Reactjs.org - SEO Checker - Website Review

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REACT – A JAVASCRIPT LIBRARY FOR BUILDING USER INTERFACES

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76 reactjs.org Last Updated: 1 year

Success 62% of passed verification steps

Warning 15% of total warning

Errors 23% of total errors, require fast action

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

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: 2018-09-01 / 2 years

Create on: 2013-05-29 / 8 years

Expires on: 2020-05-29 / 7 months 23 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

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 legacy

Desktop

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

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

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

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

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
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

Type	Name	Value	Class	TTL
A	reactjs.org	104.25.130.17	IN	275
A	reactjs.org	104.25.131.17	IN	275
NS	reactjs.org	anirban.ns.cloudflare.com	IN	21599
NS	reactjs.org	tina.ns.cloudflare.com	IN	21599
TXT	reactjs.org	v=spf1 include:spf.mandrillapp.com include:sparkpostmail.com ~all	IN	299
AAAA	reactjs.org	2606:4700:20::6819:8211	IN	275
AAAA	reactjs.org	2606:4700:20::6819:8311	IN	275

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76 reactjs.org Last Updated: 1 year

Desktop

Mobile

Estimation Traffic and Earnings

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Technologies

CloudFlare

Gatsby

React

PWA - Manifest

Desktop

Mobile

Speed And Optimization Tips

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Alexa Rank

0

Information Server

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