vko.cn Website Information
Daily Unique Visits: 0
Daily Page Views: 0
Income Per Day: $0
Estimated Value: $9
This website is located in China and is using following IP address 103.17.40.35. See the complete list of popular websites hosted in China.
vko.cn is registered under .CN top-level domain. Please check other sites in .CN zone.
Website vko.cn is using the following name servers:
- dns20.hichina.com
- dns19.hichina.com
and is probably hosted by CHINA169-BJ China Unicom Beijing Province Network, CN. See the full list of other websites hosted by CHINA169-BJ China Unicom Beijing Province Network, CN.
The highest website vko.cn position in Alexa rank database was 8196 and the lowest rank position was 969323. Current position of vko.cn in Alexa rank database is below 1 million.
Desktop speed score of vko.cn (50/100) is better than the results of 23.83% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of vko.cn (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed score of vko.cn (42/100) is better than the results of 21.5% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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vko.cn 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.
vko.cn 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: vko.cn
ROID: 20050706s10001s21316301-cn
Domain Status: clientTransferProhibited
Registrant: 北京微课九天教育科技有限公司
Registrant Contact Email: 22205293@qq.com
Sponsoring Registrar: 阿里云计算有限公司（万网）
Name Server: dns19.hichina.com
Name Server: dns20.hichina.com
Registration Time: 2005-07-06 20:25:26
Expiration Time: 2021-07-06 20:25:26
DNSSEC: unsigned
ROID: 20050706s10001s21316301-cn
Domain Status: clientTransferProhibited
Registrant: 北京微课九天教育科技有限公司
Registrant Contact Email: 22205293@qq.com
Sponsoring Registrar: 阿里云计算有限公司（万网）
Name Server: dns19.hichina.com
Name Server: dns20.hichina.com
Registration Time: 2005-07-06 20:25:26
Expiration Time: 2021-07-06 20:25:26
DNSSEC: unsigned
vko.cn server information
Servers Location
vko.cn desktop page speed rank
Last tested: 2018-10-09
Desktop Speed
Bad
50/100
vko.cn Desktop Speed Test Quick Summary
priority - 35Leverage 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:
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http://static.vko.cn/common/css/base.css (4 hours)
http://static.vko.cn/common/js/seajs/seajs/2.2.0/sea.js (4 hours)
http://static.vko.cn/common/js/stacktrace.js (4 hours)
http://static.vko.cn/common/js/vko/plugins/cookie/1.0.0/cookie.js (4 hours)
http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/json_parse.js (4 hours)
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http://static.vko.cn/v8/common/cart/v8cart.js (4 hours)
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http://static.vko.cn/v8/common/js/login.js (4 hours)
http://static.vko.cn/v8/common/js/stat.js (4 hours)
http://static.vko.cn/v8/common/js/utils.js (4 hours)
http://static.vko.cn/v8/common/js/vkouser.js (4 hours)
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http://static.vko.cn/v8/tiku/css/pageBar.css (4 hours)
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http://static.vko.cn/v8/v8s/common/js/common.js (4 hours)
http://static.vko.cn/v8/v8s/common/js/footer.js (4 hours)
http://static.vko.cn/v8/v8s/common/js/ml1.js (4 hours)
http://static.vko.cn/v8/v8s/home/js/homeTest.js (4 hours)
http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/kf.js (4 hours)
http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/style.css (4 hours)
https://image.vko.cn/ad/1531292174966.jpg (expiration not specified)
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http://static.vko.cn/common/js/vko/plugins/cookie/1.0.0/cookie.js (4 hours)
http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/json_parse.js (4 hours)
http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/parsejson.js (4 hours)
http://static.vko.cn/common/js/vkofileloader.js (4 hours)
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http://static.vko.cn/v5/js/common/vko/ui/player/1.0.0/player.js (4 hours)
http://static.vko.cn/v8/cms/player/base64.js (4 hours)
http://static.vko.cn/v8/common/cart/v8cart.js (4 hours)
http://static.vko.cn/v8/common/config.js (4 hours)
http://static.vko.cn/v8/common/css/ie.css (4 hours)
http://static.vko.cn/v8/common/css/pre-common.css (4 hours)
http://static.vko.cn/v8/common/css/print.css (4 hours)
http://static.vko.cn/v8/common/css/screen.css (4 hours)
http://static.vko.cn/v8/common/css/web/common-inherit.css (4 hours)
http://static.vko.cn/v8/common/css/web/new-header.css (4 hours)
http://static.vko.cn/v8/common/css/web/top_common.css (4 hours)
http://static.vko.cn/v8/common/images/zglogo1.png (4 hours)
http://static.vko.cn/v8/common/init.js (4 hours)
http://static.vko.cn/v8/common/jqueryplugin/easyui/jquery-1.7.2.min.js (4 hours)
http://static.vko.cn/v8/common/js/cookie.js (4 hours)
http://static.vko.cn/v8/common/js/headerTest.js (4 hours)
http://static.vko.cn/v8/common/js/local/md5.js (4 hours)
http://static.vko.cn/v8/common/js/login.js (4 hours)
http://static.vko.cn/v8/common/js/stat.js (4 hours)
http://static.vko.cn/v8/common/js/utils.js (4 hours)
http://static.vko.cn/v8/common/js/vkouser.js (4 hours)
http://static.vko.cn/v8/goods/js/access_log.js (4 hours)
http://static.vko.cn/v8/index/images/kf.png (4 hours)
http://static.vko.cn/v8/index/images/qq.png (4 hours)
http://static.vko.cn/v8/index/images/qq111_01.png (4 hours)
http://static.vko.cn/v8/index/images/rtop.png (4 hours)
http://static.vko.cn/v8/index/images/tm1.gif (4 hours)
http://static.vko.cn/v8/index/js/jquery.flexslider-min.js (4 hours)
http://static.vko.cn/v8/tiku/css/pageBar.css (4 hours)
http://static.vko.cn/v8/v8s/common/css/banner.css (4 hours)
http://static.vko.cn/v8/v8s/common/css/common.css (4 hours)
http://static.vko.cn/v8/v8s/common/css/headerTest.css (4 hours)
http://static.vko.cn/v8/v8s/common/css/newHome.css (4 hours)
http://static.vko.cn/v8/v8s/common/images/ad.jpg (4 hours)
http://static.vko.cn/v8/v8s/common/images/ban-loading.gif (4 hours)
http://static.vko.cn/v8/v8s/common/images/ban_ico.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/ban_icoh.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/ban_icohbg.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/calarbg.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/hotLine.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/libor.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/list_ico.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/logo.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/member.jpg (4 hours)
http://static.vko.cn/v8/v8s/common/images/n.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/rec_stu.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/tips_ico.png (4 hours)
http://static.vko.cn/v8/v8s/common/images/top_search.png (4 hours)
http://static.vko.cn/v8/v8s/common/js/common.js (4 hours)
http://static.vko.cn/v8/v8s/common/js/footer.js (4 hours)
http://static.vko.cn/v8/v8s/common/js/ml1.js (4 hours)
http://static.vko.cn/v8/v8s/home/js/homeTest.js (4 hours)
http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/kf.js (4 hours)
http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/style.css (4 hours)
priority - 33Enable 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 317.8KiB (71% reduction).
Compressing http://static.vko.cn/v8/common/jqueryplugin/easyui/jquery-1.7.2.min.js could save 59.8KiB (64% reduction).
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Compressing http://static.vko.cn/v8/v8s/home/js/homeTest.js could save 26.6KiB (78% reduction).
Compressing http://static.vko.cn/v8/v8s/common/css/newHome.css could save 20.7KiB (81% reduction).
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Compressing http://static.vko.cn/v8/common/js/utils.js could save 8.8KiB (65% reduction).
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Compressing http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/style.css could save 7.4KiB (73% reduction).
Compressing http://static.vko.cn/v8/common/js/login.js could save 7.2KiB (71% reduction).
Compressing http://static.vko.cn/v8/common/css/web/top_common.css could save 5.9KiB (76% reduction).
Compressing http://static.vko.cn/v8/common/js/local/md5.js could save 5.4KiB (72% reduction).
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Compressing http://static.vko.cn/v8/common/cart/v8cart.js could save 3.5KiB (61% reduction).
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Compressing http://static.vko.cn/v8/v8s/common/css/banner.css could save 1.6KiB (67% reduction).
Compressing http://static.vko.cn/v8/common/css/web/common-inherit.css could save 1.2KiB (69% reduction).
Compressing http://static.vko.cn/v8/common/js/stat.js could save 913B (54% reduction).
Compressing http://static.vko.cn/v8/v8s/common/js/common.js could save 655B (43% reduction).
Compressing http://static.vko.cn/v8/common/config.js could save 478B (57% reduction).
Compressing http://static.vko.cn/v8/tiku/css/pageBar.css could save 410B (54% reduction).
Compressing http://static.vko.cn/v8/goods/js/access_log.js could save 408B (50% reduction).
Compressing http://static.vko.cn/v8/common/css/screen.css could save 389B (42% reduction).
Compressing http://static.vko.cn/common/js/stacktrace.js could save 333B (42% reduction).
Compressing http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/parsejson.js could save 309B (48% reduction).
Compressing http://static.vko.cn/v8/common/js/vkouser.js could save 108B (35% reduction).
priority - 22Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 211.7KiB (48% reduction).
Compressing http://static.vko.cn/content/1/20089limit.jpg could save 42.5KiB (52% reduction).
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Compressing http://static.vko.cn/v8/index/images/rtop.png could save 17.8KiB (96% reduction).
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Compressing https://image.vko.cn/ad/1515746284974.jpg could save 13.6KiB (22% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/member.jpg could save 7.7KiB (33% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ad.jpg could save 7.2KiB (25% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/calarbg.png could save 3KiB (16% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/logo.png could save 1.5KiB (28% reduction).
Compressing http://static.vko.cn/v8/common/images/zglogo1.png could save 1.4KiB (28% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/hotLine.png could save 1.1KiB (55% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_icohbg.png could save 1KiB (74% reduction).
Compressing http://static.vko.cn/v8/index/images/tm1.gif could save 1KiB (93% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/top_search.png could save 1KiB (70% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/tips_ico.png could save 988B (84% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_icoh.png could save 977B (86% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_ico.png could save 976B (87% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/n.png could save 967B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/rec_stu.png could save 967B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/list_ico.png could save 959B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/libor.png could save 954B (92% reduction).
Compressing http://static.vko.cn/v8/index/images/kf.png could save 948B (45% reduction).
Compressing https://image.vko.cn/v8/v8s/common/images/line.jpg could save 937B (76% reduction).
Compressing http://static.vko.cn/v8/index/images/qq111_01.png could save 898B (70% reduction).
Compressing http://static.vko.cn/content/1/20090limit.jpg could save 35.1KiB (54% reduction).
Compressing http://static.vko.cn/content/1/20076limit.jpg could save 26KiB (51% reduction).
Compressing http://static.vko.cn/content/1/20051limit.jpg could save 24.6KiB (50% reduction).
Compressing http://static.vko.cn/v8/index/images/rtop.png could save 17.8KiB (96% reduction).
Compressing http://static.vko.cn/v8/index/images/qq.png could save 17.8KiB (97% reduction).
Compressing https://image.vko.cn/ad/1515746284974.jpg could save 13.6KiB (22% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/member.jpg could save 7.7KiB (33% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ad.jpg could save 7.2KiB (25% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/calarbg.png could save 3KiB (16% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/logo.png could save 1.5KiB (28% reduction).
Compressing http://static.vko.cn/v8/common/images/zglogo1.png could save 1.4KiB (28% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/hotLine.png could save 1.1KiB (55% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_icohbg.png could save 1KiB (74% reduction).
Compressing http://static.vko.cn/v8/index/images/tm1.gif could save 1KiB (93% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/top_search.png could save 1KiB (70% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/tips_ico.png could save 988B (84% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_icoh.png could save 977B (86% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/ban_ico.png could save 976B (87% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/n.png could save 967B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/rec_stu.png could save 967B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/list_ico.png could save 959B (88% reduction).
Compressing http://static.vko.cn/v8/v8s/common/images/libor.png could save 954B (92% reduction).
Compressing http://static.vko.cn/v8/index/images/kf.png could save 948B (45% reduction).
Compressing https://image.vko.cn/v8/v8s/common/images/line.jpg could save 937B (76% reduction).
Compressing http://static.vko.cn/v8/index/images/qq111_01.png could save 898B (70% reduction).
priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 13 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://static.vko.cn/v8/common/jqueryplugin/easyui/jquery-1.7.2.min.js
http://static.vko.cn/v8/common/js/utils.js
http://static.vko.cn/v8/goods/js/access_log.js
http://static.vko.cn/common/js/stacktrace.js
http://static.vko.cn/common/js/vkofileloader.js
http://static.vko.cn/common/js/seajs/seajs/2.2.0/sea.js
http://static.vko.cn/v8/common/js/cookie.js
http://static.vko.cn/v8/common/js/vkouser.js
http://static.vko.cn/v8/common/js/local/md5.js
http://static.vko.cn/v8/common/js/login.js
http://static.vko.cn/v8/common/config.js
http://static.vko.cn/v8/v8s/common/js/common.js
http://static.vko.cn/v8/common/js/headerTest.js
http://static.vko.cn/v8/common/js/utils.js
http://static.vko.cn/v8/goods/js/access_log.js
http://static.vko.cn/common/js/stacktrace.js
http://static.vko.cn/common/js/vkofileloader.js
http://static.vko.cn/common/js/seajs/seajs/2.2.0/sea.js
http://static.vko.cn/v8/common/js/cookie.js
http://static.vko.cn/v8/common/js/vkouser.js
http://static.vko.cn/v8/common/js/local/md5.js
http://static.vko.cn/v8/common/js/login.js
http://static.vko.cn/v8/common/config.js
http://static.vko.cn/v8/v8s/common/js/common.js
http://static.vko.cn/v8/common/js/headerTest.js
Optimize CSS Delivery of the following:
http://static.vko.cn/common/css/base.css
http://static.vko.cn/v8/common/css/web/new-header.css
http://static.vko.cn/v8/v8s/common/css/headerTest.css
http://static.vko.cn/v8/common/css/web/top_common.css
http://static.vko.cn/v8/common/css/web/common-inherit.css
http://static.vko.cn/v8/common/css/pre-common.css
http://static.vko.cn/v8/common/css/ie.css
http://static.vko.cn/v8/common/css/print.css
http://static.vko.cn/v8/common/css/screen.css
http://static.vko.cn/v8/tiku/css/pageBar.css
http://static.vko.cn/v8/v8s/common/css/common.css
http://static.vko.cn/v8/v8s/common/css/newHome.css
http://static.vko.cn/v8/v8s/common/css/banner.css
http://static.vko.cn/v8/common/css/web/new-header.css
http://static.vko.cn/v8/v8s/common/css/headerTest.css
http://static.vko.cn/v8/common/css/web/top_common.css
http://static.vko.cn/v8/common/css/web/common-inherit.css
http://static.vko.cn/v8/common/css/pre-common.css
http://static.vko.cn/v8/common/css/ie.css
http://static.vko.cn/v8/common/css/print.css
http://static.vko.cn/v8/common/css/screen.css
http://static.vko.cn/v8/tiku/css/pageBar.css
http://static.vko.cn/v8/v8s/common/css/common.css
http://static.vko.cn/v8/v8s/common/css/newHome.css
http://static.vko.cn/v8/v8s/common/css/banner.css
priority - 6Minify 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 59.2KiB (40% reduction).
Minifying http://static.vko.cn/v8/common/js/headerTest.js could save 10.5KiB (43% reduction).
Minifying http://static.vko.cn/v8/v8s/home/js/homeTest.js could save 8.9KiB (27% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/json_parse.js could save 8.7KiB (77% reduction).
Minifying http://static.vko.cn/v8/common/js/utils.js could save 5.6KiB (43% reduction).
Minifying http://static.vko.cn/v8/common/js/login.js could save 4.5KiB (45% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/cookie/1.0.0/cookie.js could save 3.6KiB (65% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/footer.js could save 3.5KiB (25% reduction).
Minifying http://static.vko.cn/common/js/vkofileloader.js could save 2.1KiB (50% reduction).
Minifying http://static.vko.cn/v8/common/js/local/md5.js could save 1.8KiB (25% reduction).
Minifying http://static.vko.cn/v8/common/cart/v8cart.js could save 1.6KiB (29% reduction).
Minifying http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/kf.js could save 1.6KiB (29% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/ml1.js could save 1.5KiB (60% reduction).
Minifying http://static.vko.cn/v8/common/js/stat.js could save 1.4KiB (84% reduction).
Minifying http://static.vko.cn/v8/common/js/cookie.js could save 1.2KiB (39% reduction).
Minifying http://static.vko.cn/v8/cms/player/base64.js could save 1KiB (35% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/common.js could save 543B (35% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/parsejson.js could save 477B (73% reduction).
Minifying http://static.vko.cn/v8/goods/js/access_log.js could save 242B (30% reduction).
Minifying http://static.vko.cn/v8/common/init.js could save 148B (60% reduction).
Minifying http://static.vko.cn/v8/common/config.js could save 133B (16% reduction).
Minifying http://static.vko.cn/v8/v8s/home/js/homeTest.js could save 8.9KiB (27% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/json_parse.js could save 8.7KiB (77% reduction).
Minifying http://static.vko.cn/v8/common/js/utils.js could save 5.6KiB (43% reduction).
Minifying http://static.vko.cn/v8/common/js/login.js could save 4.5KiB (45% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/cookie/1.0.0/cookie.js could save 3.6KiB (65% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/footer.js could save 3.5KiB (25% reduction).
Minifying http://static.vko.cn/common/js/vkofileloader.js could save 2.1KiB (50% reduction).
Minifying http://static.vko.cn/v8/common/js/local/md5.js could save 1.8KiB (25% reduction).
Minifying http://static.vko.cn/v8/common/cart/v8cart.js could save 1.6KiB (29% reduction).
Minifying http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/kf.js could save 1.6KiB (29% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/ml1.js could save 1.5KiB (60% reduction).
Minifying http://static.vko.cn/v8/common/js/stat.js could save 1.4KiB (84% reduction).
Minifying http://static.vko.cn/v8/common/js/cookie.js could save 1.2KiB (39% reduction).
Minifying http://static.vko.cn/v8/cms/player/base64.js could save 1KiB (35% reduction).
Minifying http://static.vko.cn/v8/v8s/common/js/common.js could save 543B (35% reduction).
Minifying http://static.vko.cn/common/js/vko/plugins/parsejson/1.0.0/parsejson.js could save 477B (73% reduction).
Minifying http://static.vko.cn/v8/goods/js/access_log.js could save 242B (30% reduction).
Minifying http://static.vko.cn/v8/common/init.js could save 148B (60% reduction).
Minifying http://static.vko.cn/v8/common/config.js could save 133B (16% reduction).
priority - 4Minify 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 37.8KiB (23% reduction).
Minifying http://static.vko.cn/v8/common/css/pre-common.css could save 14.3KiB (24% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/newHome.css could save 7.9KiB (31% reduction).
Minifying http://static.vko.cn/v8/common/css/web/new-header.css could save 6.2KiB (18% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/headerTest.css could save 3.9KiB (33% reduction).
Minifying http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/style.css could save 1.4KiB (15% reduction).
Minifying http://static.vko.cn/v8/common/css/web/top_common.css could save 1.3KiB (18% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/common.css could save 679B (21% reduction).
Minifying http://static.vko.cn/common/css/base.css could save 641B (13% reduction).
Minifying http://static.vko.cn/v8/common/css/web/common-inherit.css could save 466B (28% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/banner.css could save 376B (16% reduction).
Minifying http://static.vko.cn/v8/common/css/ie.css could save 276B (100% reduction).
Minifying http://static.vko.cn/v8/common/css/print.css could save 216B (100% reduction).
Minifying http://static.vko.cn/v8/tiku/css/pageBar.css could save 177B (24% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/newHome.css could save 7.9KiB (31% reduction).
Minifying http://static.vko.cn/v8/common/css/web/new-header.css could save 6.2KiB (18% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/headerTest.css could save 3.9KiB (33% reduction).
Minifying http://static.vko.cn/vko/js/common/plugins/kf/2.0.0/style.css could save 1.4KiB (15% reduction).
Minifying http://static.vko.cn/v8/common/css/web/top_common.css could save 1.3KiB (18% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/common.css could save 679B (21% reduction).
Minifying http://static.vko.cn/common/css/base.css could save 641B (13% reduction).
Minifying http://static.vko.cn/v8/common/css/web/common-inherit.css could save 466B (28% reduction).
Minifying http://static.vko.cn/v8/v8s/common/css/banner.css could save 376B (16% reduction).
Minifying http://static.vko.cn/v8/common/css/ie.css could save 276B (100% reduction).
Minifying http://static.vko.cn/v8/common/css/print.css could save 216B (100% reduction).
Minifying http://static.vko.cn/v8/tiku/css/pageBar.css could save 177B (24% reduction).
priority - 0Minify 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 1.6KiB (38% reduction).
Minifying http://www.vko.cn/ could save 1.6KiB (38% reduction) after compression.
vko.cn Desktop Resource Breakdown
| Total Resources | 87 |
| Number of Hosts | 8 |
| Static Resources | 72 |
| JavaScript Resources | 29 |
| CSS Resources | 14 |
vko.cn mobile page speed rank
Last tested: 2018-10-09
Mobile Speed
Bad
42/100
vko.cn Mobile Speed Test Quick Summary
priority - 51Avoid 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://vko.cn/
http://www.vko.cn/
http://m.vko.cn/
https://m.vko.cn/
http://www.vko.cn/
http://m.vko.cn/
https://m.vko.cn/
priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
https://static.vko.cn/m/3.0/css/swiper.min.css
https://static.vko.cn/m/live/css/base.css
https://static.vko.cn/m/3.0/css/index.css
https://static.vko.cn/m/live/css/base.css
https://static.vko.cn/m/3.0/css/index.css
priority - 27Leverage 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://image.vko.cn/content/2/2097limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2098limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2099limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2100limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2101limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2102limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2103limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2104limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2105limit.jpg (expiration not specified)
https://image.vko.cn/m/3.0/images/cccccc.jpg (expiration not specified)
https://image.vko.cn/m/3.0/images/gqbg.png (expiration not specified)
https://image.vko.cn/m/3.0/images/icon.png (expiration not specified)
https://image.vko.cn/m/course/images/m_zzzs.jpg (expiration not specified)
https://image.vko.cn/m/live/images/m_xjk2.png (expiration not specified)
https://m.vko.cn/common/images/mban10.png (expiration not specified)
https://m.vko.cn/common/images/mban8.png (expiration not specified)
https://static.vko.cn/m/3.0/css/index.css (4 hours)
https://static.vko.cn/m/3.0/css/swiper.min.css (4 hours)
https://static.vko.cn/m/3.0/images/dili.png (4 hours)
https://static.vko.cn/m/3.0/images/huan.png (4 hours)
https://static.vko.cn/m/3.0/images/huaxue.png (4 hours)
https://static.vko.cn/m/3.0/images/lishi.png (4 hours)
https://static.vko.cn/m/3.0/images/people.png (4 hours)
https://static.vko.cn/m/3.0/images/shengwu.png (4 hours)
https://static.vko.cn/m/3.0/images/shuxue.png (4 hours)
https://static.vko.cn/m/3.0/images/tuijian.png (4 hours)
https://static.vko.cn/m/3.0/images/wuli.png (4 hours)
https://static.vko.cn/m/3.0/images/yingyu.png (4 hours)
https://static.vko.cn/m/3.0/images/yuwen.png (4 hours)
https://static.vko.cn/m/3.0/images/zhengzhi.png (4 hours)
https://static.vko.cn/m/3.0/js/index.js (4 hours)
https://static.vko.cn/m/3.0/js/swiper.min.js (4 hours)
https://static.vko.cn/m/course/2.0/common/lib/jquery.js (4 hours)
https://static.vko.cn/m/live/css/base.css (4 hours)
https://static.vko.cn/m/live/js/common.js (4 hours)
https://static.vko.cn/v8/v8s/common/images/logo.png (4 hours)
https://image.vko.cn/content/2/2098limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2099limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2100limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2101limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2102limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2103limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2104limit.jpg (expiration not specified)
https://image.vko.cn/content/2/2105limit.jpg (expiration not specified)
https://image.vko.cn/m/3.0/images/cccccc.jpg (expiration not specified)
https://image.vko.cn/m/3.0/images/gqbg.png (expiration not specified)
https://image.vko.cn/m/3.0/images/icon.png (expiration not specified)
https://image.vko.cn/m/course/images/m_zzzs.jpg (expiration not specified)
https://image.vko.cn/m/live/images/m_xjk2.png (expiration not specified)
https://m.vko.cn/common/images/mban10.png (expiration not specified)
https://m.vko.cn/common/images/mban8.png (expiration not specified)
https://static.vko.cn/m/3.0/css/index.css (4 hours)
https://static.vko.cn/m/3.0/css/swiper.min.css (4 hours)
https://static.vko.cn/m/3.0/images/dili.png (4 hours)
https://static.vko.cn/m/3.0/images/huan.png (4 hours)
https://static.vko.cn/m/3.0/images/huaxue.png (4 hours)
https://static.vko.cn/m/3.0/images/lishi.png (4 hours)
https://static.vko.cn/m/3.0/images/people.png (4 hours)
https://static.vko.cn/m/3.0/images/shengwu.png (4 hours)
https://static.vko.cn/m/3.0/images/shuxue.png (4 hours)
https://static.vko.cn/m/3.0/images/tuijian.png (4 hours)
https://static.vko.cn/m/3.0/images/wuli.png (4 hours)
https://static.vko.cn/m/3.0/images/yingyu.png (4 hours)
https://static.vko.cn/m/3.0/images/yuwen.png (4 hours)
https://static.vko.cn/m/3.0/images/zhengzhi.png (4 hours)
https://static.vko.cn/m/3.0/js/index.js (4 hours)
https://static.vko.cn/m/3.0/js/swiper.min.js (4 hours)
https://static.vko.cn/m/course/2.0/common/lib/jquery.js (4 hours)
https://static.vko.cn/m/live/css/base.css (4 hours)
https://static.vko.cn/m/live/js/common.js (4 hours)
https://static.vko.cn/v8/v8s/common/images/logo.png (4 hours)
priority - 19Enable 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 181KiB (71% reduction).
Compressing https://static.vko.cn/m/3.0/js/swiper.min.js could save 89.2KiB (74% reduction).
Compressing https://static.vko.cn/m/course/2.0/common/lib/jquery.js could save 61.2KiB (65% reduction).
Compressing https://static.vko.cn/m/3.0/css/swiper.min.css could save 16.3KiB (84% reduction).
Compressing https://static.vko.cn/m/3.0/css/index.css could save 6.4KiB (79% reduction).
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priority - 0Minify JavaScript
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priority - 0Reduce server response time
In our test, your server responded in 0.21 seconds.
priority - 0Minify HTML
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vko.cn Mobile Resource Breakdown
| Total Resources | 43 |
| Number of Hosts | 6 |
| Static Resources | 36 |
| JavaScript Resources | 4 |
| CSS Resources | 3 |
vko.cn mobile page usability
Last tested: 2018-10-09
Mobile Usability
Good
100/100
vko.cn 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: 9 Column: 3 - 66
"...=Edge"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <ti..."
"...=Edge"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <ti..."
Bad value “100%” for attribute “height” on element “img”: Expected a digit but saw “%” instead.
Line: 46 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Line: 46 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 46 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 52 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 62 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..." Line: 67 Column: 9 - 110
"...> <img src="https://static.vko.cn/v8/index/images/tm1.gif" height="100%" width="100%" draggable="false"> ..."
No space between attributes.
Line: 85 Column: - 36
"...o_btn btn-dark"onclick="javasc..." Line: 86 Column: - 37
"..._btn btn-light"onclick="javasc..." Line: 100 Column: - 32
"...gin-rightslide"style="display:..."
"...o_btn btn-dark"onclick="javasc..." Line: 86 Column: - 37
"..._btn btn-light"onclick="javasc..." Line: 100 Column: - 32
"...gin-rightslide"style="display:..."
Attribute “value” not allowed on element “a” at this point.
Line: 300 Column: 6 - 112
"...de"> <a class="active" href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="3">高一</a>..." Line: 301 Column: 6 - 97
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="4">高二</a>..." Line: 302 Column: 6 - 97
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="5">高三</a>..." Line: 341 Column: 6 - 113
"...de"> <a class="active" href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="0">初一</a>..." Line: 342 Column: 6 - 98
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="1">初二</a>..." Line: 343 Column: 6 - 98
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="2">初三</a>..."
"...de"> <a class="active" href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="3">高一</a>..." Line: 301 Column: 6 - 97
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="4">高二</a>..." Line: 302 Column: 6 - 97
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOf17(this);" value="5">高三</a>..." Line: 341 Column: 6 - 113
"...de"> <a class="active" href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="0">初一</a>..." Line: 342 Column: 6 - 98
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="1">初二</a>..." Line: 343 Column: 6 - 98
"...</a> <a href="javascript: void(0);" onclick="changeRecommendCourseSemesterOfchu(this);" value="2">初三</a>..."
Stray start tag “script”.
Line: 500 Column: 2 - 31
"... </body> <script language="javascript"> var..."
"... </body> <script language="javascript"> var..."
Warnings
The “type” attribute is unnecessary for JavaScript resources.
Line: 22 Column: 3 - 83
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/utils.js"></scri..." Line: 23 Column: 3 - 100
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/jquery-addShopping.js"></scri..." Line: 24 Column: 3 - 92
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/swiper.min.js"></scri..." Line: 26 Column: 3 - 33
"...script> <script type="text/javascript"> va..." Line: 472 Column: 3 - 33
"...div>--> <script type="text/javascript"> va..." Line: 479 Column: 3 - 84
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/cookie.js"></scri..." Line: 480 Column: 3 - 85
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/vkouser.js"></scri..." Line: 481 Column: 3 - 87
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/local/md5.js"></scri..." Line: 482 Column: 3 - 93
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/login_https.js"></scri..." Line: 486 Column: 3 - 98
"...ript> <script type="text/javascript" src="https://static.vko.cn/v8/index/js/jquery.flexslider-min.js"></scri..." Line: 487 Column: 3 - 33
"...script> <script type="text/javascript"> tr..." Line: 512 Column: 2 - 32
".../script> <script type="text/javascript"> // ..."
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/utils.js"></scri..." Line: 23 Column: 3 - 100
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/jquery-addShopping.js"></scri..." Line: 24 Column: 3 - 92
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/swiper.min.js"></scri..." Line: 26 Column: 3 - 33
"...script> <script type="text/javascript"> va..." Line: 472 Column: 3 - 33
"...div>--> <script type="text/javascript"> va..." Line: 479 Column: 3 - 84
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/cookie.js"></scri..." Line: 480 Column: 3 - 85
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/vkouser.js"></scri..." Line: 481 Column: 3 - 87
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/common/js/local/md5.js"></scri..." Line: 482 Column: 3 - 93
"...script> <script type="text/javascript" src="https://static.vko.cn/v8/3.0/common/js/login_https.js"></scri..." Line: 486 Column: 3 - 98
"...ript> <script type="text/javascript" src="https://static.vko.cn/v8/index/js/jquery.flexslider-min.js"></scri..." Line: 487 Column: 3 - 33
"...script> <script type="text/javascript"> tr..." Line: 512 Column: 2 - 32
".../script> <script type="text/javascript"> // ..."
The “type” attribute for the “style” element is not needed and should be omitted.
Line: 32 Column: 3 - 25
"...script> <style type="text/css"> ..."
"...script> <style type="text/css"> ..."
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Line: 500 Column: 2 - 31
"... </body> <script language="javascript"> var..."
"... </body> <script language="javascript"> var..."
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vko.cn 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.
vko.cn 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.