ZrimoAny document. One canvas.

Render Office, PDF, images and structured data inside your web app. Files stay in the browser; Rust/WASM modules load only when a format needs them.

Open React demo

Get started

View on GitHub

Broad format coverage

DOCX, XLSX, PPTX, qualified Word DOC, legacy XLS/PPT, PDF, raster and TIFF images, SVG, CSV and TSV.

Format support

Browser-private

Documents are parsed and rendered locally. There is no conversion service, telemetry, or implicit fetch of document relationships.

Security model

Embeddable by design

Use the built-in UI, hide it and drive ViewerApi from React, or work headlessly with page rendering and text maps.

Integration modes

Multilingual

Lazy self-hosted fallback fonts cover Latin, Cyrillic, CJK, Arabic scripts and the supported Indic writing systems.

Font coverage

Real interactions

Virtualized pages and sheets, pan, zoom, fit modes, search, selectable text, multi-cell selection and TSV clipboard output.

Viewer controls

Virtualized and bounded

Pages and sheets stay virtualized around the viewport, while configurable limits bound input, decoded pixels, text maps and worker time.

Performance model

0 uploadsLocal files stay inside the browser runtime.

3 modesBuilt-in UI, custom framework controls, or headless.

2 licensesChoose MIT or Apache-2.0 for your integration.

A small API with room to customize

import { ViewerClient } from "@zrimo/viewer";
import "@zrimo/viewer/styles.css";

const client = ViewerClient.create({
  assetBaseUrl: new URL("/zrimo-assets/", location.href),
});
const viewer = client.createViewer({
  container: document.querySelector("#viewer")!,
  ui: true,
  fit: "width",
});

await viewer.load(file, { fileName: file.name });

The React demo runs the real package and shows all three integration modes. Nothing is uploaded when you open a document.