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Web Frameworks

32 juejin.im Last Updated: 9 months

Success 62% of passed verification steps
Warning 15% of total warning
Errors 23% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 71%
Best Practices Desktop Score 85%
SEO Desktop Score 90%
Progressive Web App Desktop Score 35%
Performance Mobile Score 41%
Best Practices Mobile Score 85%
SEO Mobile Score 92%
Progressive Web App Mobile Score 63%
Page Authority Authority 54%
Domain Authority Domain Authority 39%
Moz Rank 5.4/10
Bounce Rate Rate 0%
Title Tag 29 Characters
掘金 - JUEJIN.IM - 一个帮助开发者成长的社区
Meta Description 244 Characters
掘金是一个帮助开发者成长的社区,是给开发者用的 Hacker News,给设计师用的 Designer News,和给产品经理用的 Medium。掘金的技术文章由稀土上聚集的技术大牛和极客共同编辑为你筛选出最优质的干货,其中包括:Android、iOS、前端、后端等方面的内容。用户每天都可以在这里找到技术世界的头条内容。与此同时,掘金内还有沸点、掘金翻译计划、线下活动、专栏文章等内容。即使你是 GitHub、StackOverflow、开源中国的用户,我们相信你也可以在这里有所收获。
Effective URL 17 Characters
https://juejin.im
Excerpt Page content
掘金 - juejin.im - 一个帮助开发者成长的社区新人专享好礼凡未购买过小册的用户,均可领取三张 5 折新人专享券,购买小册时自动使用专享券,最高可节省 45 元。小册新人 5 折券最高可省 15 元小册新人 5 折券最高可省 15 元小册新人 5 折券最高可省 15 元注:专享券的使用期限在领券的七天内。一键领取领取成功购买小册时自动使用专享券知道了前往小册首页领取失败本活动仅适用于小册新用户知道了提示根据我国《互联网跟帖评论服务管理规定》,您需要绑定手机号后才可在掘金社区内发布内容。...
Keywords Cloud Density
小册新人3 最高可省3 一个帮助开发者成长的社区2 隐私政策2 商务合作2 用户协议2 购买小册时自动使用专享券2 qingcloud1 京公网安备11010802026719号1 热门标签1
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
小册新人 3
最高可省 3
一个帮助开发者成长的社区 2
隐私政策 2
商务合作 2
用户协议 2
购买小册时自动使用专享券 2
qingcloud 1
京公网安备11010802026719号... 1
热门标签 1
Google Preview Your look like this in google search result
掘金 - JUEJIN.IM - 一个帮助开发者成长的社区
https://juejin.im
掘金是一个帮助开发者成长的社区,是给开发者用的 Hacker News,给设计师用的 Designer News,和给产品经理用的 Medium。掘金的技术文章由稀土上聚集的技术大牛和极客共同编辑为你筛选出最优质的干货,其中包括:Android、iOS、前端、后端等方面的内容。用户每天都可以在这里找
Robots.txt File Detected
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~35.02 KB
Code Size: ~32.62 KB
Text Size: ~2.4 KB Ratio: 6.85%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest

Manifest is not valid
Your site don't have valid manifest.json, read more in Web App Manifest

Desktop

Desktop Screenshot
Defer offscreen images Potential savings of 20 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Properly size images Potential savings of 37 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 4.4 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 2.0 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 1,046 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 2.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.6 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 7 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoid an excessive DOM size 1,001 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
First Meaningful Paint 1.0 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 59 requests • 1,046 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 32 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 290 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 2.2 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Page load is not fast enough on mobile networks Interactive on simulated mobile network at 10.3 s
A fast page load over a cellular network ensures a good mobile user experience
Estimated Input Latency 60 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
Remove unused CSS Potential savings of 76 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Serve images in next-gen formats Potential savings of 192 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Reduce server response times (TTFB) Root document took 2,160 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 210 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Minimize third-party usage Third-party code blocked the main thread for 0 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Total Blocking Time 380 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.9 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this

Mobile

Mobile Screenshot
Minimize third-party usage Third-party code blocked the main thread for 0 ms
Third-party code can significantly impact load performance. Limit the number of redundant third-party providers and try to load third-party code after your page has primarily finished loading
Total Blocking Time 2,360 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 3.4 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
Defer offscreen images Potential savings of 91 KB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive
Server Backend Latencies 0 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance
Speed Index 7.2 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 9.2 s
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input. [Learn more](https://web.dev/first-cpu-idle).
Avoids enormous network payloads Total size was 858 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 6.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.3 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid chaining critical requests 7 chains found
The Critical Request Chains below show you what resources are loaded with a high priority. Consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load
Avoid an excessive DOM size 1,000 elements
A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow)
First Meaningful Paint 4.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 58 requests • 858 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Serve static assets with an efficient cache policy 31 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 1,140 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 9.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive
Network Round Trip Times 0 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance
Estimated Input Latency 580 ms
Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy
First Contentful Paint (3G) 4860 ms
First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network
Tap targets are sized appropriately 100% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), and have enough space around them, to be easy enough to tap without overlapping onto other elements
Document uses legible font sizes 100% legible text
Font sizes less than 12px are too small to be legible and require mobile visitors to “pinch to zoom” in order to read. Strive to have >60% of page text ≥12px
Remove unused CSS Potential savings of 77 KB
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity
Serve images in next-gen formats Potential savings of 18 KB
Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption
Reduce server response times (TTFB) Root document took 1,610 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 1,100 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles
Enable text compression Potential savings of 15 KB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Speed And Optimization Tips

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Alexa Rank

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Local Rank: / Users: / PageViews:

Global Rank

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server
HTTP/1.1 200 OK
Server: nginx
Date: Mon, 09 Dec 2019 04:08:25 GMT
Content-Type: text/html; charset=utf-8
Connection: close
Vary: Accept-Encoding
Set-Cookie: ab={}; path=/; expires=Tue, 08 Dec 2020 04:08:25 GMT; secure; httponly
X-Frame-Options: SAMEORIGIN
Access-Control-Max-Age: 86400
Strict-Transport-Security: max-age=31536000
Content-Encoding: gzip
Set-Cookie: QINGCLOUDELB=229d9a3634d498216e02f8b4f3770be609f51ba16147f64a21f5d51a89fcd206|Xe3Iv|Xe3Iv; path=/; HttpOnly
Cache-control: private
DNS Records DNS Resource Records associated with a hostname
View DNS Records

Comments

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