Support for Document MetaData
Explore how React 19 allows you to manage document metadata declaratively by embedding <title>, <meta>, and other head tags directly in JSX. Understand the improvements over manual metadata handling and practice applying dynamic SEO and social sharing tags in various components to build well-structured React applications.
In traditional web apps, metadata such as the page title, description, and Open Graph tags live in the HTML <head>. In React single-page applications (SPAs), these values must be dynamic as the user navigates between different views.
Before React 19, updating metadata in React meant using document.title or relying on third-party libraries like react-helmet. These approaches added boilerplate and moved side effects away from the JSX where the UI is defined. React 19 introduces a major shift: we can now declare metadata tags—like <title>, <meta>, and <link>—directly in JSX.
Manual metadata updates
Before React 19, the most common way to change metadata was by manipulating the ...