Tb.cn - SEO Checker - Website Review

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Web Frameworks

33 tb.cn Last Updated: 10 months

Success 62% of passed verification steps

Warning 23% of total warning

Errors 15% of total errors, require fast action

Mobile

Performance Desktop Score 93%

Best Practices Desktop Score 77%

SEO Desktop Score 70%

Progressive Web App Desktop Score 31%

Performance Mobile Score 81%

Best Practices Mobile Score 69%

SEO Mobile Score 58%

Progressive Web App Mobile Score 30%

Page Authority Authority 49%

Domain Authority Domain Authority 41%

Moz Rank 4.9/10

Bounce Rate Rate 0%

Charset Encoding

Great, language/character encoding is specified: GBK

Title Tag 7 Characters

亲，访问受限了

Meta Description 121 Characters

淘宝网-亚洲最大、最安全的网上交易平台，提供各类服饰、美容、家居、数码、话费/点卡充值……2亿优质特价商品，同时提供担保交易(先收货后付款)、先行赔付、假一赔三、七天无理由退换货、数码免费维修等安全交易保障服务，让你全面安心享受网上购物乐趣。

Effective URL 33 Characters

http://err.taobao.com/error2.html

Excerpt Page content

亲，访问受限了淘宝网 ...

Keywords Cloud Density

系统繁忙1 阿里巴巴中国站1 taobao1 法律声明1 网站地图1 联系我们1 诚征英才1 开放平台1 联系客服1 营销中心1

Keyword Consistency Keyword density is one of the main terms in SEO

Keyword	Freq	Title	Desc	Domain	H1	H2
系统繁忙	1
阿里巴巴中国站	1
taobao	1
法律声明	1
网站地图	1
联系我们	1
诚征英才	1
开放平台	1
联系客服	1
营销中心	1

Google Preview Your look like this in google search result

亲，访问受限了

http://err.taobao.com/error2.html

Robots.txt File Detected

http://tb.cn/robots.txt

Sitemap.xml File Detected

http://tb.cn/sitemap.xml

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

Updated: 1970-01-01 / 51 years

Create on: 1970-01-01 / 51 years

Expires on: 1970-01-01 / 617 months 22 days

Nameservers

ns4.taobao.com

ns5.taobao.com

ns6.taobao.com

ns7.taobao.com

Page Size Code & Text Ratio

Document Size: ~15.22 KB

Code Size: ~7.36 KB

Text Size: ~7.87 KB Ratio: 51.68%

Estimation Traffic and Earnings

Only Registered Users

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Technologies

Tengine

Web Servers

PWA - Manifest

Manifest is not valid

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

Desktop

Does not use HTTPS 56 insecure requests found

All sites should be protected with HTTPS, even ones that don't handle sensitive data. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs

Server response times are low (TTFB) Root document took 390 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 110 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 25 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Efficiently encode images Potential savings of 124 KB

Optimized images load faster and consume less cellular data

Total Blocking Time 300 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

JavaScript execution time 0.6 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

Defer offscreen images Potential savings of 149 KB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive

Speed Index 1.7 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 1.4 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 580 KB

Large network payloads cost users real money and are highly correlated with long load times

Minimizes main-thread work 1.1 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

robots.txt is not valid 330 errors found

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed

First Contentful Paint 0.4 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 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

Avoids an excessive DOM size 665 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 0.4 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 61 requests • 580 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Uses efficient cache policy on static assets 36 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 320 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 1.4 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 20 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

Serve images in next-gen formats Potential savings of 201 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

Mobile

Server response times are low (TTFB) Root document took 50 ms

Time To First Byte identifies the time at which your server sends a response

Eliminate render-blocking resources Potential savings of 410 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles

Efficiently encode images Potential savings of 292 KB

Optimized images load faster and consume less cellular data

Enable text compression Potential savings of 25 KB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes

Total Blocking Time 160 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

JavaScript execution time 0.8 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

Defer offscreen images Potential savings of 262 KB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive

Speed Index 5.0 s

Speed Index shows how quickly the contents of a page are visibly populated

First CPU Idle 4.2 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 811 KB

Large network payloads cost users real money and are highly correlated with long load times

robots.txt is not valid 330 errors found

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed

Minimize main-thread work 2.7 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this

First Contentful Paint 1.8 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 7 chains found

Avoids an excessive DOM size 635 elements

First Meaningful Paint 1.8 s

First Meaningful Paint measures when the primary content of a page is visible

Keep request counts low and transfer sizes small 69 requests • 811 KB

To set budgets for the quantity and size of page resources, add a budget.json file

Uses efficient cache policy on static assets 36 resources found

A long cache lifetime can speed up repeat visits to your page

Max Potential First Input Delay 160 ms

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

Time to Interactive 4.6 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

First Contentful Paint (3G) 3469 ms

First Contentful Paint 3G marks the time at which the first text or image is painted while on a 3G network

Estimated Input Latency 20 ms

Serve images in next-gen formats Potential savings of 408 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

Does not use HTTPS 64 insecure requests found

Speed And Optimization Tips

Only Registered Users

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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
Server: Tengine
Content-Type: text/html
Content-Length: 5530
Connection: keep-alive
Date: Mon, 09 Dec 2019 07:32:51 GMT
Vary: Accept-Encoding
Expires: Mon, 09 Dec 2019 08:32:51 GMT
Cache-Control: max-age=3600
Content-Encoding: gzip
Ali-Swift-Global-Savetime: 1575876771
Via: cache23.l2ot7[321,200-0,M], cache51.l2ot7[323,0], cache1.us9[0,200-0,H], cache12.us9[0,0]
Age: 346
X-Cache: HIT TCP_MEM_HIT dirn:-2:-2
X-Swift-SaveTime: Mon, 09 Dec 2019 07:32:51 GMT
X-Swift-CacheTime: 3600
Timing-Allow-Origin: *
EagleId: 2ff618a015758771178935933e

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	tb.cn	203.119.213.27	IN	29
A	tb.cn	203.119.201.241	IN	29
A	tb.cn	203.119.218.137	IN	29
A	tb.cn	203.119.207.150	IN	29
NS	tb.cn	ns7.taobao.com	IN	86309
NS	tb.cn	ns4.taobao.com	IN	86309
NS	tb.cn	ns6.taobao.com	IN	86309
NS	tb.cn	ns5.taobao.com	IN	86309

Your Website Score is

Similar Ranking

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Top Technologies

33 tb.cn Last Updated: 10 months

Desktop

Mobile

Estimation Traffic and Earnings

Sign up for see all features and reviews about this site

Technologies

Tengine

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

Sign up for see all features and reviews about this site

Alexa Rank

0

Information Server

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