Integrate in Next.js

Start with installation and basic usage. This example uses Next.js App Router to mount Univer Pdfs in a container with an explicit height.

Load the editor from a Client Component with ssr: false¹. A use client directive alone does not disable prerendering. Next.js.

Use your client license content in place of YOUR_CLIENT_LICENSE; do not use a file path. License configuration.

Integration Steps

Initialize Univer in useEffect.
Dispose of Univer in useEffect cleanup.

Example

Each mount uses its own child container. Disposal runs in a microtask after the surrounding React cleanup, so nested React roots are not unmounted synchronously during a React commit.

TSX

'use client'import { useEffect, useRef } from 'react'import { UniverLicensePlugin } from '@univerjs-pro/license'import { UniverPdfsPlugin } from '@univerjs-pro/pdfs'import { UniverPdfsUIPlugin } from '@univerjs-pro/pdfs-ui'import PdfsUIenUS from '@univerjs-pro/pdfs-ui/locale/en-US'import { LocaleType, mergeLocales, Univer } from '@univerjs/core'import { FUniver } from '@univerjs/core/facade'import DesignenUS from '@univerjs/design/locale/en-US'import { UniverUIPlugin } from '@univerjs/ui'import UIenUS from '@univerjs/ui/locale/en-US'import '@univerjs/design/lib/index.css'import '@univerjs/ui/lib/index.css'import '@univerjs-pro/pdfs-ui/lib/index.css'import '@univerjs-pro/pdfs/facade'export default function UniverEditor() {  const containerRef = useRef<HTMLDivElement>(null)  useEffect(() => {    const host = containerRef.current    if (!host) return    const container = document.createElement('div')    container.style.height = '100%'    host.append(container)    const univer = new Univer({      locale: LocaleType.EN_US,      locales: {        [LocaleType.EN_US]: mergeLocales(          DesignenUS,          UIenUS,          PdfsUIenUS,        ),      },    })    univer.registerPlugin(UniverLicensePlugin, {      license: 'YOUR_CLIENT_LICENSE',    })    univer.registerPlugin(UniverUIPlugin, { container })    univer.registerPlugin(UniverPdfsPlugin)    univer.registerPlugin(UniverPdfsUIPlugin)    const univerAPI = FUniver.newAPI(univer)    univerAPI.createPdf({ name: 'Untitled PDF' })    return () => {      queueMicrotask(() => {        univer.dispose()        container.remove()      })    }  }, [])  return <div ref={containerRef} style={{ height: 600 }} />}

TSX

'use client'import dynamic from 'next/dynamic'const UniverEditor = dynamic(() => import('./univer-editor'), { ssr: false })export default function Page() {  return <UniverEditor />}

Server-side rendering (SSR) runs rendering code before the browser loads the page. Browser-only APIs such as window and the DOM are unavailable there; a Client Component may still be prerendered unless SSR is disabled for that editor component. ↩

How is this guide?

Integration Steps

Example

Footnotes