DocumentReader
Open, edit and create Word documents, and read Excel workbooks, entirely in the browser. Files are parsed client-side and never leave your machine.
Built for the case where you need a document on a machine you would rather not trust with an upload. Tabs for several open files, a document outline or sheet list in the sidebar, find in document, side-by-side compare, and export to .docx or PDF.
Parsed documents go through a DOMPurify allowlist before they render, and the tests check that it really strips unsafe markup.
TYPESCRIPT
REACT
CLIENT-SIDE
2026