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76 reactjs.org Last Updated: 10 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 98%
Best Practices Desktop Score 92%
SEO Desktop Score 91%
Progressive Web App Desktop Score 73%
Performance Mobile Score 67%
Best Practices Mobile Score 92%
SEO Mobile Score 87%
Progressive Web App Mobile Score 74%
Page Authority Authority 63%
Domain Authority Domain Authority 79%
Moz Rank 6.3/10
Bounce Rate Rate 0%
Title Tag 57 Characters
REACT – A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES
Meta Description 0 Characters
NO DATA
Effective URL 19 Characters
https://reactjs.org
Excerpt Page content
React – A JavaScript library for building user interfacesReactDocsTutorialBlogCommunityv16.12.0 LanguagesGitHubReactA JavaScript library for building user interfacesGet StartedTake the TutorialDeclarativeReact makes it painless to create interactive ...
Keywords Cloud Density
react11 code8 state8 component8 example7 data7 using5 render5 tutorial4 community4
Keyword Consistency Keyword density is one of the main terms in SEO
Keyword Freq Title Desc Domain H1 H2
react 11
code 8
state 8
component 8
example 7
data 7
using 5
render 5
tutorial 4
community 4
Google Preview Your look like this in google search result
REACT – A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES
https://reactjs.org
React – A JavaScript library for building user interfacesReactDocsTutorialBlogCommunityv16.12.0 LanguagesGitHubReactA JavaScript library for building user interfacesGet StartedTake the TutorialDeclarativeReact makes it painless to create interactive ...
Robots.txt File Detected
Sitemap.xml File No Found
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: 2018-09-01 / 2 years
Create on: 2013-05-29 / 7 years
Expires on: 2020-05-29 / 3 months 29 days

MarkMonitor Inc. ,US
Registrar Whois Server: whois.markmonitor.com
Registrar URL: http://www.markmonitor.com

Nameservers
TINA.NS.CLOUDFLARE.COM
ANIRBAN.NS.CLOUDFLARE.COM
Page Size Code & Text Ratio
Document Size: ~68.3 KB
Code Size: ~30.13 KB
Text Size: ~38.17 KB Ratio: 55.88%

Estimation Traffic and Earnings

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Technologies

PWA - Manifest

React Docs React Docs React

The web app manifest is a simple JSON file that gives you, the developer, the ability to control how your app appears to the user in areas where they would expect to see apps (for example, a mobile device's home screen)
Param name
React Docs
Param short_name
React
Param lang
en
Param start_url
/
Param background_color
#20232a
Param theme_color
#20232a
Param display
standalone
Param legacy
1

Desktop

Desktop Screenshot
Server response times are low (TTFB) Root document took 130 ms
Time To First Byte identifies the time at which your server sends a response
Minimize third-party usage Third-party code blocked the main thread for 20 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 580 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
JavaScript execution time 0.7 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
Speed Index 0.6 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 1.7 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 536 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimizes main-thread work 1.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 0.6 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid an excessive DOM size 909 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 0.8 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 29 requests • 536 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Uses efficient cache policy on static assets 1 resource found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 650 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task
Time to Interactive 1.8 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 130 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
Time to Interactive 8.4 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 2,110 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) 4019 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 30% 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
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
Reduce the impact of third-party code Third-party code blocked the main thread for 260 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 3,520 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Reduce JavaScript execution time 3.9 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
Speed Index 2.1 s
Speed Index shows how quickly the contents of a page are visibly populated
First CPU Idle 7.9 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 533 KB
Large network payloads cost users real money and are highly correlated with long load times
Minimize main-thread work 5.0 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this
First Contentful Paint 2.1 s
First Contentful Paint marks the time at which the first text or image is painted
Avoid an excessive DOM size 909 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 3.3 s
First Meaningful Paint measures when the primary content of a page is visible
Keep request counts low and transfer sizes small 26 requests • 533 KB
To set budgets for the quantity and size of page resources, add a budget.json file
Uses efficient cache policy on static assets 1 resource found
A long cache lifetime can speed up repeat visits to your page
Max Potential First Input Delay 3,120 ms
The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task

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: Thu, 28 Nov 2019 02:38:34 GMT
Content-Type: text/html; charset=UTF-8
Content-Length: 19940
Connection: keep-alive
Set-Cookie: __cfduid=d9c37984fab1d1fc5af61c0e3360f84af1574908714; expires=Sat, 28-Dec-19 02:38:34 GMT; path=/; domain=.reactjs.org; HttpOnly
Cache-Control: public, max-age=0, must-revalidate
Etag: "bf4ea4ca34c313cf29cdd8b33e222ae9-ssl-df"
Link: ; rel=preload; as=script, ; rel=preload; as=script
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-Xss-Protection: 1; mode=block
Content-Encoding: gzip
Age: 36046
Vary: Accept-Encoding
X-NF-Request-ID: 3d72aec4-7cdf-48da-ab10-46f566bb26ea-12321437
CF-Cache-Status: DYNAMIC
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 53c8f76adb7fc528-ORD
DNS Records DNS Resource Records associated with a hostname
View DNS Records

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