jetbrains.com.cn: JetBrains: 软件开发者和团队的必备工具

jetbrains.com.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: jetbrains.com.cn
ROID: 20051230s10011s47641355-cn
Domain Status: clientTransferProhibited
Registrant: 捷并思（上海）信息技术有限责任公司
Registrant Contact Email: sales.cn@jetbrains.com
Sponsoring Registrar: 厦门易名科技股份有限公司
Name Server: ns-165.awsdns-20.com
Name Server: ns-1633.awsdns-12.co.uk
Name Server: ns-807.awsdns-36.net
Name Server: ns-1216.awsdns-24.org
Registration Time: 2005-12-30 14:24:59
Expiration Time: 2023-12-30 14:24:59
DNSSEC: unsigned

jetbrains.com.cn server information

Servers Location

jetbrains.com.cn desktop page speed rank

Last tested: 2019-02-14

Desktop Speed Medium

73/100

jetbrains.com.cn Desktop Speed Test Quick Summary

priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

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https://www.jetbrains.com/_assets/default-page.d5c8588a7a67e834fca4.js
https://www.jetbrains.com/_assets/index.entry.7dc059393edfd336519b.js
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https://www.jetbrains.com/_assets/banner-rotator.e…ba609dec4bb4e967f20.js

Optimize CSS Delivery of the following:

https://www.jetbrains.com/_assets/common.47efe2097…82f11533fdfaeab163.css
https://www.jetbrains.com/_assets/default-page.a86…6fa5316e75df3c029a.css
https://cloud.typography.com/7463094/7169552/css/fonts.css
https://www.jetbrains.com/_assets/index.entry.f9ac…1b1caed600b6d0f6dc.css
https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css
https://www.jetbrains.com/_assets/banner-rotator.e…c259ecd3e54e058161.css

priority - 12Leverage 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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https://resources.jetbrains.com/storage/fonts/442701/A838A6A8A8A4A5471.css (expiration not specified)
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https://www.jetbrains.com/_assets/banner-rotator.e…ba609dec4bb4e967f20.js (expiration not specified)
https://www.jetbrains.com/_assets/banners/7.222bda19d0dcd3f74085.js (expiration not specified)
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https://www.jetbrains.com/_assets/common.47efe2097…82f11533fdfaeab163.css (expiration not specified)
https://www.jetbrains.com/_assets/default-page.a86…6fa5316e75df3c029a.css (expiration not specified)
https://www.jetbrains.com/_assets/default-page.d5c8588a7a67e834fca4.js (expiration not specified)
https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css (expiration not specified)
https://www.jetbrains.com/_assets/inc/top-customer…72e05be1597f2270fde.js (expiration not specified)
https://www.jetbrains.com/_assets/index.entry.7dc059393edfd336519b.js (expiration not specified)
https://www.jetbrains.com/_assets/index.entry.f9ac…1b1caed600b6d0f6dc.css (expiration not specified)
https://www.jetbrains.com/_assets/www/img/dog_ecos…2e37c97a7553bd4896.svg (expiration not specified)
https://www.jetbrains.com/img/banners-home-page/pr…card-goland-2018-3.png (expiration not specified)
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https://www.jetbrains.com/img/home-page/header-bg.png (expiration not specified)
https://www.jetbrains.com/img/home-page/silhouette.png (expiration not specified)
https://www.jetbrains.com/inc/top-customers-block/index.entry.js (expiration not specified)
https://www.jetbrains.com/shop/cart.json (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-5P98 (15 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 9Avoid 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://jetbrains.com.cn/
https://jetbrains.com.cn/
https://www.jetbrains.com/

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 1.3KiB (11% reduction).

Minifying https://www.jetbrains.com/ could save 1.3KiB (11% reduction) after compression.

priority - 0Enable compression

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Compressing https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css could save 487B (66% reduction).
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jetbrains.com.cn Desktop Resource Breakdown

Total Resources	30
Number of Hosts	7
Static Resources	24
JavaScript Resources	13
CSS Resources	6

jetbrains.com.cn mobile page speed rank

Last tested: 2019-02-14

Mobile Speed Bad

49/100

jetbrains.com.cn Mobile Speed Test Quick Summary

priority - 64Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://www.jetbrains.com/_assets/common.01ba5830a7b079c7b10b.js
https://www.jetbrains.com/_assets/default-page.d5c8588a7a67e834fca4.js
https://www.jetbrains.com/_assets/index.entry.7dc059393edfd336519b.js
https://www.jetbrains.com/_assets/inc/top-customer…72e05be1597f2270fde.js
https://www.jetbrains.com/_assets/banner-rotator.e…ba609dec4bb4e967f20.js

Optimize CSS Delivery of the following:

https://www.jetbrains.com/_assets/common.47efe2097…82f11533fdfaeab163.css
https://www.jetbrains.com/_assets/default-page.a86…6fa5316e75df3c029a.css
https://cloud.typography.com/7463094/7169552/css/fonts.css
https://www.jetbrains.com/_assets/index.entry.f9ac…1b1caed600b6d0f6dc.css
https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css
https://www.jetbrains.com/_assets/banner-rotator.e…c259ecd3e54e058161.css

priority - 34Avoid 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://jetbrains.com.cn/
https://jetbrains.com.cn/
https://www.jetbrains.com/

priority - 18Leverage 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://data.services.jetbrains.com/geo (expiration not specified)
https://resources.jetbrains.com/storage/fonts/442701/771EBAC5A99C318BD.css (expiration not specified)
https://www.jetbrains.com/_assets/banner-rotator.e…c259ecd3e54e058161.css (expiration not specified)
https://www.jetbrains.com/_assets/banner-rotator.e…ba609dec4bb4e967f20.js (expiration not specified)
https://www.jetbrains.com/_assets/banners/7.222bda19d0dcd3f74085.js (expiration not specified)
https://www.jetbrains.com/_assets/common.01ba5830a7b079c7b10b.js (expiration not specified)
https://www.jetbrains.com/_assets/common.47efe2097…82f11533fdfaeab163.css (expiration not specified)
https://www.jetbrains.com/_assets/default-page.a86…6fa5316e75df3c029a.css (expiration not specified)
https://www.jetbrains.com/_assets/default-page.d5c8588a7a67e834fca4.js (expiration not specified)
https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css (expiration not specified)
https://www.jetbrains.com/_assets/inc/top-customer…72e05be1597f2270fde.js (expiration not specified)
https://www.jetbrains.com/_assets/index.entry.7dc059393edfd336519b.js (expiration not specified)
https://www.jetbrains.com/_assets/index.entry.f9ac…1b1caed600b6d0f6dc.css (expiration not specified)
https://www.jetbrains.com/_assets/www/img/dog_ecos…2e37c97a7553bd4896.svg (expiration not specified)
https://www.jetbrains.com/img/banners-home-page/pr…card-goland-2018-3.png (expiration not specified)
https://www.jetbrains.com/img/banners-home-page/pr…esharper-2018-3@2x.png (expiration not specified)
https://www.jetbrains.com/img/home-page/header-bg@2x.png (expiration not specified)
https://www.jetbrains.com/img/home-page/silhouette@2x.png (expiration not specified)
https://www.jetbrains.com/inc/top-customers-block/index.entry.js (expiration not specified)
https://www.jetbrains.com/shop/cart.json (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-5P98 (15 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

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 1.3KiB (11% reduction).

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priority - 0Enable 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 884B (68% reduction).

Compressing https://www.jetbrains.com/_assets/inc/top-customer…7e051c94ee7abcf6e9.css could save 487B (66% reduction).
Compressing https://www.jetbrains.com/inc/top-customers-block/index.entry.js could save 397B (70% reduction).

jetbrains.com.cn Mobile Resource Breakdown

Total Resources	30
Number of Hosts	7
Static Resources	24
JavaScript Resources	13
CSS Resources	6

jetbrains.com.cn mobile page usability

Last tested: 2019-02-14

Mobile Usability Medium

67/100

jetbrains.com.cn Mobile Usability Test Quick Summary

priority - 50Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,000 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <span>Languages</span> falls outside the viewport.
The element <span>Solutions</span> falls outside the viewport.
The element <span>Support</span> falls outside the viewport.
The element <span>Store</span> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <div class="header-placeholder"> falls outside the viewport.
The element <div class="g-col-3 _xlg-4…tive z-index-1">The drive to d…p KeepEvolving</div> falls outside the viewport.
The element <img src="/img/home-page…ader-bg@2x.png" class="home-page-header__image"> falls outside the viewport.
The element <h4 class="home-page__h4 _color-light">ReSharper</h4> falls outside the viewport.
The element <p>Visual Studio…NET Developers</p> falls outside the viewport.
The element <use> falls outside the viewport.
The element <h4 class="home-page__h4 _color-light">Rider</h4> falls outside the viewport.
The element <p>Cross-platform .NET IDE</p> falls outside the viewport.
The element <use> falls outside the viewport.
The element <h4 class="home-page__h4 _color-light">DataGrip</h4> falls outside the viewport.
The element <br> falls outside the viewport.
The element <h3 class="product-card__h2">YouTrack 2018.4</h3> falls outside the viewport.
The element <p>Custom Project…User Mention.</p> falls outside the viewport.
The element <h3 class="product-card__h2 _color-light">GoLand 2018.3</h3> falls outside the viewport.
The element <p>Change Signatu…nd Mozilla rr.</p> falls outside the viewport.
The element <p class="sub-title _big">Whichever tech…tool to match.</p> falls outside the viewport.
The element <a href="/products.html#lang=cpp" class="wt-button wt-b…n_mode_outline">C++</a> falls outside the viewport.
The element <a href="/products.html#tech=ios" class="wt-button wt-b…n_mode_outline">macOS & iOS</a> falls outside the viewport.
The element <a href="/products.html#lang=python" class="wt-button wt-b…n_mode_outline">Python & Django</a> falls outside the viewport.
The element <a href="/products.html#tech=android" class="wt-button wt-b…n_mode_outline">Android</a> falls outside the viewport.
The element <a href="/products.html#lang=go" class="wt-button wt-b…n_mode_outline">Go</a> falls outside the viewport.
The element <a href="/products.html#lang=kotlin" class="wt-button wt-b…n_mode_outline">Kotlin</a> falls outside the viewport.
The element <a href="/products.html#lang=sql" class="wt-button wt-b…n_mode_outline">SQL</a> falls outside the viewport.
The element <div class="product-banner…t-separator-16">Download</div> falls outside the viewport.
The element <h3 class="product-banners__title">Developer Ecos…em Survey 2019</h3> falls outside the viewport.
The element <a href="/research/devecosystem-2019/" class="wt-button wt-b…n_mode_outline">Learn More</a> falls outside the viewport.
The element <use> falls outside the viewport.
The element <h2 class="home-page__h1…l _color-light">Trusted</h2> falls outside the viewport.
The element <img src="img/home-page/…houette@2x.png" class="globally-appreciated-img"> falls outside the viewport.
The element <div class="g-row">Many of the wo…and effective.</div> falls outside the viewport.
The element <div class="g-row">5M+ userstrust…n every month</div> falls outside the viewport.
The element <h2 class="home-page__h2 _color-light">What Developers Say</h2> falls outside the viewport.
The element <br> falls outside the viewport.
The element <br> falls outside the viewport.
The element <p class="sub-title _big">Our tools are…own companies.</p> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <h2 class="home-page__h2 _color-light">Quick links</h2> falls outside the viewport.
The element <h4 class="home-page__h4…nks-box__title">Get Sponsorship</h4> falls outside the viewport.
The element <p>Classroom and…roject support</p> falls outside the viewport.
The element <h4 class="home-page__h4…nks-box__title">Get Your Student Pack</h4> falls outside the viewport.
The element <p>Free access to…and other IDEs</p> falls outside the viewport.
The element <h4 class="home-page__h4…nks-box__title">Try PyCharm Edu</h4> falls outside the viewport.
The element <p>The free, easy…ng with Python</p> falls outside the viewport.
The element <h2 class="footer__header">Follow JetBrains</h2> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <use> falls outside the viewport.
The element <span class="text-nowrap">Copyright © 20…tBrains s.r.o.</span> falls outside the viewport.
The element <a href="/idea?fromFooter">IntelliJ IDEA</a> falls outside the viewport.
The element <a href="/privacy-security/?fromFooter">Privacy & Security</a> falls outside the viewport.
The element <li class="footer__list-item">|</li> falls outside the viewport.
The element <a href="/company/usete…tml?fromFooter">Terms of Use</a> falls outside the viewport.

priority - 0Size 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 <a href="https://www.je…/useterms.html" class="cookies-banner__link">Terms of Use</a> is close to 1 other tap targets.

jetbrains.com.cn HTML validation

Errors

A “charset” attribute on a “meta” element found after the first 1024 bytes.

Line: 119 Column: - 25
"... charset="utf-8"> <meta ht..."

Stray end tag “a”.

Line: 536 Column: 43 - 46
"... </a> ..."

Attribute “has-retina” not allowed on element “img” at this point.

Line: 1206 Column: 1 - 110
"...elative"> <img data-src="/img/home-page/header-bg-2019.png" has-retina class="home-page-header__image" alt width='1300'> <canv..." Line: 1360 Column: 1 - 105
"...elative"> <img data-src="img/home-page/silhouette.png" has-retina class="globally-appreciated-img" alt width='384'> </div..."

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

Line: 1206 Column: 1 - 110
"...elative"> <img data-src="/img/home-page/header-bg-2019.png" has-retina class="home-page-header__image" alt width='1300'> <canv..." Line: 1360 Column: 1 - 105
"...elative"> <img data-src="img/home-page/silhouette.png" has-retina class="globally-appreciated-img" alt width='384'> </div..."

Bad value “entry-point” for attribute “type” on element “script”: Subtype missing.

Line: 1422 Column: 1 - 73
"...v> </div> <script src="/inc/top-customers-block/index.entry.js" type="entry-point"></scri..."

Warnings

The “type” attribute is unnecessary for JavaScript resources.

Line: 256 Column: 9 - 85
"...> <script src="/_assets/common.580f51bcd48d970bbadc.js" type="text/javascript"></scri..." Line: 257 Column: 1 - 83
"...</script> <script src="/_assets/default-page.a5bb836c86c8b5b173c5.js" type="text/javascript"></scri..." Line: 258 Column: 1 - 82
"...</script> <script src="/_assets/index.entry.8c273096de2b7efc9907.js" type="text/javascript"></scri..." Line: 259 Column: 1 - 106
"...</script> <script src="/_assets/inc/top-customers-block/index.entry.aaab55bc631a6a5964f3.js" type="text/javascript"></scri..." Line: 1613 Column: 7 - 97
"...s"> <script src="/_assets/banner-rotator.entry.d6debed96fc6ece10b2c.js" type="text/javascript"></scri..."

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jetbrains.com.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.

jetbrains.com.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.

JETBRAINS.COM.CN JetBrains: 软件开发者和团队的必备工具

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jetbrains.com.cn Desktop Speed Test Quick Summary

priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

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Optimize CSS Delivery of the following:

priority - 12Leverage 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:

priority - 9Avoid 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.

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 1.3KiB (11% reduction).

priority - 0Enable 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 884B (68% reduction).

jetbrains.com.cn Desktop Resource Breakdown

jetbrains.com.cn mobile page speed rank

jetbrains.com.cn Mobile Speed Test Quick Summary

priority - 64Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 6 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 34Avoid 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.

priority - 18Leverage 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:

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 1.3KiB (11% reduction).

priority - 0Enable 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 884B (68% reduction).

jetbrains.com.cn Mobile Resource Breakdown

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jetbrains.com.cn Mobile Usability Test Quick Summary

priority - 50Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 1,000 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

priority - 0Size 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.

jetbrains.com.cn HTML validation

Errors

A “charset” attribute on a “meta” element found after the first 1024 bytes.

Stray end tag “a”.

Attribute “has-retina” not allowed on element “img” at this point.

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

Bad value “entry-point” for attribute “type” on element “script”: Subtype missing.

Warnings

The “type” attribute is unnecessary for JavaScript resources.

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jetbrains.com.cn TRACEROUTE