhavel.cz/img/icons/ico-ig.svg could save 2.8KiB (57% reduction).
Compressing https://www.vaclavhavel.cz/img/kvh-title.svg could save 2KiB (60% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-cm.svg could save 1.3KiB (50% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-yt.svg could save 1.1KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/kvh-heart.svg could save 748B (40% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-menu-pos-333.svg could save 687B (52% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-fk.svg could save 637B (47% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-ga.svg could save 522B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-search-white.svg could save 505B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-tw.svg could save 502B (40% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-search.svg could save 465B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-fb.svg could save 389B (39% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-angle-up.svg could save 352B (39% reduction).

priority - 0 Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 1.7KiB (15% reduction).

Minifying https://www.vaclavhavel.cz/s_widgets.css?u=1549677494 could save 1.1KiB (16% reduction) after compression.
Minifying https://www.vaclavhavel.cz/s_default.css?u=1549677494 could save 637B (14% reduction) after compression.

priority - 0 Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 610B (17% reduction).

Minifying https://www.vaclavhavel.cz/gzip.php?uri=/sys/js-default.js could save 610B (17% reduction) after compression.

vaclavhavel-library.org Desktop Resources

Total Resources144
Number of Hosts10
Static Resources124
JavaScript Resources9
CSS Resources3

vaclavhavel-library.org Desktop Resource Breakdown

vaclavhavel-library.org mobile page speed rank

Last tested: 2019-02-09


Mobile Speed Bad
34/100

vaclavhavel-library.org Mobile Speed Test Quick Summary


priority - 147 Optimize images

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

Optimize the following images to reduce their size by 1.4MiB (60% reduction).

Compressing https://www.vaclavhavel.cz/img/events/01061b.jpg could save 130.1KiB (78% reduction).
Compressing https://www.vaclavhavel.cz/img/_/dialogue-illu.jpg could save 80.1KiB (75% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014900_t.jpg could save 45.4KiB (85% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014895_t.jpg could save 42.3KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/img/_/past-exhibitions.jpg could save 39.7KiB (85% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014901_t.jpg could save 34KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014877_t.jpg could save 32.1KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00019t.jpg could save 31KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014875_t.jpg could save 29.9KiB (77% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014897_t.jpg could save 28.6KiB (73% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00020t.jpg could save 27.5KiB (68% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00001t.jpg could save 26.8KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00013t.jpg could save 26.5KiB (79% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00018t.jpg could save 25.7KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014902_t.jpg could save 25.6KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/img/file/015673_t.jpg could save 23.6KiB (80% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014899_t.jpg could save 23KiB (77% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00014t.jpg could save 21.2KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00016t.jpg could save 21KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00010t.jpg could save 20.7KiB (83% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00106t.jpg could save 20.6KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00002t.jpg could save 20.5KiB (73% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00012t.jpg could save 20.2KiB (67% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00006t.jpg could save 17.9KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00017t.jpg could save 17.8KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00050t.jpg could save 17.3KiB (80% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00003t.jpg could save 17.1KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00002t.jpg could save 16.3KiB (65% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00008t.jpg could save 16.1KiB (65% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00010t.jpg could save 16.1KiB (75% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00052t.jpg could save 15.7KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00054t.jpg could save 14.7KiB (74% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00007t.jpg could save 14.4KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00011t.jpg could save 14.4KiB (73% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00020t.jpg could save 13.6KiB (61% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00051t.jpg could save 13.6KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00093t.jpg could save 13.1KiB (39% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00014t.jpg could save 13KiB (62% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014904_t.jpg could save 12.9KiB (72% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00055t.jpg could save 12.8KiB (63% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00009t.jpg could save 12.5KiB (64% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00056t.jpg could save 12.3KiB (64% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01448t.jpg could save 12.1KiB (38% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00011t.jpg could save 11.9KiB (70% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00004t.jpg could save 11.6KiB (64% reduction).
Compressing https://www.vaclavhavel.cz/img/_/dokumentacni-centrum-kolaz.jpg could save 11.5KiB (16% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00005t.jpg could save 11.3KiB (66% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00004t.jpg could save 11.3KiB (61% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00053t.jpg could save 11KiB (66% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01041m.jpg could save 10.8KiB (69% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00019t.jpg could save 10.6KiB (69% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00018t.jpg could save 10.5KiB (67% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00017t.jpg could save 10.4KiB (68% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00013t.jpg could save 10.4KiB (68% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00096t.jpg could save 9.8KiB (41% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00094t.jpg could save 9.6KiB (31% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00009t.jpg could save 9.2KiB (64% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00024t.jpg could save 9.2KiB (71% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01450t.jpg could save 8.8KiB (43% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00015t.jpg could save 8.6KiB (59% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01452t.jpg could save 8.6KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00007t.jpg could save 8.2KiB (65% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01458t.jpg could save 7.5KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01456t.jpg could save 7.5KiB (27% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01449t.jpg could save 7.1KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01459t.jpg could save 7.1KiB (35% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014869_t.jpg could save 6.9KiB (48% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00097t.jpg could save 6.7KiB (45% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01038m.jpg could save 6.6KiB (33% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00089t.jpg could save 6.5KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00091t.jpg could save 6.2KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00095t.jpg could save 6.2KiB (26% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014873_t.jpg could save 5.9KiB (50% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00092t.jpg could save 5.7KiB (35% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00088t.jpg could save 4.9KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/partner/00003t.jpg could save 4.8KiB (55% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01457t.jpg could save 4.6KiB (23% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014871_t.jpg could save 4.5KiB (41% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01454t.jpg could save 4.4KiB (25% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00098t.jpg could save 4.3KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014870_t.jpg could save 4.3KiB (40% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01453t.jpg could save 4.2KiB (23% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01039m.jpg could save 3.9KiB (36% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00087t.jpg could save 3.8KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/product/00090t.jpg could save 3.8KiB (45% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01455t.jpg could save 3.4KiB (24% reduction).
Compressing https://www.vaclavhavel.cz/img/news/01042m.jpg could save 3.3KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00057t.jpg could save 3.3KiB (32% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014907_t.jpg could save 3.2KiB (25% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014903_t.jpg could save 2.7KiB (30% reduction).
Compressing https://www.vaclavhavel.cz/img/events/01451t.jpg could save 2.6KiB (33% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014905_t.jpg could save 2.2KiB (20% reduction).
Compressing https://www.vaclavhavel.cz/img/file/015498_t.jpg could save 1.9KiB (21% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00091t.jpg could save 1.8KiB (19% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00044t.jpg could save 1.6KiB (19% reduction).
Compressing https://www.vaclavhavel.cz/elearning/img/timeline/00049t.jpg could save 1.6KiB (19% reduction).
Compressing https://yt3.ggpht.com/-8XewFve7800/AAAAAAAAAAI/AAA…rj-c0xffffff/photo.jpg could save 882B (26% reduction).
Compressing https://www.vaclavhavel.cz/img/file/014906_t.jpg could save 771B (13% reduction).

priority - 24 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 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://www.vaclavhavel.cz/gzip.php?uri=/_lib/js-_all.js
https://www.vaclavhavel.cz/gzip.php?uri=/sys/js-default.js

Optimize CSS Delivery of the following:

https://www.vaclavhavel.cz/s_default.css?u=1549677495
https://www.vaclavhavel.cz/s_widgets.css?u=1549677495

priority - 21 Reduce server response time

In our test, your server responded in 1.6 seconds.

There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.

priority - 11 Leverage browser caching

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

Leverage browser caching for the following cacheable resources:

https://www.vaclavhavel.cz/img/ico-menu-pos-333.svg (30 seconds)
https://www.vaclavhavel.cz/img/ico-search-white.svg (30 seconds)
https://www.vaclavhavel.cz/img/ico-search.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-angle-up.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-cm.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-fb.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-fk.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-ga.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-ig.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-tw.svg (30 seconds)
https://www.vaclavhavel.cz/img/icons/ico-yt.svg (30 seconds)
https://www.vaclavhavel.cz/img/kvh-heart.svg (30 seconds)
https://www.vaclavhavel.cz/img/kvh-title.svg (30 seconds)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 1 Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 11.9KiB (50% reduction).

Compressing https://www.vaclavhavel.cz/img/icons/ico-ig.svg could save 2.8KiB (57% reduction).
Compressing https://www.vaclavhavel.cz/img/kvh-title.svg could save 2KiB (60% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-cm.svg could save 1.3KiB (50% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-yt.svg could save 1.1KiB (46% reduction).
Compressing https://www.vaclavhavel.cz/img/kvh-heart.svg could save 748B (40% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-menu-pos-333.svg could save 687B (52% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-fk.svg could save 637B (47% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-ga.svg could save 522B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-search-white.svg could save 505B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-tw.svg could save 502B (40% reduction).
Compressing https://www.vaclavhavel.cz/img/ico-search.svg could save 465B (42% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-fb.svg could save 389B (39% reduction).
Compressing https://www.vaclavhavel.cz/img/icons/ico-angle-up.svg could save 352B (39% reduction).

priority - 0 Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 1.7KiB (15% reduction).

Minifying https://www.vaclavhavel.cz/s_widgets.css?u=1549677495 could save 1.1KiB (16% reduction) after compression.
Minifying https://www.vaclavhavel.cz/s_default.css?u=1549677495 could save 637B (14% reduction) after compression.

priority - 0 Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 610B (17% reduction).

Minifying https://www.vaclavhavel.cz/gzip.php?uri=/sys/js-default.js could save 610B (17% reduction) after compression.

vaclavhavel-library.org Mobile Resources

Total Resources143
Number of Hosts11
Static Resources125
JavaScript Resources9
CSS Resources3

vaclavhavel-library.org Mobile Resource Breakdown

vaclavhavel-library.org mobile page usability

Last tested: 2019-02-09


Mobile Usability Good
97/100

vaclavhavel-library.org Mobile Usability Test Quick Summary


priority - 2 Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="/cs/index/kale…va-jina-afrika">Pavla Jazairiová:Jiná Afrika</a> and 23 others are close to other tap targets.
The tap target <a href="/cs/index/kale…de-neni-receno">Petr Hruška: Nikdenení řečeno</a> and 10 others are close to other tap targets.
The tap target <a href="/cs/vaclav-havel/spisovatel">spisovatel a d…ista a filozof</a> and 1 others are close to other tap targets.
The tap target <a href="/elearning/img…ine/00050b.jpg" class="wgc-image cboxElement"></a> and 24 others are close to other tap targets.

vaclavhavel-library.org similar domains

Similar domains:
www.vaclavhavel-library.com
www.vaclavhavel-library.net
www.vaclavhavel-library.org
www.vaclavhavel-library.info
www.vaclavhavel-library.biz
www.vaclavhavel-library.us
www.vaclavhavel-library.mobi
www.aclavhavel-library.org
www.vaclavhavel-library.org
www.caclavhavel-library.org
www.vcaclavhavel-library.org
www.cvaclavhavel-library.org
www.faclavhavel-library.org
www.vfaclavhavel-library.org
www.fvaclavhavel-library.org
www.gaclavhavel-library.org
www.vgaclavhavel-library.org
www.gvaclavhavel-library.org
www.baclavhavel-library.org
www.vbaclavhavel-library.org
www.bvaclavhavel-library.org
www.vclavhavel-library.org
www.vqclavhavel-library.org
www.vaqclavhavel-library.org
www.vqaclavhavel-library.org
www.vwclavhavel-library.org
www.vawclavhavel-library.org
www.vwaclavhavel-library.org
www.vsclavhavel-library.org
www.vasclavhavel-library.org
www.vsaclavhavel-library.org
www.vzclavhavel-library.org
www.vazclavhavel-library.org
www.vzaclavhavel-library.org
www.valavhavel-library.org
www.vaxlavhavel-library.org
www.vacxlavhavel-library.org
www.vaxclavhavel-library.org
www.vadlavhavel-library.org
www.vacdlavhavel-library.org
www.vadclavhavel-library.org
www.vaflavhavel-library.org
www.vacflavhavel-library.org
www.vafclavhavel-library.org
www.vavlavhavel-library.org
www.vacvlavhavel-library.org
www.vavclavhavel-library.org
www.vacavhavel-library.org
www.vacpavhavel-library.org
www.vaclpavhavel-library.org
www.vacplavhavel-library.org
www.vacoavhavel-library.org
www.vacloavhavel-library.org
www.vacolavhavel-library.org
www.vackavhavel-library.org
www.vaclkavhavel-library.org
www.vacklavhavel-library.org
www.vaclvhavel-library.org
www.vaclqvhavel-library.org
www.vaclaqvhavel-library.org
www.vaclqavhavel-library.org
www.vaclwvhavel-library.org
www.vaclawvhavel-library.org
www.vaclwavhavel-library.org
www.vaclsvhavel-library.org
www.vaclasvhavel-library.org
www.vaclsavhavel-library.org
www.vaclzvhavel-library.org
www.vaclazvhavel-library.org
www.vaclzavhavel-library.org
www.vaclahavel-library.org
www.vaclachavel-library.org
www.vaclavchavel-library.org
www.vaclacvhavel-library.org
www.vaclafhavel-library.org
www.vaclavfhavel-library.org
www.vaclafvhavel-library.org
www.vaclaghavel-library.org
www.vaclavghavel-library.org
www.vaclagvhavel-library.org
www.vaclabhavel-library.org
www.vaclavbhavel-library.org
www.vaclabvhavel-library.org
www.vaclavavel-library.org
www.vaclavbavel-library.org
www.vaclavhbavel-library.org
www.vaclavgavel-library.org
www.vaclavhgavel-library.org
www.vaclavyavel-library.org
www.vaclavhyavel-library.org
www.vaclavyhavel-library.org
www.vaclavuavel-library.org
www.vaclavhuavel-library.org
www.vaclavuhavel-library.org
www.vaclavjavel-library.org
www.vaclavhjavel-library.org
www.vaclavjhavel-library.org
www.vaclavnavel-library.org
www.vaclavhnavel-library.org
www.vaclavnhavel-library.org
www.vaclavhvel-library.org
www.vaclavhqvel-library.org
www.vaclavhaqvel-library.org
www.vaclavhqavel-library.org
www.vaclavhwvel-library.org
www.vaclavhawvel-library.org
www.vaclavhwavel-library.org
www.vaclavhsvel-library.org
www.vaclavhasvel-library.org
www.vaclavhsavel-library.org
www.vaclavhzvel-library.org
www.vaclavhazvel-library.org
www.vaclavhzavel-library.org
www.vaclavhael-library.org
www.vaclavhacel-library.org
www.vaclavhavcel-library.org
www.vaclavhacvel-library.org
www.vaclavhafel-library.org
www.vaclavhavfel-library.org
www.vaclavhafvel-library.org
www.vaclavhagel-library.org
www.vaclavhavgel-library.org
www.vaclavhagvel-library.org
www.vaclavhabel-library.org
www.vaclavhavbel-library.org
www.vaclavhabvel-library.org
www.vaclavhavl-library.org
www.vaclavhavwl-library.org
www.vaclavhavewl-library.org
www.vaclavhavwel-library.org
www.vaclavhavsl-library.org
www.vaclavhavesl-library.org
www.vaclavhavsel-library.org
www.vaclavhavdl-library.org
www.vaclavhavedl-library.org
www.vaclavhavdel-library.org
www.vaclavhavrl-library.org
www.vaclavhaverl-library.org
www.vaclavhavrel-library.org
www.vaclavhave-library.org
www.vaclavhavep-library.org
www.vaclavhavelp-library.org
www.vaclavhavepl-library.org
www.vaclavhaveo-library.org
www.vaclavhavelo-library.org
www.vaclavhaveol-library.org
www.vaclavhavek-library.org
www.vaclavhavelk-library.org
www.vaclavhavekl-library.org
www.vaclavhavellibrary.org
www.vaclavhavel-ibrary.org
www.vaclavhavel-pibrary.org
www.vaclavhavel-lpibrary.org
www.vaclavhavel-plibrary.org
www.vaclavhavel-oibrary.org
www.vaclavhavel-loibrary.org
www.vaclavhavel-olibrary.org
www.vaclavhavel-kibrary.org
www.vaclavhavel-lkibrary.org
www.vaclavhavel-klibrary.org
www.vaclavhavel-lbrary.org
www.vaclavhavel-lubrary.org
www.vaclavhavel-liubrary.org
www.vaclavhavel-luibrary.org
www.vaclavhavel-ljbrary.org
www.vaclavhavel-lijbrary.org
www.vaclavhavel-ljibrary.org
www.vaclavhavel-lkbrary.org
www.vaclavhavel-likbrary.org
www.vaclavhavel-lobrary.org
www.vaclavhavel-liobrary.org
www.vaclavhavel-lirary.org
www.vaclavhavel-livrary.org
www.vaclavhavel-libvrary.org
www.vaclavhavel-livbrary.org
www.vaclavhavel-ligrary.org
www.vaclavhavel-libgrary.org
www.vaclavhavel-ligbrary.org
www.vaclavhavel-lihrary.org
www.vaclavhavel-libhrary.org
www.vaclavhavel-lihbrary.org
www.vaclavhavel-linrary.org
www.vaclavhavel-libnrary.org
www.vaclavhavel-linbrary.org
www.vaclavhavel-libary.org
www.vaclavhavel-libeary.org
www.vaclavhavel-libreary.org
www.vaclavhavel-liberary.org
www.vaclavhavel-libdary.org
www.vaclavhavel-librdary.org
www.vaclavhavel-libdrary.org
www.vaclavhavel-libfary.org
www.vaclavhavel-librfary.org
www.vaclavhavel-libfrary.org
www.vaclavhavel-libtary.org
www.vaclavhavel-librtary.org
www.vaclavhavel-libtrary.org
www.vaclavhavel-librry.org
www.vaclavhavel-librqry.org
www.vaclavhavel-libraqry.org
www.vaclavhavel-librqary.org
www.vaclavhavel-librwry.org
www.vaclavhavel-librawry.org
www.vaclavhavel-librwary.org
www.vaclavhavel-librsry.org
www.vaclavhavel-librasry.org
www.vaclavhavel-librsary.org
www.vaclavhavel-librzry.org
www.vaclavhavel-librazry.org
www.vaclavhavel-librzary.org
www.vaclavhavel-libray.org
www.vaclavhavel-libraey.org
www.vaclavhavel-librarey.org
www.vaclavhavel-libraery.org
www.vaclavhavel-librady.org
www.vaclavhavel-librardy.org
www.vaclavhavel-libradry.org
www.vaclavhavel-librafy.org
www.vaclavhavel-librarfy.org
www.vaclavhavel-librafry.org
www.vaclavhavel-libraty.org
www.vaclavhavel-librarty.org
www.vaclavhavel-libratry.org
www.vaclavhavel-librar.org
www.vaclavhavel-librart.org
www.vaclavhavel-libraryt.org
www.vaclavhavel-librarg.org
www.vaclavhavel-libraryg.org
www.vaclavhavel-librargy.org
www.vaclavhavel-librarh.org
www.vaclavhavel-libraryh.org
www.vaclavhavel-librarhy.org
www.vaclavhavel-libraru.org
www.vaclavhavel-libraryu.org
www.vaclavhavel-libraruy.org

vaclavhavel-library.org Ping

Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.


vaclavhavel-library.org TRACEROUTE

Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.