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REACT – A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES

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79 reactjs.org Last Updated: 7 months

Success 62% of passed verification steps

Warning 15% of total warning

Errors 23% of total errors, require fast action

Mobile

Performance Desktop Score 81%

Best Practices Desktop Score 93%

SEO Desktop Score 92%

Progressive Web App Desktop Score 70%

Performance Mobile Score 56%

Best Practices Mobile Score 93%

SEO Mobile Score 88%

Progressive Web App Mobile Score 71%

Page Authority Authority 66%

Domain Authority Domain Authority 85%

Moz Rank 6.6/10

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 interfacesReactDocsTutorialBlogCommunityv16.13.1 LanguagesGitHubReactA JavaScript library for building user interfacesGet StartedTake the TutorialDeclarativeReact makes it painless to create interactive ...

Keywords Cloud Density

react11 state8 component8 code8 example7 data7 using5 render5 loading4 community4

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

Keyword	Freq	Title	Desc	Domain	H1	H2
react	11
state	8
component	8
code	8
example	7
data	7
using	5
render	5
loading	4
community	4

Google Preview Your look like this in google search result

REACT – A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES

https://reactjs.org

Robots.txt File Detected

http://reactjs.org/robots.txt

Sitemap.xml File No Found

http://reactjs.org/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: 2020-04-28 / 11 months

Create on: 2013-05-29 / 8 years

Expires on: 2022-05-29 / 13 months 22 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: ~70.67 KB

Code Size: ~32.81 KB

Text Size: ~37.87 KB Ratio: 53.58%

Social Data

Estimation Traffic and Earnings

9,659

Unique Visits

Daily

17,869

Pages Views

Daily

$11

Income

Daily

270,452

Unique Visits

Monthly

509,267

Pages Views

Monthly

$275

Income

Monthly

3,129,516

Unique Visits

Yearly

6,003,984

Pages Views

Yearly

$2,904

Income

Yearly

Technologies

PWA - Manifest

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

Param start_url

Param background_color

#20232a

Param theme_color

#20232a

Param display

standalone

Param cacheDigest

f4d46f030265b4c48a05c999b8d93791

Desktop

Initial server response time was short Root document took 100 ms

Keep the server response time for the main document short because all other requests depend on it

Avoid long main-thread tasks 2 long tasks found

Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay

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

Avoids enormous network payloads Total size was 585 KiB

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

Minimizes main-thread work 0.9 s

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

Avoid serving legacy JavaScript to modern browsers Potential savings of 18 KiB

Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers

Uses efficient cache policy on static assets 1 resource found

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

First Contentful Paint 0.8 s

First Contentful Paint marks the time at which the first text or image is painted

Remove unused JavaScript Potential savings of 101 KiB

Remove unused JavaScript to reduce bytes consumed by network activity

Speed Index 0.8 s

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

Max Potential First Input Delay 540 ms

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

Total Blocking Time 480 ms

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

Avoid an excessive DOM size 925 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)

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

Time to Interactive 1.9 s

Time to interactive is the amount of time it takes for the page to become fully interactive

Avoids large JavaScript libraries with smaller alternatives 0 large libraries found

Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size

Keep request counts low and transfer sizes small 32 requests • 585 KiB

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

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

Largest Contentful Paint element 1 element found

This is the largest contentful element painted within the viewport

Estimated Input Latency 50 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 Meaningful Paint 0.8 s

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

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/).

Largest Contentful Paint 0.8 s

Largest Contentful Paint marks the time at which the largest text or image is painted

Reduce the impact of third-party code Third-party code blocked the main thread for 380 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

Mobile

Reduce JavaScript execution time 4.1 s

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

Avoids enormous network payloads Total size was 581 KiB

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

Uses efficient cache policy on static assets 1 resource found

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

First CPU Idle 8.5 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/).

Total Blocking Time 3,650 ms

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

Avoid serving legacy JavaScript to modern browsers Potential savings of 18 KiB

Avoid long main-thread tasks 10 long tasks found

Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay

Largest Contentful Paint 3.0 s

Largest Contentful Paint marks the time at which the largest text or image is painted

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

Largest Contentful Paint element 1 element found

This is the largest contentful element painted within the viewport

Minimize main-thread work 5.7 s

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

First Contentful Paint (3G) 5550 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 31% 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

Keep request counts low and transfer sizes small 29 requests • 581 KiB

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

Speed Index 2.6 s

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

Avoid an excessive DOM size 925 elements

Time to Interactive 9.0 s

Time to interactive is the amount of time it takes for the page to become fully interactive

Initial server response time was short Root document took 80 ms

Keep the server response time for the main document short because all other requests depend on it

Avoids large JavaScript libraries with smaller alternatives 0 large libraries found

Large JavaScript libraries can lead to poor performance. Prefer smaller, functionally equivalent libraries to reduce your bundle size

Estimated Input Latency 2,200 ms

First Meaningful Paint 3.4 s

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

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

First Contentful Paint 2.6 s

First Contentful Paint marks the time at which the first text or image is painted

Remove unused JavaScript Potential savings of 101 KiB

Remove unused JavaScript to reduce bytes consumed by network activity

Max Potential First Input Delay 3,230 ms

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

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

Reduce the impact of third-party code Third-party code blocked the main thread for 2,960 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

Speed And Optimization Tips

Website speed has a huge impact on performance, affecting user experience, conversion rates and even rankings. ‪‬‬By reducing page load-times, users are less likely to get distracted and the search engines are more likely to reward you by ranking you

Title Website

Congratulations! Your title is optimized

Description Website

Warning! Your description is not optimized

Robots.txt

Congratulations! Your site have a robots.txt file

Sitemap.xml

Warning! Not found a sitemap file for your website

SSL Secure

Congratulations! Your site have Support to HTTPS

Headings

Congratulations! You are using your H1 and H2 tags in your site

Blacklist

Congratulations! Your site is not listed in a blacklist

W3C Validator

Warning! Your site have errors W3C

Accelerated Mobile Pages (AMP)

Warning! Your site not have AMP Version

Domain Authority

Congratulations! Your Domain Authority is good

GZIP Compress

Warning! Your site not is compressed, this can make slower response for the visitors

Favicon

Congratulations! Your website appears to have a favicon.

Broken Links

Congratulations! You not have broken links View links

First 17 Links	Relationship	HTTP Status
React	Internal Link	301
Docs	Internal Link	301
Tutorial	Internal Link	301
Blog	Internal Link	301
Community	Internal Link	301
v16.13.1	Internal Link	301
Languages	Internal Link	301
Main Concepts	Internal Link	301
Advanced Guides	Internal Link	301
API Reference	Internal Link	301
Hooks	Internal Link	301
Testing	Internal Link	301
Concurrent Mode (Experimental)	Internal Link	301
Contributing	Internal Link	301
FAQ	Internal Link	301
Blog	Internal Link	301
Acknowledgements	Internal Link	301

Alexa Rank

10,177

Global Rank

6,544

India

Traffic

Search

Information Server

Response Header HTTP headers carry information about the client browser, the requested page and the server

HTTP/2 200 
date: Thu, 24 Sep 2020 09:15:57 GMT
content-type: text/html; charset=UTF-8
content-length: 20276
set-cookie: __cfduid=db1d1d59d3308922f00c80199662edaf11600938957; expires=Sat, 24-Oct-20 09:15:57 GMT; path=/; domain=.reactjs.org; HttpOnly; SameSite=Lax
cache-control: public, max-age=0, must-revalidate
etag: "56bc03c00516cc038d33d21b08119f3a-ssl-df"
link: ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=script, ; rel=preload; as=fetch; crossorigin, ; rel=preload; as=fetch; crossorigin
referrer-policy: same-origin
x-content-type-options: nosniff
x-frame-options: DENY
x-xss-protection: 1; mode=block
content-encoding: gzip
age: 55961
vary: Accept-Encoding
x-nf-request-id: 62a46787-8523-4ee8-bed1-605078a699d0-15908016
cf-cache-status: DYNAMIC
cf-request-id: 0560fef36d0000f99d6b3da200000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
server: cloudflare
cf-ray: 5d7b67657dc7f99d-YYZ

DNS Records DNS Resource Records associated with a hostname

View DNS Records

Type	Name	Value	Class	TTL
A	reactjs.org	104.26.9.29	IN	85
A	reactjs.org	104.26.8.29	IN	85
A	reactjs.org	172.67.70.91	IN	85
NS	reactjs.org	anirban.ns.cloudflare.com	IN	86400
NS	reactjs.org	tina.ns.cloudflare.com	IN	86400
TXT	reactjs.org	v=spf1 include:spf.mandrillapp.com include:sparkpostmail.com ~all	IN	300
TXT	reactjs.org	google-site-verification=phixj4WdeUCjzqWQjOkCLkD8y6oeiJbqnCihojcYOWA	IN	300
AAAA	reactjs.org	2606:4700:20::681a:91d	IN	84
AAAA	reactjs.org	2606:4700:20::ac43:465b	IN	84
AAAA	reactjs.org	2606:4700:20::681a:81d	IN	84

Your Website Score is

Similar Ranking

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79 reactjs.org Last Updated: 7 months

Desktop

Mobile

Social Data

Estimation Traffic and Earnings

Technologies

CloudFlare

Gatsby

React

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

Alexa Rank

10,177

6,544

Information Server

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