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Título: React

Descrição: React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations.

Palavras-chave: unknown

Codificação de página: utf-8

Tamanho do arquivo da página: 266 KB

Informações do servidor

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IP: 66.33.60.194

Localização: United States,US,,,37.751,-97.822,America/Chicago

Servidor HTTP: vercel

Codificação: utf-8

Lista de metatags

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charset: utf-8 head:
name: viewport content: width=device-width, initial-scale=1 head:
name: description content: React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. head:
property: fb:app_id content: 623268441017527 head:
property: og:type content: website head:
property: og:url content: https://react.dev/ head:
property: og:title content: React head:
property: og:description content: React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. head:
property: og:image content: https://react.dev/images/og-home.png head:
name: twitter:card content: summary_large_image head:
name: twitter:site content: @reactjs head:
name: twitter:creator content: @reactjs head:
name: twitter:title content: React head:
name: twitter:description content: React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. head:
name: twitter:image content: https://react.dev/images/og-home.png head:
name: google-site-verification content: sIlAGs48RulR4DdP95YSWNKZIEtCqQmRjzn-Zq-CcD0 head:
name: msapplication-TileColor content: #2b5797
name: theme-color content: #23272f

Links internos

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Links externos

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Informações Whois

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domain_name: react.dev

update_date: 2025-11-27T09:00:28.109Z

update_time: 1764234028

creation_date: 2019-02-19T22:23:10.403Z

creation_time: 1550614990

expiration_date: 2027-02-19T22:23:10.403Z

Dados brutos Whois

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            Domain Name: REACT.DEV
Registrar: RegistrarSEC, LLC
Domain Status: client delete prohibited
Domain Status: client transfer prohibited
Domain Status: client update prohibited
Creation Date: 2019-02-19T22:23:10.403Z
Registry Expiry Date: 2027-02-19T22:23:10.403Z
Updated Date: 2025-11-27T09:00:28.109Z
Name Server: EDNA.NS.CLOUDFLARE.COM
Name Server: NORM.NS.CLOUDFLARE.COM
REGISTRAR Contact: RegistrarSEC, LLC
>>> Last update of RDAP database: 2026-01-25T19:30:00Z

Robots.txt

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			User-agent: *
Disallow:

Auditoria de SEO

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SEO técnico

✓

Código de resposta

200

Status 200 OK – a página carrega corretamente.

✓

Codificação de caracteres

Page: utf-8, Header: utf-8

Codificação de caracteres consistente entre HTML e cabeçalhos.

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Tamanho da página

272543 bytes

Tamanho de página aceitável para carregamento rápido.

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Recursos

108 total

Muitos recursos. Otimize e combine arquivos para melhor desempenho.

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Hreflang Tags

8 hreflang tags

Tags Hreflang encontradas para SEO multilíngue.

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Robots.txt

Exists

Arquivo Robots.txt encontrado.

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Sitemap

Not found

Adicione sitemap.xml e referencie-o em robots.txt.

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HTTPS

Yes

Conexão HTTPS segura habilitada.

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Compressão

br

Ative a compactação gzip ou zstd para reduzir o tamanho dos arquivos.

✓

Cache

public, max-age=0, must-revalidate

Cabeçalhos de controle de cache configurados corretamente.

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Velocidade da página

0.53 ms

Excelente velocidade de carregamento.

SEO na página

!

Título

React

Título muito curto. Expanda para 30 a 60 caracteres para melhor SEO.

!

Meta descrição

React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. Lenght:260

Meta descrição muito longa. Reduza para 100-160 caracteres.

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Título H1

2 found - "React"

Use apenas um título H1 por página. Remova tags H1 extras.

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Contagem de palavras

785

Bom comprimento de conteúdo (500-2.000 palavras recomendadas).

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Tag canônica

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Meta duplicada

[]

Nenhuma metatag duplicada encontrada.

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Palavras-chave

unknown

Conjunto de meta palavras-chave (nota: não usado pelos principais mecanismos de pesquisa).

Conteúdo e experiência do usuário

✓

Linguagem

en

Atributo de idioma definido corretamente.

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Imagens

35 total, 24 missing ALT

Adicione texto ALT às imagens para acessibilidade e SEO.

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Janela de visualização

width=device-width, initial-scale=1

Meta tag da viewport configurada corretamente para dispositivos móveis.

✓

Abrir gráfico

All OG tags present.

Todas as tags OpenGraph essenciais presentes.

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Dados Estruturados

0 JSON-LD scripts

Adicione dados estruturados (JSON-LD) para rich snippets e melhor SEO.

Frases de pesquisa - Google

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Posição	Frase	Página	Trecho
1	use event	/reference/react/useEffectEvent	useEffectEvent useEffectEvent is a React Hook that lets you extract non-reactive logic from your Effects into a reusable function called an Effect Event. ... Use for non- ...
1	react	/	React React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript.
2	are read	/	React React lets you build user interfaces out of individual pieces called components. Create your own React components like Thumbnail, LikeButton, and Video.
4	input content	/reference/react-dom/components/input	– React To display an input, render an component. By default, it will be a text input. You can pass type="checkbox" for a checkbox, type="radio" for a radio ...
7	children 2	/reference/react/Children	Children Children lets you manipulate and transform the JSX you received as the children prop. const mappedChildren = Children.map(children, child => 9	form use	/reference/react-dom/components/form	form The built-in browser < form > component lets you create interactive controls for submitting information.
11	html components	/reference/react-dom/components	React DOM Components React supports all of the browser built-in HTML and SVG components . Common components All of the built-in browser components support some props and events.
12	html ref	/learn/referencing-values-with-refs	Referencing Values with Refs When you want a component to “remember” some information, but you don't want that information to trigger new renders, you can use a ref . You will learn. How to ...
14	imgur com	/learn/writing-markup-with-jsx	Writing Markup with JSX JSX is a syntax extension for JavaScript that lets you write HTML-like markup inside a JavaScript file. Although there are other ways to write components, ...
16	javascript view	/	React React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript.

Serviços Adicionais

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react.dev

react.dev Captura de tela do site

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Links internos

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Dados brutos Whois

Robots.txt

Auditoria de SEO

SEO técnico

SEO na página

Conteúdo e experiência do usuário

Posições em Google

Frases de pesquisa - Google

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