What is vue3-file-preview?

vue3-file-previewer is a front-end component for Vue 3 applications that lets users view many kinds of files directly in the browser. It supports Word, Excel, PowerPoint, PDF, Markdown, plain text, code, JSON, images, audio, and video. The key selling point is that it runs entirely in the browser with no server or backend required. The project is written in TypeScript and built with Vite. It exposes a single component called VueFilePreview that you drop into your page, pass a file source to, and it renders the content. The file source can be a URL, a File object, a Blob, or raw binary data. The component figures out the file type automatically based on the filename, or you can specify it manually. Beyond basic previewing, the library offers several customization options. You can switch between a dark and light theme. You can set the interface language to Chinese or English. You can add your own buttons to the toolbar area, such as download, share, or print. You can also pass configuration parameters through to the underlying rendering engines for fine control over how each format is displayed. A notable feature is the plugin system. Developers can register custom renderers for file types the library does not support out of the box. The README gives an example of registering a component to handle CAD drawing files. This means the library is designed to be extended rather than being limited to its built-in format list. Installation is straightforward via npm or pnpm. You import the component and its stylesheet, then use it in your template. The README provides code examples showing how to wire up the component with a file URL, set the theme and locale, and add custom toolbar buttons. A live demo is available on GitHub Pages so you can try it without installing anything. The project is released under the MIT license.