OBJC.IO objc.io

objc.io Website Information

Daily Unique Visits: 12,094

Daily Page Views: 60,470

Income Per Day: $151

Estimated Value: $90,600

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

No name server records were found.

and is probably hosted by GANDI SAS. See the full list of other websites hosted by GANDI SAS.

The highest website objc.io position in Alexa rank database was 19292 and the lowest rank position was 990727. Current position of objc.io in Alexa rank database is 112661.

Desktop speed score of objc.io (88/100) is better than the results of 85.98% of other sites and shows that the page is performing great on desktop computers.

Mobile usability score of objc.io (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 objc.io (70/100) is better than the results of 76.43% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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objc.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.


objc.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: objc.io
Registry Domain ID: 7e78a23790b44aeabda16ea162c326db-DONUTS
Registrar WHOIS Server: whois.gandi.net
Registrar URL: https://www.gandi.net
Updated Date: 2024-04-13T17:29:06Z
Creation Date: 2013-05-09T20:23:51Z
Registry Expiry Date: 2025-05-09T20:23:51Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Domain Status: ok https://icann.org/epp#ok
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Kugler, Eggert & Eidhof GbR
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province:
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: DE
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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
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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: ns-121-a.gandi.net
Name Server: ns-36-b.gandi.net
Name Server: ns-251-c.gandi.net
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-09-18T03:42:40Z

objc.io server information

Servers Location

objc.io desktop page speed rank

Last tested: 2017-05-20


Desktop Speed Good
88/100

objc.io Desktop Speed Test Quick Summary


priority - 7Avoid 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://objc.io/
http://www.objc.io/
https://www.objc.io/

priority - 4Eliminate 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://www.objc.io/stylesheets/all-e2253859.css

priority - 0Leverage 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.google-analytics.com/analytics.js (2 hours)

objc.io Desktop Resource Breakdown

Total Resources17
Number of Hosts3
Static Resources13
JavaScript Resources3
CSS Resources1

objc.io mobile page speed rank

Last tested: 2017-05-20


Mobile Speed Medium
70/100

objc.io Mobile Speed Test Quick Summary


priority - 26Avoid 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://objc.io/
http://www.objc.io/
https://www.objc.io/

priority - 16Eliminate 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://www.objc.io/stylesheets/all-e2253859.css

priority - 1Leverage 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.google-analytics.com/analytics.js (2 hours)

objc.io Mobile Resource Breakdown

Total Resources17
Number of Hosts3
Static Resources13
JavaScript Resources3
CSS Resources1

objc.io mobile page usability

Last tested: 2017-05-20


Mobile Usability Good
95/100

objc.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 <button type="submit" class="feature-newsletter__button">→</button> is close to 1 other tap targets.
The tap target <a href="https://talk.objc.io" class="no-decoration…r-color-orange">Swift Talk</a> and 10 others are close to other tap targets.

objc.io 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: 1 Column: 72 - 131
"...et=utf-8> <meta http-equiv=X-UA-Compatible content="IE=edge,chrome=1"> <meta..."

Bad value “true” for attribute “async” on element “script”.

Line: 1 Column: 787 - 841
"...esheet /> <script src="/javascripts/imgs-575fac35.js" async=true></scri..."

Attribute “label” not allowed on element “button” at this point.

Line: 10 Column: 11232 - 11349
"...-center"> <button class="scroller-button scroller-button--grayscale no-js-hide js-scroller-button-left ml-" label="Scroll left"> <svg ..." Line: 10 Column: 11739 - 11859
"...</button> <button class="scroller-button scroller-button--grayscale no-js-hide js-scroller-button-right ml--" label="Scroll right"> <svg ..." Line: 10 Column: 22550 - 22667
"...-center"> <button class="scroller-button scroller-button--grayscale no-js-hide js-scroller-button-left ml-" label="Scroll left"> <svg ..." Line: 10 Column: 23057 - 23177
"...</button> <button class="scroller-button scroller-button--grayscale no-js-hide js-scroller-button-right ml--" label="Scroll right"> <svg ..."

Duplicate ID “a”.

Line: 10 Column: 22884 - 22968
"...ck"><defs><path id=a d="M4.828 7H15v2H4.828l4.336 4.336L7.75 14.75 1 8l6.75-6.75 1.414 1.414z"></path..."

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

Line: 10 Column: 24381 - 24502
"...ontainer> <img class="block width-full height-auto" src="/images/books/app-architecture/app-architecture-cover-clean-03b05321.svg"/> </div..." Line: 10 Column: 25462 - 25595
"...ontainer> <img class="block width-full height-auto" src="/images/books/optimizing-collections/optimizing-collections-cover-clean-f4ca1c46.svg"/> </div..." Line: 10 Column: 26565 - 26682
"...ontainer> <img class="block width-full height-auto" src="/images/books/advanced-swift/advanced-swift-cover-clean-b8c3cf64.svg"/> </div..." Line: 10 Column: 27620 - 27727
"...ontainer> <img class="block width-full height-auto" src="/images/books/core-data/core-data-cover-clean-a9807b8f.svg"/> </div..." Line: 10 Column: 28704 - 28825
"...ontainer> <img class="block width-full height-auto" src="/images/books/functional-swift/functional-swift-cover-clean-c99c5a95.svg"/> </div..."

Stray end tag “div”.

Line: 10 Column: 29043 - 29048
".../section> </div></sect..."

Duplicate ID “front-border”.

Line: 10 Column: 29905 - 29985
"...000000)"> <path d="M33,17 L66,0 L66,39 L0,39 L0,0 L33,17 Z" id=front-border fill="#0091D9"></path..."

Duplicate ID “front-fill”.

Line: 10 Column: 29994 - 30113
"..."></path> <path d="M3,4.93389893 L3,36 L63,36 L62.9962841,4.92204354 L33,20.3746748 L3,4.93389893 Z" id=front-fill fill="#FFFFFF"></path..."

Duplicate attribute “name”.

Line: 10 Column: - 30488
"...ype=email name=email id=newsle..."

Attribute “autocorrect” not allowed on element “input” at this point.

Line: 10 Column: 30422 - 30591
"...=_blank> <input name=EMAIL spellcheck=false autocorrect=off type=email name=email id=newsletter-email required=required placeholder="Your Email" class=feature-newsletter__input /> <butto..."

Duplicate ID “Logo”.

Line: 10 Column: 32222 - 32260
"...themed"> <g id=Logo fill=none fill-rule=evenodd> <g id=..."

Duplicate ID “objc-logo-white-fit”.

Line: 10 Column: 32262 - 32287
"...evenodd> <g id=objc-logo-white-fit> <g id=..."

Duplicate ID “arrows”.

Line: 10 Column: 32289 - 32316
"...ite-fit> <g id=arrows fill="#FFA940"> <path ..."

Duplicate ID “arrow-up”.

Line: 10 Column: 32318 - 32392
"...FFA940"> <path id=arrow-up d="M423 73l8-7-45.5-46L340 66l8 7 32-34v86h11V39l32 34z"></path>..."

Duplicate ID “arrow-down”.

Line: 10 Column: 32401 - 32477
"...></path> <path id=arrow-down d="M520 80l8 7-45.5 46L437 87l8-7 32 34V28h11v86l32-34z"></path>..."

Duplicate ID “letters”.

Line: 10 Column: 32491 - 32519
"...th> </g> <g id=letters fill="#0091D9"> <path ..."

Duplicate ID “letter-c”.

Line: 10 Column: 32521 - 33124
"...0091D9"> <path id=letter-c d="M260.362 124c-15.38 0-25.18-7.104-31.26-16.07C224.534 101.162 222 91.855 222 79c0-12.854 2.535-22.16 7.1-28.927C235.184 41.107 244.815 34 260.196 34c10.136 0 18.417 3.383 24.334 9.136C290.272 48.72 294.327 55.696 295 65h-14.5c-1.172-5.918-3.24-10.022-6.45-13.238-3.382-3.213-8.28-5.242-13.855-5.242-6.592 0-11.156 2.367-14.87 5.583-6.76 5.753-8.622 16.408-8.622 26.898 0 10.49 1.862 21.147 8.62 26.897 3.716 3.216 8.28 5.586 14.872 5.586 5.91 0 11.15-2.2 14.528-5.753 3.044-3.213 5.072-7.105 5.777-12.73H295c-.67 9.136-4.22 16.115-9.966 21.698-6.082 5.92-14.193 9.302-24.672 9.302z"></path>..."

Duplicate ID “letter-j”.

Line: 10 Column: 33133 - 33332
"...></path> <path id=letter-j d="M168 156.306V143.94c3.582.675 7.17.846 10.757.846 6.484 0 9.732-5.086 9.243-10.846V36h15v97.77c.002 14.91-7.34 24.23-23.732 24.23-4.438 0-7-.338-11.268-1.694zM188 0h15v15h-15V0z"></path>..."

Duplicate ID “letter-b”.

Line: 10 Column: 33341 - 33822
"...></path> <path id=letter-b d="M132.358 124c-9.67 0-20.696-4.724-25.616-13.326L106 122H93V0h15v46c4.58-7.76 15.028-11.75 24.358-11.75 10.007 0 17.98 3.373 23.578 8.604C164.59 51.12 169 64.618 169 79.294c.002 14.173-4.238 27.162-12.38 35.43-5.6 5.735-13.743 9.276-24.262 9.276zm-1.786-78c-6.317 0-10.587 2.513-14.006 5.528-7.173 6.2-9.566 16.42-9.566 26.973 0 10.553 2.393 20.774 9.566 26.972 3.42 3.015 7.69 5.528 14.006 5.528C149.872 111 155 94.08 155 78.5c0-15.578-5.127-32.5-24.428-32.5z"></path>..."

Duplicate ID “letter-o”.

Line: 10 Column: 33831 - 34402
"...></path> <path id=letter-o d="M63.844 114.018c-6.25 6.093-15.03 9.982-25.84 9.982s-19.592-3.89-25.843-9.982C2.876 104.884 0 92.534 0 79 0 65.47 2.875 53.117 12.16 43.983 18.41 37.892 27.192 34 38 34c10.81 0 19.59 3.89 25.84 9.982C73.13 53.116 76 65.468 76 79.002c0 13.532-2.868 25.882-12.156 35.016zm-9.85-61.953C50.42 48.528 45.315 46 38.503 46c-6.81 0-11.92 2.526-15.497 6.065C16.875 58.295 15 68.565 15 78.5c0 9.937 1.876 20.206 8.005 26.438C26.58 108.472 31.692 111 38.502 111c6.81 0 11.917-2.526 15.493-6.062C60.125 98.708 62 88.438 62 78.5c0-9.934-1.88-20.206-8.005-26.435z">..."

Warnings

The first occurrence of ID “a” was here.

Line: 10 Column: 11566 - 11650
"...ck"><defs><path id=a d="M4.828 7H15v2H4.828l4.336 4.336L7.75 14.75 1 8l6.75-6.75 1.414 1.414z"></path..."

The first occurrence of ID “front-border” was here.

Line: 10 Column: 29500 - 29586
"...000000)"> <path d="M0,17 L33,0 L66,17 L66,56 L0,56 L0,17 L0,17 Z" id=front-border fill="#0091D9"></path..."

The first occurrence of ID “front-fill” was here.

Line: 10 Column: 29595 - 29722
"..."></path> <path d="M3,18.8312014 L3,53 L63,53 L63.0075078,18.8330879 L33.0037537,3.37664798 L3,18.8312014 Z" id=front-fill fill="#FFFFFF"></path..."

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

Line: 10 Column: 29060 - 29084
".../section> <section class=container> <div ..."

The first occurrence of ID “Logo” was here.

Line: 10 Column: 1059 - 1097
"...ht-auto"> <g id=Logo fill=none fill-rule=evenodd> <g id..."

The first occurrence of ID “objc-logo-white-fit” was here.

Line: 10 Column: 1099 - 1124
"...=evenodd> <g id=objc-logo-white-fit> <g id..."

The first occurrence of ID “arrows” was here.

Line: 10 Column: 1126 - 1153
"...hite-fit> <g id=arrows fill="#FFA940"> <path..."

The first occurrence of ID “arrow-up” was here.

Line: 10 Column: 1155 - 1229
"...#FFA940"> <path id=arrow-up d="M423 73l8-7-45.5-46L340 66l8 7 32-34v86h11V39l32 34z"></path..."

The first occurrence of ID “arrow-down” was here.

Line: 10 Column: 1238 - 1314
"..."></path> <path id=arrow-down d="M520 80l8 7-45.5 46L437 87l8-7 32 34V28h11v86l32-34z"></path..."

The first occurrence of ID “letters” was here.

Line: 10 Column: 1328 - 1356
"...ath> </g> <g id=letters fill="#0091D9"> <path..."

The first occurrence of ID “letter-c” was here.

Line: 10 Column: 1358 - 1961
"...#0091D9"> <path id=letter-c d="M260.362 124c-15.38 0-25.18-7.104-31.26-16.07C224.534 101.162 222 91.855 222 79c0-12.854 2.535-22.16 7.1-28.927C235.184 41.107 244.815 34 260.196 34c10.136 0 18.417 3.383 24.334 9.136C290.272 48.72 294.327 55.696 295 65h-14.5c-1.172-5.918-3.24-10.022-6.45-13.238-3.382-3.213-8.28-5.242-13.855-5.242-6.592 0-11.156 2.367-14.87 5.583-6.76 5.753-8.622 16.408-8.622 26.898 0 10.49 1.862 21.147 8.62 26.897 3.716 3.216 8.28 5.586 14.872 5.586 5.91 0 11.15-2.2 14.528-5.753 3.044-3.213 5.072-7.105 5.777-12.73H295c-.67 9.136-4.22 16.115-9.966 21.698-6.082 5.92-14.193 9.302-24.672 9.302z"></path..."

The first occurrence of ID “letter-j” was here.

Line: 10 Column: 1970 - 2169
"..."></path> <path id=letter-j d="M168 156.306V143.94c3.582.675 7.17.846 10.757.846 6.484 0 9.732-5.086 9.243-10.846V36h15v97.77c.002 14.91-7.34 24.23-23.732 24.23-4.438 0-7-.338-11.268-1.694zM188 0h15v15h-15V0z"></path..."

The first occurrence of ID “letter-b” was here.

Line: 10 Column: 2178 - 2659
"..."></path> <path id=letter-b d="M132.358 124c-9.67 0-20.696-4.724-25.616-13.326L106 122H93V0h15v46c4.58-7.76 15.028-11.75 24.358-11.75 10.007 0 17.98 3.373 23.578 8.604C164.59 51.12 169 64.618 169 79.294c.002 14.173-4.238 27.162-12.38 35.43-5.6 5.735-13.743 9.276-24.262 9.276zm-1.786-78c-6.317 0-10.587 2.513-14.006 5.528-7.173 6.2-9.566 16.42-9.566 26.973 0 10.553 2.393 20.774 9.566 26.972 3.42 3.015 7.69 5.528 14.006 5.528C149.872 111 155 94.08 155 78.5c0-15.578-5.127-32.5-24.428-32.5z"></path..."

The first occurrence of ID “letter-o” was here.

Line: 10 Column: 2668 - 3239
"..."></path> <path id=letter-o d="M63.844 114.018c-6.25 6.093-15.03 9.982-25.84 9.982s-19.592-3.89-25.843-9.982C2.876 104.884 0 92.534 0 79 0 65.47 2.875 53.117 12.16 43.983 18.41 37.892 27.192 34 38 34c10.81 0 19.59 3.89 25.84 9.982C73.13 53.116 76 65.468 76 79.002c0 13.532-2.868 25.882-12.156 35.016zm-9.85-61.953C50.42 48.528 45.315 46 38.503 46c-6.81 0-11.92 2.526-15.497 6.065C16.875 58.295 15 68.565 15 78.5c0 9.937 1.876 20.206 8.005 26.438C26.58 108.472 31.692 111 38.502 111c6.81 0 11.917-2.526 15.493-6.062C60.125 98.708 62 88.438 62 78.5c0-9.934-1.88-20.206-8.005-26.435z"></path..."

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objc.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.


objc.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.