ITCAST.CN 传智播客官网-好口碑IT培训机构,一样的教育,不一样的品质


itcast.cn website information.

itcast.cn domain name is registered by .CN top-level domain registry. See the other sites registred in .CN domain zone.

No name server records were found.

According to Alexa traffic rank the highest website itcast.cn position was 2607 (in the world). The lowest Alexa rank position was 985575. Current position of itcast.cn in Alexa rank database is below 1 million.

Website itcast.cn Desktop speed measurement score (12/100) is better than the results of 1.93% of other sites shows that the page desktop performance can be improved.

itcast.cn Mobile usability score (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of itcast.cn (48/100) is better than the results of 30.32% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Jan-29-2022 N/AN/A
Jan-28-2022 10,508-7,901
Jan-27-2022 2,607N/A
Jan-26-2022 N/AN/A
Jan-25-2022 N/AN/A
Jan-24-2022 8,757-2,974
Jan-23-2022 5,7830

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itcast.cn Rank History

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itcast.cn whois

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itcast.cn server information

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itcast.cn desktop page speed rank

Last tested: 2019-12-12


Desktop Speed Bad
12/100

itcast.cn Desktop Speed Test Quick Summary


priority - 354 Optimize images

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priority - 101 Leverage browser caching

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http://s22.cnzz.com/stat.php?id=4617777&show=pic1 (90 minutes)

priority - 6 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 5 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:

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http://www.itcast.cn/2018czgw/css/style.css
http://www.itcast.cn/2018czgw/css/index.css

priority - 3 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 33KiB (30% reduction).

Minifying https://fs-im-kefu.7moor.com/im/08866c40-c822-11e7…365090717/socket.io.js could save 19.3KiB (46% reduction) after compression.
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priority - 1 Enable compression

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Compressing http://www.itcast.cn/2018czgw/js/header.js could save 915B (63% reduction).
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priority - 1 Minify HTML

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Minify HTML for the following resources to reduce their size by 5.8KiB (26% reduction).

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priority - 0 Minify CSS

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Minify CSS for the following resources to reduce their size by 3.2KiB (19% reduction).

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itcast.cn Desktop Resources

Total Resources231
Number of Hosts17
Static Resources207
JavaScript Resources28
CSS Resources9

itcast.cn Desktop Resource Breakdown

itcast.cn mobile page speed rank

Last tested: 2017-05-24


Mobile Speed Bad
48/100

itcast.cn Mobile Speed Test Quick Summary


priority - 51 Avoid 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.

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priority - 48 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 6 blocking script resources and 5 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.

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http://mo.faisys.com/css/template/353.min.css?v=201612121825
http://mo.faisys.com/css/cubeNavigation.min.css?v=201705241739

priority - 10 Optimize images

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priority - 8 Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 20% of the final above-the-fold content could be rendered with the full HTML response.

priority - 2 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:

http://www.itheima.com/images/a_bg.png (expiration not specified)
http://c.cnzz.com/core.php?web_id=4617777&t=z (15 minutes)
http://s22.cnzz.com/stat.php?id=4617777 (90 minutes)

priority - 1 Enable compression

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priority - 0 Minify HTML

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itcast.cn Mobile Resources

Total Resources37
Number of Hosts11
Static Resources27
JavaScript Resources6
CSS Resources5

itcast.cn Mobile Resource Breakdown

itcast.cn mobile page usability

Last tested: 2017-05-24


Mobile Usability Good
99/100

itcast.cn Mobile Usability Test Quick Summary


priority - 1 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 <li class=""> and 2 others are close to other tap targets.

The tap target <li class="on"> is close to 3 other tap targets.

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itcast.cn 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.


itcast.cn 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.