reactjs.org

Live preview

This is a live, sandboxed embed of reactjs.org — not a copy. What it shows can change any time the site itself does.

HTTP & security headers

Response

Server

cloudflare

Content-Type

text/html; charset=utf-8

Cache-Control

public, max-age=0, must-revalidate

Content-Encoding

Not sent

Security

Content-Security-Policy

Not sent

Strict-Transport-Security

max-age=63072000

X-Frame-Options

Not sent

X-Content-Type-Options

Not sent

Referrer-Policy

Not sent

Permissions-Policy

Not sent

What each security header does

Redirect chain

1. 1.http://reactjs.org/HTTP 308

   → https://reactjs.org/

2. 2.https://reactjs.org/HTTP 308

   → https://react.dev/

3. 3.https://react.dev/HTTP 200

Meta tags

Title

React

Description

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.

Canonical

https://react.dev/

Robots

Not set

Generator

Not set

Open Graph title

React

Open Graph description

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.

Open Graph image

https://react.dev/images/og-home.png

Open Graph type

website

Twitter card

summary_large_image

Twitter title

React

Twitter image

https://react.dev/images/og-home.png

robots.txt

Disallow rules (User-agent: *)

1

Disallow rules (other agents)

0

No Sitemap declared in robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

• Cloudflarecdn

  Server: cloudflare

• Next.jsframework

  Found "_next/static/" in the page's HTML

• Google Analyticsanalytics

  Found "googletagmanager.com/gtag/js" in the page's HTML

Related domains