🔀 Multi-Format Extension (.DOC)

Multiple Formats Use the .DOC Extension

The .doc extension represents 2 distinct file formats depending on your application or industry. Select a format variant below to jump to its specification:

Format 1 Plain text and general documents

Legacy MS Word Binary Document

ZumiFiles Engine: OfficeParser / DocMentis binary DOC container parser

View Plain text and general documents Specs ↓

Format 2 Plain text and general documents

PalmDoc Mobile eBook Document

ZumiFiles Engine: PalmDoc LZ77 text decompressor & eBook reader

View Plain text and general documents Specs ↓

⚔️ Format Comparison (.DOC Variants)

Property	Variant 1: Legacy MS Word Binary Document	Variant 2: PalmDoc Mobile eBook Document
Category	Plain text and general documents	Plain text and general documents
File Header / Signature	UTF-8 source text (import / const / type / interface)	UTF-8 source text (import / const / type / interface)
ZumiFiles Engine	OfficeParser / DocMentis binary DOC container parser	PalmDoc LZ77 text decompressor & eBook reader
Browser Support	✓ PREVIEWABLE (High)	✓ PREVIEWABLE (High)

.DOC Container • Multi-Format Extension

PREVIEWABLE

DOC File (.doc)

Open and inspect supported .DOC files privately inside your browser. Your files remain 100% local and are never uploaded to any server or cloud API.

Launch .DOC Viewer in ZumiFiles

📋 Detailed Format Specifications

2 Distinct Formats for .DOC

Format 1

Legacy MS Word Binary Document (.doc)

Plain text and general documents • ✓ PREVIEWABLE

ZumiFiles Engine: OfficeParser / DocMentis binary DOC container parser

What is an .DOC File (Legacy MS Word Binary Document)?

Legacy Microsoft Word documents (.doc) store rich text formatting, embedded OLE objects, tables, images, and macros in Microsoft Compound File Binary Format (CFBF).

Associated Software & Origin

Created by Microsoft Word 97–2003. Opened and edited in Microsoft Office, LibreOffice Writer, Apple Pages, and Google Docs.

Data Structure & Characteristics

Binary OLE container consisting of WordDocument streams, Fib (File Information Block), and Table streams.

What ZumiFiles Can Inspect

ZumiFiles parses binary OLE CFBF structures using client-side OfficeParser / DocMentis to extract text, tables, styles, and document metadata.

⚡ ZumiFiles Engine Specs for Legacy MS Word Binary Document

✓

Technical Engine: OfficeParser / DocMentis binary DOC container parser

✓

Client-Side Security: 100% in-browser sandboxed decoding with zero network server uploads.

✓

Sidecar Metadata: Attach tags, 5-star ratings, custom color tints, and notes via portable .{filename}.json sidecars.

Format 2

PalmDoc Mobile eBook Document (.doc)

Plain text and general documents • ✓ PREVIEWABLE

ZumiFiles Engine: PalmDoc LZ77 text decompressor & eBook reader

What is an .DOC File (PalmDoc Mobile eBook Document)?

Legacy Microsoft Word documents (.doc) store rich text formatting, embedded OLE objects, tables, images, and macros in Microsoft Compound File Binary Format (CFBF).

Associated Software & Origin

Created by Microsoft Word 97–2003. Opened and edited in Microsoft Office, LibreOffice Writer, Apple Pages, and Google Docs.

Data Structure & Characteristics

Binary OLE container consisting of WordDocument streams, Fib (File Information Block), and Table streams.

What ZumiFiles Can Inspect

ZumiFiles parses binary OLE CFBF structures using client-side OfficeParser / DocMentis to extract text, tables, styles, and document metadata.

⚡ ZumiFiles Engine Specs for PalmDoc Mobile eBook Document

✓

Technical Engine: PalmDoc LZ77 text decompressor & eBook reader

✓

Client-Side Security: 100% in-browser sandboxed decoding with zero network server uploads.

✓

Sidecar Metadata: Attach tags, 5-star ratings, custom color tints, and notes via portable .{filename}.json sidecars.

Related File Formats & Viewers

Inspect other supported formats within the Multi-Format Extension suite:

Flexible Ways to View Files in ZumiFiles

ZumiFiles adapts to your exact workflow. Choose how you want to open and inspect your files:

1. Browse Local Directory

Mount entire project folders directly from your computer using the browser's File System Access API. Navigate nested subfolders with dual-pane split screens.

2. Instant Single-File Preview

Drag and drop or select a single file to inspect it instantly in a sandboxed viewport. Perfect for quick checks without mounting whole directories.

3. Load Remote File URL

Paste any public web URL to fetch and render remote documents, 3D models, code files, or spreadsheets directly inside your browser.

Launch .DOC Viewer in ZumiFiles

Explore all 1,750+ formats in the ZumiFiles File Format Matrix.