File Viewer

Spec sheet

Product

File Viewer is a read-only, browser-based file preview component for Office, PDF/OFD, CAD, archives, email, and other formats.Read 2 Oct 2026 · github.com

Integrations

The maker documents integrations for Vanilla JavaScript and Web Components, Vue, React, Svelte, and jQuery.Read 1 Oct 2026 · doc.file-viewer.app

Support

The repository directs users to GitHub Sponsors for maintenance support and enterprise support for private deployments or response commitments.Read 2 Oct 2026 · github.com

License

The source is licensed Apache-2.0, while the DWG/DWF/DWFX runtime packages named by the project are AGPL-3.0-only.Read 2 Oct 2026 · github.com

Commercial offering

A separate commercial Office engine focuses on Word, Excel, and PowerPoint fidelity, large-file performance, private delivery, and enterprise support.Read 1 Oct 2026 · file-viewer.app

Distribution

The project is distributed through npm packages, public GitHub repositories, release downloads, and self-hostable runtime assets.Read 1 Oct 2026 · doc.file-viewer.app

Features

Viewer options include search, zoom, print, download, HTML export, watermarks, lifecycle hooks, and operation guards.Read 1 Oct 2026 · doc.file-viewer.app

Format coverage

The product site reports 274 registered extensions and 47 preview pipelines, with 224 stable and 50 experimental.Read 2 Oct 2026 · file-viewer.app

Formats

The maker lists 274 registered file extensions across 47 preview pipelines, with 224 stable and 50 experimental extensions.Read 1 Oct 2026 · file-viewer.app

Frameworks

Integration packages are listed for Vanilla JS/Web Components, Vue 2 and 3, React, Svelte, and jQuery.Read 2 Oct 2026 · github.com

Input requirements

A file URL must be reachable by the browser, and cross-origin files need appropriate CORS headers; a File object can also be supplied.Read 2 Oct 2026 · github.com

Known constraints

The project says fonts, vendor-specific features, encrypted files, and very large inputs can affect fidelity or memory use.Read 2 Oct 2026 · github.com

Large files

The maker advises validating extreme large files with real samples because file size can affect performance and memory use.Read 1 Oct 2026 · doc.file-viewer.app

Limit

File Viewer is a preview component rather than a professional editor and does not promise native-app fidelity for every complex file.Read 1 Oct 2026 · doc.file-viewer.app

Modular packages

Teams can install individual renderers or choose Lite, Office, Engineering, or Full presets.Read 2 Oct 2026 · doc.file-viewer.app

Offline deployment

The documentation says runtime assets can be served from the application's own origin for offline or private deployments.Read 2 Oct 2026 · doc.file-viewer.app

Presets

Preset bundles cover lightweight text and media, Office documents, engineering formats, or the full published matrix.Read 1 Oct 2026 · doc.file-viewer.app

Read-only

The project describes File Viewer as a viewer rather than an editor.Read 2 Oct 2026 · github.com

Rendering

Built-in renderers do not require a conversion server; Workers, WASM, and fonts can be self-hosted.Read 2 Oct 2026 · github.com

Security and privacy

The maker describes the product as browser-local and self-hostable, allowing files and runtime assets to stay within the deployment environment.Read 1 Oct 2026 · doc.file-viewer.app

Where Specifiction places it

• File Viewer Software#19 of 317.4