dfrobot.com.cn website information.
dfrobot.com.cn domain name is registered by .CN top-level domain registry. See the other sites registred in .CN domain zone.
Following name servers are specified for dfrobot.com.cn domain:
- dns16.hichina.com
- dns15.hichina.com
and probably website dfrobot.com.cn is hosted by CLOUDFLARENET - Cloudflare, Inc., US web hosting company. Check the complete list of other most popular websites hosted by CLOUDFLARENET - Cloudflare, Inc., US hosting company.
According to Alexa traffic rank the highest website dfrobot.com.cn position was 3320 (in the world). The lowest Alexa rank position was 996338. Now website dfrobot.com.cn ranked in Alexa database as number 330518 (in the world).
Website dfrobot.com.cn Desktop speed measurement score (28/100) is better than the results of 7.4% of other sites shows that the page desktop performance can be improved.
dfrobot.com.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 dfrobot.com.cn (40/100) is better than the results of 18.97% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-27-2024 | 330,518 | -7,896 |
| Nov-26-2024 | 322,622 | 3,061 |
| Nov-25-2024 | 325,683 | -4,422 |
| Nov-24-2024 | 321,261 | -479 |
| Nov-23-2024 | 320,782 | 3,515 |
| Nov-22-2024 | 324,297 | 2,110 |
| Nov-21-2024 | 326,407 | -8,453 |
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dfrobot.com.cn Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
dfrobot.com.cn whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
dfrobot.com.cn server information
dfrobot.com.cn desktop page speed rank
Last tested: 2018-12-10
Desktop Speed
Bad
28/100
dfrobot.com.cn Desktop Speed Test Quick Summary
priority - 201 Optimize images
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priority - 41 Leverage browser caching
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https://www.googletagmanager.com/gtag/js?id=UA-33344788-1 (15 minutes)
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http://mc.dfrobot.com.cn/uc_server/images/noavatar_small.gif (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=UA-33344788-1 (15 minutes)
https://tajs.qq.com/stats?sId=11346859 (27.3 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 17 Enable 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 169.2KiB (68% reduction).
Compressing http://mc.dfrobot.com.cn/template/zhanzhuai_v/imag…s/jquery-1.12.1.min.js could save 61.8KiB (65% reduction).
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priority - 3 Avoid 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://dfrobot.com.cn/
http://mc.dfrobot.com.cn/
http://mc.dfrobot.com.cn/portal.php
http://mc.dfrobot.com.cn/
http://mc.dfrobot.com.cn/portal.php
priority - 2 Eliminate 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.
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.
Optimize CSS Delivery of the following:
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priority - 1 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 13.9KiB (30% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/jPages.js could save 5.9KiB (32% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/config.js could save 3.2KiB (29% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/slider.js could save 2.2KiB (50% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/index.js could save 1.3KiB (23% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/iscroll.js could save 555B (22% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/zhanzhuai-common.js could save 396B (21% reduction).
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Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/slider.js could save 2.2KiB (50% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/index.js could save 1.3KiB (23% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/iscroll.js could save 555B (22% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/zhanzhuai-common.js could save 396B (21% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/images/js/portal-hd.js could save 332B (17% reduction).
priority - 0 Minify 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 943B (40% reduction).
Minifying http://mc.dfrobot.com.cn/template/zhanzhuai_v/font/demo.css could save 943B (40% reduction) after compression.
dfrobot.com.cn Desktop Resources
| Total Resources | 105 |
| Number of Hosts | 11 |
| Static Resources | 83 |
| JavaScript Resources | 17 |
| CSS Resources | 5 |
dfrobot.com.cn Desktop Resource Breakdown
dfrobot.com.cn mobile page speed rank
Last tested: 2018-12-10
Mobile Speed
Bad
40/100
dfrobot.com.cn Mobile Speed Test Quick Summary
priority - 56 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 551.6KiB (54% reduction).
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Compressing http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/images/essence_1.jpg could save 8.9KiB (49% reduction).
Compressing http://mc.dfrobot.com.cn/data/attachment/forum/201…41ua778lf3h8236qq7.jpg could save 2.5KiB (17% reduction).
Compressing http://mc.dfrobot.com.cn/uc_server/data/avatar/000…15/20_avatar_small.jpg could save 462B (30% reduction).
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Compressing http://mc.dfrobot.com.cn/data/attachment/portal/20…13nlfx8tkxzptxw8kl.jpg could save 97.6KiB (75% reduction).
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Compressing http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/images/essence_2.jpg could save 9.7KiB (51% reduction).
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Compressing http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/images/essence_1.jpg could save 8.9KiB (49% reduction).
Compressing http://mc.dfrobot.com.cn/data/attachment/forum/201…41ua778lf3h8236qq7.jpg could save 2.5KiB (17% reduction).
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priority - 40 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 2 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:
http://mc.dfrobot.com.cn/template/iscwo_touch/iscw…ry/jquery-2.1.1.min.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/iscroll/iscroll.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/hammer/hammer.min.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/common.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/index.js
https://www.googletagmanager.com/gtag/js?id=UA-33344788-1
http://tajs.qq.com/stats?sId=11346859
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/iscroll/iscroll.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/hammer/hammer.min.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/common.js
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/js/index.js
https://www.googletagmanager.com/gtag/js?id=UA-33344788-1
http://tajs.qq.com/stats?sId=11346859
Optimize CSS Delivery of the following:
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/font/iconfont.css
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/css/appstyle.css
http://mc.dfrobot.com.cn/template/iscwo_touch/iscwo/css/appstyle.css
priority - 27 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://mc.dfrobot.com.cn/data/attachment/forum/201…06uvpcmyt3pz6zkakv.png (expiration not specified)
http://mc.dfrobot.com.cn/data/attachment/forum/201…02fikblo2ju4bez427.png (expiration not specified)
http://mc.dfrobot.com.cn/data/attachment/forum/201…01i33tfeci9iuciftu.png (expiration not specified)
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priority - 19 Avoid landing page redirects
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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 46% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response:
priority - 2 Minify JavaScript
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dfrobot.com.cn Mobile Resources
| Total Resources | 55 |
| Number of Hosts | 11 |
| Static Resources | 36 |
| JavaScript Resources | 11 |
| CSS Resources | 2 |
dfrobot.com.cn Mobile Resource Breakdown
dfrobot.com.cn mobile page usability
Last tested: 2018-12-10
Mobile Usability
Good
99/100
dfrobot.com.cn Mobile Usability Test Quick Summary
priority - 0 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.
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The tap target
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dfrobot.com.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.
dfrobot.com.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.