HEXLET.IO Programming education: online courses for beginners and advanced students

hexlet.io Website Information

Daily Unique Visits: 4,942

Daily Page Views: 19,768

Income Per Day: $55

Estimated Value: $29,700

This website is located in United States and is using following IP address 104.25.238.104. See the complete list of popular websites hosted in United States.

hexlet.io is registered under .IO top-level domain. Please check other sites in .IO zone.

Website hexlet.io is using the following name servers:

  • kirk.ns.cloudflare.com
  • ulla.ns.cloudflare.com

and is probably hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the full list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.

The highest website hexlet.io position in Alexa rank database was 207670 and the lowest rank position was 309719. Current position of hexlet.io in Alexa rank database is 253944.

Desktop speed score of hexlet.io (78/100) is better than the results of 65.98% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of hexlet.io (92/100) is better than the results of 33.5% of other sites and means that the page is mobile-friendly.

Mobile speed score of hexlet.io (54/100) is better than the results of 41.82% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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hexlet.io 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.


hexlet.io 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: hexlet.io
Registry Domain ID: 2b2fb48946824f1da73034a3977d2640-DONUTS
Registrar WHOIS Server: whois.reg.com
Registrar URL:
Updated Date: 2024-05-26T07:56:07Z
Creation Date: 2014-06-11T07:30:32Z
Registry Expiry Date: 2025-06-11T07:30:32Z
Registrar: Registrar of Domain Names REG.RU LLC
Registrar IANA ID: 1606
Registrar Abuse Contact Email: abuse@reg.ru
Registrar Abuse Contact Phone: +7.4955801111
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: LLC "Hexlet Rus"
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Ulyanovskaya
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: RU
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: kirk.ns.cloudflare.com
Name Server: ulla.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-11-08T13:52:56Z

hexlet.io server information

Servers Location

hexlet.io desktop page speed rank

Last tested: 2019-06-27


Desktop Speed Medium
78/100

hexlet.io Desktop Speed Test Quick Summary


priority - 10Eliminate 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.

Optimize CSS Delivery of the following:

https://cdn2.hexlet.io/assets/application-8b766e66…210a36462946f280fb.css

priority - 9Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://hexlet.io/
https://hexlet.io/
https://ru.hexlet.io/

priority - 3Reduce server response time

In our test, your server responded in 0.33 seconds.

priority - 3Leverage 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.googletagmanager.com/gtag/js?id=UA-1360700-51 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-WK88TH (15 minutes)
https://cdn.wootric.com/wootric-sdk.js (60 minutes)
https://mc.yandex.ru/metrika/advert.gif (60 minutes)
https://mc.yandex.ru/metrika/watch.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 2Optimize images

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

Optimize the following images to reduce their size by 14.7KiB (87% reduction).

Compressing and resizing https://cdn2.hexlet.io/assets/welcome_testimonials…c9d350ccfa83bf27c1.jpg could save 14.7KiB (87% reduction).

hexlet.io Desktop Resource Breakdown

Total Resources37
Number of Hosts11
Static Resources28
JavaScript Resources8
CSS Resources1

hexlet.io mobile page speed rank

Last tested: 2019-01-22


Mobile Speed Bad
54/100

hexlet.io Mobile Speed Test Quick Summary


priority - 34Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://hexlet.io/
https://hexlet.io/
https://ru.hexlet.io/

priority - 32Eliminate 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.

Optimize CSS Delivery of the following:

https://cdn2.hexlet.io/assets/application-f23c1e2b…2bbe0f621bf454e5ec.css

priority - 20Leverage 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://cdn.wootric.com/wootric-sdk.js (expiration not specified)
https://ipinfo.io/ (expiration not specified)
https://avatars0.githubusercontent.com/u/9467021?v=4 (5 minutes)
https://avatars1.githubusercontent.com/u/818556?v=4 (5 minutes)
https://www.googletagmanager.com/gtag/js?id=UA-1360700-51 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-WK88TH (15 minutes)
https://mc.yandex.ru/metrika/advert.gif (60 minutes)
https://mc.yandex.ru/metrika/watch.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://hexlet.io/assets/application-f23c1e2b0d1bb…2bbe0f621bf454e5ec.css (4 hours)
https://hexlet.io/assets/cta-f4bdb6aaebdf9794e8477…81985279b2fc6e5d6c.jpg (4 hours)
https://hexlet.io/assets/essential-8d1648340fe7267…3ba9d3e9fffa460f34c.js (4 hours)
https://hexlet.io/assets/landing_down_arrow_black-…5b6f99ef8be2febb1b.png (4 hours)
https://hexlet.io/assets/landing_footer_2-2d25f45c…3168d5b6f79c5ec450.png (4 hours)
https://hexlet.io/assets/logos/agima-543eb34b76fc4…0235a1881c967cc446.svg (4 hours)
https://hexlet.io/assets/logos/astrio-5d7df0e49bc4…ddb988abe5ad08d936.svg (4 hours)
https://hexlet.io/assets/logos/mediasoft-c983a2953…9b0bab7564dcb4ca6c.svg (4 hours)
https://hexlet.io/assets/logos/peter_service-502a2…92e6d639265fb7d879.svg (4 hours)
https://hexlet.io/assets/logos/rambler-32ba05a0213…0bb92b9a4876a9cf1e.svg (4 hours)
https://hexlet.io/assets/logos/simtech-8fdc40cb192…ed14365c900fce5d40.svg (4 hours)
https://hexlet.io/assets/screenshots/exercise-a3c5…2c2339eab1b28a8ea0.png (4 hours)
https://hexlet.io/assets/screenshots/github-060ce9…9d899defa94d121056.png (4 hours)
https://hexlet.io/assets/screenshots/qa-cc68d2a320…6f82fb45904c2288ce.png (4 hours)
https://hexlet.io/assets/screenshots/quiz-44d538e9…fe988722ab923e428b.png (4 hours)
https://hexlet.io/assets/screenshots/stack-8c3847f…7cabd6caf56607661c.png (4 hours)
https://hexlet.io/assets/screenshots/video-c75fcae…9fc267c6debf378fcd.png (4 hours)
https://hexlet.io/assets/tour_1-9a0e9fc279ec9cd53c…5b0ae8107fed2550ce.jpg (4 hours)
https://hexlet.io/assets/tour_2-c9d8d9a668177a6369…79b202bdbbcf375fcf.jpg (4 hours)

priority - 5Reduce server response time

In our test, your server responded in 0.37 seconds.

priority - 2Optimize images

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

Optimize the following images to reduce their size by 20.9KiB (93% reduction).

Compressing and resizing https://avatars1.githubusercontent.com/u/818556?v=4 could save 20.9KiB (93% reduction).

hexlet.io Mobile Resource Breakdown

Total Resources64
Number of Hosts17
Static Resources33
JavaScript Resources12
CSS Resources2

hexlet.io mobile page usability

Last tested: 2019-01-22


Mobile Usability Good
92/100

hexlet.io 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 <a href="/pages/about">О проекте</a> and 9 others are close to other tap targets.
The tap target <a href="/pages/testimonials">Отзывы</a> and 1 others are close to other tap targets.

priority - 3Size content to viewport

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

The page content is 427 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <div class="col-12 col-md-…-7 text-center"></div> falls outside the viewport.

hexlet.io HTML validation

Errors

A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.

Line: 15 Column: 1 - 220
"...2x192" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-57x57-f52e49208ae173f740c8f115217781975b78433b1fda469ec28ce70b92fc013e.png" sizes="57x57" /> <link..." Line: 16 Column: 1 - 224
"...57x57" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-114x114-c93f5c2681345acc94f672dc26dd79695eac733a3ac6f99ab3b0fbfa077d834e.png" sizes="114x114" /> <link..." Line: 17 Column: 1 - 220
"...4x114" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-72x72-27e1216e0a1b806d82b8ca649081eacf5b3f59b677b44c8e40eae30e83f90294.png" sizes="72x72" /> <link..." Line: 18 Column: 1 - 224
"...72x72" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-144x144-1f4fb8973826b06c9595101aac7f78fdb9bf26c3b769b759882ad319d58b17fd.png" sizes="144x144" /> <link..." Line: 19 Column: 1 - 220
"...4x144" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-60x60-08818618834c9c99de70284d4bfb0cdfc926b03c88c732ba92fd9ba9e5ac900f.png" sizes="60x60" /> <link..." Line: 20 Column: 1 - 224
"...60x60" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-120x120-3da36d0e1da4c8d1a6df85aec54c2b84946e96865005ffb4a10e99223bba2d61.png" sizes="120x120" /> <link..." Line: 21 Column: 1 - 220
"...0x120" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-76x76-6a66b2c592947eb379280523cb009884f61f620be8375ebdee3ed7d23743314a.png" sizes="76x76" /> <link..." Line: 22 Column: 1 - 224
"...76x76" /> <link rel="apple-touch-icon-precomposed" type="image/x-icon" href="https://cdn2.hexlet.io/assets/icons/default/apple-touch-icon-152x152-93cc5e1542f2ca0d20c1f7fca7b5ac37be57f70e42d23877668d616383497540.png" sizes="152x152" /> <meta..."

Stray end tag “script”.

Line: 75 Column: 1 - 9
"...</script> </script> <li..."

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

Line: 107 Column: 1 - 54
".../a> </li> <a class='align-middle btn btn-success' href='/u/new'>Начать..."

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

Line: 251 Column: 43 - 139
"...p='image'><img class="img-fluid rounded-circle" src="https://avatars3.githubusercontent.com/u/3643835?v=4"></img>..." Line: 274 Column: 50 - 201
"...p='image'><img class="img-fluid rounded-circle" src="https://cdn2.hexlet.io/assets/team/you-11dc1782520375a399be30e82f4392ded9c055e8a27c49f38d6128c06f1fb9f3.jpg"></img>..." Line: 284 Column: 47 - 142
"...p='image'><img class="img-fluid rounded-circle" src="https://avatars1.githubusercontent.com/u/818556?v=4"></img>..." Line: 312 Column: 23 - 174
"...p='image'><img class="img-fluid rounded-circle" src="https://cdn2.hexlet.io/assets/team/you-11dc1782520375a399be30e82f4392ded9c055e8a27c49f38d6128c06f1fb9f3.jpg"></img>..." Line: 331 Column: 23 - 120
"...p='image'><img class="img-fluid rounded-circle" src="https://avatars1.githubusercontent.com/u/21976058?v=4"></img>..." Line: 346 Column: 23 - 120
"...p='image'><img class="img-fluid rounded-circle" src="https://avatars1.githubusercontent.com/u/18409291?v=3"></img>..."

Stray end tag “img”.

Line: 251 Column: 140 - 145
"...3835?v=4"></img></div>..." Line: 274 Column: 202 - 207
"...b9f3.jpg"></img></div>..." Line: 284 Column: 143 - 148
"...8556?v=4"></img></di..." Line: 312 Column: 175 - 180
"...b9f3.jpg"></img></div>..." Line: 331 Column: 121 - 126
"...6058?v=4"></img></div>..." Line: 346 Column: 121 - 126
"...9291?v=3"></img></div>..."

The “itemprop” attribute was specified, but the element is not a property of any item.

Line: 312 Column: 1 - 22
"...-4 pb-3'> <div itemprop='image'><img c..." Line: 331 Column: 1 - 22
"...-4 pb-3'> <div itemprop='image'><img c..." Line: 346 Column: 1 - 22
"...-4 pb-3'> <div itemprop='image'><img c..."

Warnings

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 240 Column: 1 - 55
".../section> <section class='hexlet-landing-testimonials py-3 mt-5'> <div ..." Line: 435 Column: 1 - 50
".../section> <section class='hexlet-cta-line hexlet-jumbotron'> <div ..." Line: 461 Column: 1 - 46
".../section> <section class='hexlet-landing-purchase py-5'> <div ..."

This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.

Line: 2 Column: 16 - 6
"...TYPE html> <html> <head..."

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hexlet.io 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.


hexlet.io 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.