ZHIHU.COM 知乎 - 与世界分享你的知识、经验和见解

zhihu.com Website Information

Daily Unique Visits: 8,658,331

Daily Page Views: 69,266,648

Income Per Day: $69,267

Estimated Value: $74,808,360

This website is located in China and is using following IP address 118.178.213.186. See the complete list of popular websites hosted in China.

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

Website zhihu.com is using the following name servers:

  • ns4.dnsv4.com
  • ns3.dnsv4.com

and is probably hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN. See the full list of other websites hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN.

The highest website zhihu.com position in Alexa rank database was 36 and the lowest rank position was 340. Current position of zhihu.com in Alexa rank database is 176.

Desktop speed score of zhihu.com (84/100) is better than the results of 81.3% of other sites and shows that the page is performing great on desktop computers.

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

Mobile speed score of zhihu.com (70/100) is better than the results of 78.27% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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zhihu.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.


zhihu.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: ZHIHU.COM
Registry Domain ID: 1030643753_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2017-08-17T05:41:08Z
Creation Date: 2007-06-15T17:28:11Z
Registry Expiry Date: 2023-09-29T11:59:59Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: NS3.DNSV4.COM
Name Server: NS4.DNSV4.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2018-02-19T18:02:27Z

zhihu.com server information

Servers Location

zhihu.com desktop page speed rank

Last tested: 2016-12-21


Desktop Speed Medium
84/100

zhihu.com Desktop Speed Test Quick Summary


priority - 8 Eliminate render-blocking JavaScript and CSS in above-the-fold content

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

Remove render-blocking JavaScript:

https://static.zhihu.com/static/revved/-/js/instant.14757a4a.js

Optimize CSS Delivery of the following:

https://static.zhihu.com/static/revved/-/css/pages…ndex/main.7c8cf145.css

priority - 5 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://zhstatic.zhihu.com/assets/zap/2.1.14/zap.js (expiration not specified)
https://zhstatic.zhihu.com/assets/zfeedback/3.0.12/zfeedback.js (expiration not specified)
https://static.zhihu.com/static/revved/-/css/pages…ndex/main.7c8cf145.css (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/base.34bda779.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/common.23b70728.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/page-index.19f8b5aa.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/instant.14757a4a.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/vendor.cb14a042.js (10 minutes)
https://static.zhihu.com/static/revved/img/index/logo.6837e927.png (10 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)

priority - 3 Reduce server response time

priority - 1 Optimize images

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

Optimize the following images to reduce their size by 9.6KiB (64% reduction).

Compressing https://www.zhihu.com/captcha.gif?r=1482285313656&type=login&lang=cn could save 7.6KiB (65% reduction).
Compressing https://www.zhihu.com/captcha.gif?r=1482285313660&type=register could save 2KiB (60% reduction).

zhihu.com Desktop Resource Breakdown

Total Resources21
Number of Hosts6
Static Resources10
JavaScript Resources9
CSS Resources1

zhihu.com mobile page speed rank

Last tested: 2016-12-21


Mobile Speed Medium
70/100

zhihu.com Mobile Speed Test Quick Summary


priority - 32 Eliminate render-blocking JavaScript and CSS in above-the-fold content

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

Remove render-blocking JavaScript:

https://static.zhihu.com/static/revved/-/js/instant.14757a4a.js

Optimize CSS Delivery of the following:

https://static.zhihu.com/static/revved/-/css/pages…ndex/main.7c8cf145.css

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://zhstatic.zhihu.com/assets/zap/2.1.14/zap.js (expiration not specified)
https://static.zhihu.com/static/revved/-/css/pages…ndex/main.7c8cf145.css (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/base.34bda779.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/common.23b70728.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/closure/page-index.19f8b5aa.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/instant.14757a4a.js (10 minutes)
https://static.zhihu.com/static/revved/-/js/vendor.cb14a042.js (10 minutes)
https://static.zhihu.com/static/revved/img/app_pro…r/icon@3x.6362b806.png (10 minutes)
https://static.zhihu.com/static/revved/img/index/logo@2x.e4e2b466.png (10 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)

priority - 4 Reduce server response time

priority - 1 Optimize images

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

Optimize the following images to reduce their size by 5.1KiB (59% reduction).

Compressing https://www.zhihu.com/captcha.gif?r=1482285301471&type=login could save 2.6KiB (59% reduction).
Compressing https://www.zhihu.com/captcha.gif?r=1482285301477&type=register could save 2.4KiB (59% reduction).

zhihu.com Mobile Resource Breakdown

Total Resources21
Number of Hosts6
Static Resources10
JavaScript Resources8
CSS Resources1

zhihu.com mobile page usability

Last tested: 2016-12-21


Mobile Usability Good
100/100

zhihu.com Mobile Resource Breakdown

Total Resources21
Number of Hosts6
Static Resources10
JavaScript Resources8
CSS Resources1

zhihu.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: 5 Column: 1 - 64
"...="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <meta..."

Bad value “X-ZA-Response-Id” for attribute “http-equiv” on element “meta”.

Line: 6 Column: 1 - 79
"...ome=1" /> <meta http-equiv="X-ZA-Response-Id" content="9ad0f62235dcab99381473d00f3136c8"> <meta..."

Bad value “X-ZA-Experiment” for attribute “http-equiv” on element “meta”.

Line: 7 Column: 1 - 1106
"...f3136c8"> <meta http-equiv="X-ZA-Experiment" content="default:None,ge3:ge3_9,nweb_sticky_sidebar:sticky,ge2:ge2_1,live_review_buy_bar:live_review_buy_bar_2,home_ui2:default,is_show_unicom_free_entry:unicom_free_entry_off,app_store_rate_dialog:close,qa_sticky_sidebar:sticky_sidebar,android_profile_panel:panel_b,live_store:ls_a2_b2_c1_f2,new_live_feed_mediacard:old,iOS_Enable_FeedModule_WWAN_AritclePreRender:iOS_FeedModule_WWAN_PreRender_Enable,new_mobile_column_appheader:new_header,is_office:false,android_db_comment_with_repin_record:open,fav_act:default,android_db_repin_selection:open,search_hybrid_tabs:without-tabs,enable_tts_play:false,show_video_upload_attention:false,market_tab:market_tab_old,mobile_qa_page_proxy_heifetz:m_qa_page_nweb,nweb_write_answer:experiment,android_pass_through_push:all,new_more:new,newAppViewRelatedAd:no,qaweb_thumbnail_abtest:new,recommendation_abtest:new,Live_detail_wechat_banner:Live_detail_wechat_banner_1,android_db_recommend_action:open,zcm-lighting:zcm,qrcode_login:qrcode,is_new_noti_panel:yes,wechat_share_modal:wechat_share_modal_show,nweb_related_advert:default"> <meta..."

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

Line: 84 Column: 1 - 104
"...operate"> <input type="hidden" name="captcha" required data-rule-required="true" data-msg-required="请点击图中所有倒立的文字"> <inpu..." Line: 85 Column: 1 - 61
"...所有倒立的文字"> <input type="hidden" name="captcha_type" value="cn" required> <labe..." Line: 191 Column: 1 - 104
"...operate"> <input type="hidden" name="captcha" required data-rule-required="true" data-msg-required="请点击图中所有倒立的文字"> <inpu..." Line: 192 Column: 1 - 61
"...所有倒立的文字"> <input type="hidden" name="captcha_type" value="cn" required> <labe..."

Attribute “required” is only allowed when the input type is “checkbox”, “date”, “datetime-local”, “email”, “file”, “month”, “number”, “password”, “radio”, “search”, “tel”, “text”, “time”, “url”, or “week”.

Line: 84 Column: 1 - 104
"...operate"> <input type="hidden" name="captcha" required data-rule-required="true" data-msg-required="请点击图中所有倒立的文字"> <inpu..." Line: 85 Column: 1 - 61
"...所有倒立的文字"> <input type="hidden" name="captcha_type" value="cn" required> <labe..." Line: 191 Column: 1 - 104
"...operate"> <input type="hidden" name="captcha" required data-rule-required="true" data-msg-required="请点击图中所有倒立的文字"> <inpu..." Line: 192 Column: 1 - 61
"...所有倒立的文字"> <input type="hidden" name="captcha_type" value="cn" required> <labe..."

Element “img” is missing required attribute “src”.

Line: 90 Column: 1 - 38
"...natiner"> <img class="Captcha-image" alt="验证码" > </div..." Line: 197 Column: 1 - 38
"...natiner"> <img class="Captcha-image" alt="验证码" > </div..."

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

Line: 126 Column: 1 - 79
"...wrapper"> <img src="/static/img/spinner/grey-loading.gif" class="qrcode-signin-loading"/> </div..." Line: 261 Column: 1 - 104
"...'_blank'> <img src="https://static.zhihu.com/static/revved/img/index/chengxing_logo@2x.65dc76e8.png" border='0' /> </a> ..."

Attribute “name” not allowed on element “meta” at this point.

Line: 281 Column: 1 - 74
"...</script> <meta name="entry" content="ZH.entrySignPage" data-module-id="page-index"> <in..."

Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.

Line: 281 Column: 1 - 74
"...</script> <meta name="entry" content="ZH.entrySignPage" data-module-id="page-index"> <in..."

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 10 Column: 1 - 108
"...经验和见解。"/> <meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0, maximum-scale=1.0"/> <titl..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 261 Column: 1 - 104
"...'_blank'> <img src="https://static.zhihu.com/static/revved/img/index/chengxing_logo@2x.65dc76e8.png" border='0' /> </a> ..."

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zhihu.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.


zhihu.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.