Keeping the DOM Lean to Reduce TBT

A bloated Document Object Model (DOM) slows the browser by increasing memory use, style recalculation, and layout reflows. These extra tasks block the main thread and raise Total Blocking Time (TBT), making pages feel sluggish.\n\nKeep the DOM lean to maintain a responsive experience:\n- Remove redundant wrappers and empty nodes.\n- Render only what users see with pagination, lazy loading, or list virtualization.\n- Reuse existing elements when updating content.\n- Break long scripts with setTimeout, requestIdleCallback, or web workers so heavy work doesn't monopolize the main thread.\n- Monitor DOM size and TBT with DevTools or Lighthouse during development.\n\nFollowing these practices keeps interfaces fast and responsive even as your application grows.