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11 itellyou.cn Last Updated: 11 months

Success 40% of passed verification steps
Warning 30% of total warning
Errors 30% of total errors, require fast action

Desktop

Mobile

Performance Desktop Score 79%
Best Practices Desktop Score 69%
SEO Desktop Score 100%
Progressive Web App Desktop Score 46%
Performance Mobile Score 93%
Best Practices Mobile Score 69%
SEO Mobile Score 98%
Progressive Web App Mobile Score 48%
Page Authority Authority 0%
Domain Authority Domain Authority 0%
Moz Rank 0.0/10
Bounce Rate Rate 0%
Charset Encoding
Great, language/character encoding is specified: UTF-8
Title Tag 10 Characters
MSDN, 我告诉你
Meta Description 62 Characters
MSDN, 我告诉你
Effective URL 24 Characters
https://msdn.itellyou.cn
Excerpt Page content
MSDN, 我告诉你 站长备用十年相伴 最新更新联系我新浪微博腾讯微博 M @ ITellYou.CN企业解决方案MSDN 技术资源库工具和资源应用程序开发人员工具操...
Meta Keywords 1 Detected
Keywords Cloud Density
站长备用2 itellyou2 退款没有有效期1 免费高防免备案cdn1 注册送10美金1 itellyou十年相伴1 请捐助我1 本站不保证所有人都可以下载成功1 请在下载完成后再考虑自愿为本站打赏或捐助1 只需要提供付款截图和收款二维码即可1
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
站长备用 2
itellyou 2
退款没有有效期 1
免费高防免备案cdn 1
注册送10美金 1
itellyou十年相伴 1
请捐助我 1
本站不保证所有人都可以下载成功 1
请在下载完成后再考虑自愿为本站打赏或捐助... 1
只需要提供付款截图和收款二维码即可 1
Google Preview Your look like this in google search result
MSDN, 我告诉你
https://msdn.itellyou.cn
MSDN, 我告诉你
Robots.txt File No Found
Sitemap.xml File No Found
Page Size Code & Text Ratio
Document Size: ~13.35 KB
Code Size: ~8.96 KB
Text Size: ~4.38 KB Ratio: 32.83%

Estimation Traffic and Earnings

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Desktop

Desktop Screenshot
Serve images in next-gen formats Potential savings of 47 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 2,570 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 0 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 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this
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 18 KB
Serve images that are appropriately-sized to save cellular data and improve load time
Speed Index 3.1 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 0.7 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 268 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 0.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.7 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers
Avoid chaining critical requests 11 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
Avoids an excessive DOM size 156 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 0.7 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 24 requests • 268 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 20 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 0.7 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 10 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

Mobile

Mobile Screenshot
Avoid chaining critical requests 11 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
Avoids an excessive DOM size 156 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 2.5 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 24 requests • 268 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 20 resources found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 110 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 3.2 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
Estimated Input Latency 10 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) 5175 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 not sized appropriately 91% 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 67.86% 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
Serve images in next-gen formats Potential savings of 47 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
Server response times are low (TTFB) Root document took 580 ms
Time To First Byte identifies the time at which your server sends a response
Eliminate render-blocking resources Potential savings of 0 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 50 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 80 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.4 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 5 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 3.0 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 2.9 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 268 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.5 s
First Contentful Paint marks the time at which the first text or image is painted
Includes front-end JavaScript libraries with known security vulnerabilities 2 vulnerabilities detected
Some third-party scripts may contain known security vulnerabilities that are easily identified and exploited by attackers

Speed And Optimization Tips

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Alexa Rank

0

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
Date: Wed, 18 May 2011 01:06:07 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
X-Node-Id: 3fcbd39dd8383ae1
X-Via: Cache Cdn Server 1.7
Vary: Accept-Encoding
Server: Microsoft-IIS/8.5
X-AspNetMvc-Version: 5.2
X-Cache-Rule: cache,c0
Content-Encoding: gzip
X-Cache-Lookup: Hit From Upstream
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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