Zero-Upload Privacy WASM Engine 20+ Formats

Docs Master Pro

Open, view, and edit any document format privately in your browser. No uploads. No accounts. 100% WebAssembly-powered.

Upload File

Drag and drop your file here

Processed locally

·Max 20MB

Supports DOCX, XLSX, PDF, PPTX, CSV, JSON, XML, HTML, MD, TXT, RTF, ODT & more

.PDF.DOCX.XLSX.PPTX.CSV.JSON.XML.HTML.TXT.MD.RTF.ODT.ODS.ODP.DOC.XLS.PPT

Universal Format Support

Every major document format, rendered with pixel-perfect fidelity

Word Processing

.DOCX.DOC.RTF.ODT.TXT.MD

Spreadsheets

.XLSX.XLS.CSV.ODS

Presentations

.PPTX.PPT.ODP

Documents & Code

.PDF.JSON.XML.HTML

Why Choose Docs Master?

Professional-grade document intelligence without sacrificing privacy.

Zero-Upload Privacy

Documents are processed 100% locally in your browser using WebAssembly. Your files never leave your device.

Blazing Fast WASM Engine

Hardware-accelerated WebAssembly rendering for instant document parsing, even for large, complex files.

High-Fidelity Preview

Pixel-perfect rendering for DOCX, XLSX tables, PPTX slides, and native PDF embedding with zoom controls.

Live Spreadsheet Editing

Edit XLSX and CSV cells directly in-browser and export the updated file without needing Microsoft Office.

Metadata Scrubbing

Strip author, editor history, and personal metadata from documents before sharing for maximum privacy.

Extract & Export

Extract individual PDF pages, export edited spreadsheets, and download original files — all offline.

How It Works

Open any document in three simple steps

Drop Your File

Drag & drop or click to upload any supported document format.

Instant Analysis

The WASM engine parses and renders your document with full fidelity.

View, Edit & Export

Browse, search, edit cells, and export — all in-browser, all private.

Built for Every Professional

Whether you're reviewing legal contracts, analyzing financial spreadsheets, or presenting to clients — Docs Master handles it all without ever sending your sensitive data to a third-party server.

Legal document review

Financial spreadsheet analysis

Academic paper reading

Client presentation prep

Code file inspection

Data export & conversion

Privacy-first archiving

Secure metadata removal

Works Everywhere

Any modern browser, any OS, no install needed.

Data Stays Local

Zero-server WASM processing keeps files on-device.

Instant Load

WASM engines spin up in milliseconds.

Rich Rendering

Images, tables, fonts — all faithfully reproduced.

Frequently Asked Questions

Everything you need to know about Docs Master Pro