Convert Documents to Any Extension

Microsoft Word 97-2003 Document - legacy binary file extension used by older Word versions. Supports rich text formatting, images, tables, and complex layouts. Maximum compatibility with legacy systems and older Microsoft Office versions (Office 97-2007). File sizes typically larger than modern DOCX. Common in corporate archives, legacy document management systems, and environments requiring backwards compatibility. Still widely supported but superseded by DOCX for new documents.

Microsoft Word 2007+ Document - modern XML-based extension providing better compression (40-75% smaller than DOC), improved recovery from corruption, and enhanced features. Open XML standard with better data extraction capabilities. Supports all Word features including styles, themes, SmartArt, advanced formatting, and embedded objects. Industry standard for word processing. Native format for Microsoft Word 2007+, compatible with Google Docs, LibreOffice, and all modern office suites. Essential for professional documents, collaborative editing, and modern workflows.

OpenDocument Text - open standard file extension for word processors developed by OASIS consortium. Native format for LibreOffice Writer and Apache OpenOffice Writer. XML-based structure ensuring long-term accessibility and vendor independence. Supports advanced formatting, styles, images, tables, and all standard word processing features. Excellent for open-source environments, government documents (mandated in many countries), and avoiding vendor lock-in. Free from licensing restrictions and patent concerns.

Rich Text Format - universal document extension developed by Microsoft (1987) for cross-platform text exchange. Readable by virtually all word processors (Word, WordPad, LibreOffice, Google Docs, Pages). Supports basic formatting (fonts, colors, styles, tables) without complex features. Larger file sizes than modern formats but maximum compatibility. Perfect for sharing formatted documents across different systems, email attachments ensuring readability, and legacy system compatibility. Reliable intermediate format for document conversion.

Word Macro-Enabled Document - Microsoft Word file type that supports embedded VBA macros and automation scripts. Similar to DOCX but with programmable functionality allowing automated tasks, custom buttons, and complex workflows. Used in business environments for automated form filling, data processing, report generation, and custom document workflows. Slightly larger files due to macro code. Essential for organizations using document automation, custom business processes, and workflow optimization. Security note: Can contain executable code, so only open DOCM files from trusted sources.

Word Document Template - legacy template extension for Microsoft Word 97-2003 used as blueprints for creating new documents. Contains predefined styles, formatting, placeholder text, headers, footers, and page layouts that serve as starting points for standardized documents. When you open a DOT file, Word creates a new document based on the template, preserving the original template. Common in corporate environments for letterheads, invoices, reports, contracts, and standardized forms. Ensures brand consistency and saves time on document creation. Still compatible with modern Word versions but DOTX is preferred for new templates.

Word Template (XML format) - modern template file type for Microsoft Word 2007+ using Open XML standard. Creates new documents with predefined styles, themes, layouts, and content structure while keeping the template unchanged. Smaller file sizes than DOT through better compression. Supports all modern Word features including themes, building blocks, content controls, and advanced formatting options. Industry standard for professional document templates. Perfect for business stationery, form letters, report templates, branded documents, and standardized corporate communications. Ensures consistency across organization-wide documentation.

Word Macro-Enabled Template - Microsoft Word template format that combines template functionality with VBA macro support for automated workflows. Creates new documents with both predefined formatting AND programmable automation. Perfect for sophisticated business templates that need automatic data population, custom form validation, automated calculations, or integration with external data sources. Common in enterprise environments for complex forms, automated report generation, invoice systems, and workflow-driven documents. More powerful than DOTX but requires macro security considerations.

AbiWord Document - native file format for AbiWord, a free and open-source word processor that's lightweight and fast. XML-based format supporting basic word processing features including fonts, styles, images, tables, and lists. Designed for simplicity and speed rather than advanced features. Particularly popular in Linux environments, older computers with limited resources, and educational settings. Files are generally compatible with other word processors through conversion. Good choice when you need a simple, resource-efficient word processor without the complexity of Microsoft Office or LibreOffice. Ideal for basic letter writing, simple reports, and everyday document tasks.

Applix Word Document - proprietary format from Applixware (later VistaSource Applixware), an office suite popular on Unix and Linux systems in the 1990s and early 2000s. Primarily a historical format now largely obsolete but occasionally encountered in legacy business archives and old Unix-based systems. Supported basic word processing features including formatting, tables, and graphics. While Applixware itself is discontinued, some document converters maintain limited support for accessing old AW files. Mainly relevant for data migration projects, archival purposes, or accessing legacy business documents from organizations that used Applixware.

DocBook XML Document - semantic markup format designed specifically for technical documentation, software manuals, books, and articles. Unlike typical word processors, DocBook focuses on document structure and meaning rather than visual appearance. Content is tagged by purpose (chapter, section, procedure, code example) allowing single-source publishing to multiple formats (PDF, HTML, EPUB, man pages). Industry standard in technical writing, software documentation, and book publishing. Used by major tech companies, open-source projects, and technical publishers. Perfect for maintaining large documentation sets, multi-format publishing, and long-term document maintenance. Steep learning curve but powerful for technical content.

KWord Document - native format for KWord, the word processor component of KOffice (now Calligra Suite), primarily used in KDE desktop environments on Linux. Frame-based layout system allowing flexible document design with text, images, and objects positioned independently. Supports standard word processing features plus advanced layout capabilities. Less common than mainstream formats but still encountered in KDE/Linux environments and legacy KOffice workflows. Files can be converted to more universal formats when broader compatibility is needed. Mainly relevant for Linux users working within the KDE ecosystem or accessing old KOffice documents.

StarOffice Writer Document - native format for StarOffice Writer (precursor to OpenOffice and LibreOffice), used primarily in the late 1990s and early 2000s. XML-based format supporting comprehensive word processing features including styles, tables, images, and complex formatting. Historical significance as it influenced the development of the OpenDocument Format (ODT). While StarOffice is discontinued, the format is still supported by OpenOffice and LibreOffice for legacy document access. Commonly encountered when migrating old StarOffice installations or accessing archived documents from organizations that used StarOffice before transitioning to OpenOffice/LibreOffice. Convert to ODT or DOCX for modern compatibility.

Plain Text - simplest document format containing only unformatted ASCII or Unicode characters. No fonts, colors, images, or layout information. Universal compatibility across all platforms, text editors, and systems. Smallest possible file sizes. Perfect for notes, code, scripts, logs, and any situation requiring absolute simplicity and portability. Essential format for programming, configuration files, data exchange, and scenarios where formatting is unnecessary. Works on any device from mainframes to smartphones.

Microsoft Excel 97-2003 Workbook - legacy binary spreadsheet format supporting up to 65,536 rows and 256 columns per sheet. Contains formulas, formatting, charts, and multiple worksheets. Compatible with older Excel versions (Excel 97-2007). File size limited to ~30MB. Common in legacy business systems, old financial databases, and environments requiring Excel 97-2003 compatibility. Being replaced by XLSX but still encountered in corporate archives and legacy data systems.

Microsoft Excel 2007+ Workbook - modern XML-based spreadsheet format with 1,048,576 rows and 16,384 columns per sheet. Provides better compression (75% smaller than XLS), improved recovery from corruption, and enhanced features. Supports all Excel capabilities including formulas, pivot tables, charts, conditional formatting, and macros (in XLSM variant). Industry standard for spreadsheets. Compatible with Google Sheets, LibreOffice Calc, and all modern office suites. Essential for data analysis, financial modeling, and business intelligence.

OpenDocument Spreadsheet - open standard format for spreadsheet applications developed by OASIS. Native format for LibreOffice Calc and Apache OpenOffice Calc. XML-based structure ensuring data accessibility and vendor independence. Supports formulas, charts, multiple sheets, and standard spreadsheet features. Excellent for open-source workflows, government use (mandated by many countries), and avoiding Microsoft Office licensing. Free from proprietary restrictions with long-term document accessibility guarantees.

Comma-Separated Values - simple text format for tabular data where each line represents a row and commas separate columns. Universal data exchange format readable by all spreadsheet applications, databases, and programming languages. No formatting, formulas, or multiple sheets - pure data only. Smallest file sizes for tabular data. Perfect for data import/export, database operations, data analysis with Python/R, and sharing datasets. Essential format for data science, web applications, and system integration. Works with Excel, databases, and any data processing tool.

Microsoft PowerPoint 97-2003 Presentation - legacy binary format for slide presentations. Supports slides, animations, transitions, embedded media, and speaker notes. Compatible with older PowerPoint versions (PowerPoint 97-2007). File sizes larger than modern PPTX. Common in legacy presentation archives, older corporate training materials, and environments requiring backwards compatibility. Still playable but superseded by PPTX for new presentations. Found in archived presentations from pre-2007 era.

Microsoft PowerPoint 2007+ Presentation - modern XML-based format providing better compression (up to 75% smaller than PPT), improved recovery, and enhanced multimedia support. Supports all PowerPoint features including advanced animations, transitions, embedded videos, SmartArt, themes, and master slides. Industry standard for presentations. Native format for PowerPoint 2007+, compatible with Google Slides, LibreOffice Impress, and Keynote. Essential for business presentations, educational slideshows, and professional communication.

OpenDocument Presentation - open standard format for presentation software developed by OASIS consortium. Native format for LibreOffice Impress and Apache OpenOffice Impress. XML-based structure ensuring long-term accessibility. Supports slides, animations, transitions, multimedia, and standard presentation features. Excellent for open-source environments, government presentations, and avoiding vendor lock-in. Free from licensing restrictions. Compatible with PowerPoint through conversion but best used within open-source office suites.

Portable Document Format - universal document format developed by Adobe maintaining exact visual appearance across all platforms and devices. Preserves fonts, images, layouts, and formatting precisely. Industry standard for document distribution, official documents, forms, archival, and printing. Not designed for editing (though modern tools allow limited editing). Supports encryption, digital signatures, forms, annotations, and accessibility features. Essential for contracts, invoices, reports, e-books, and any document requiring consistent appearance. Most widely supported document format globally.

DjVu Document - specialized file format optimized for storing scanned documents, especially books, magazines, historical manuscripts, and image-heavy documents. Developed by AT&T Labs in the late 1990s specifically to solve the problem of high-quality document scanning with minimal file sizes. Uses advanced compression techniques separating text, line drawings, and photographic regions, achieving 5-10 times better compression than PDF for scanned materials. Particularly popular in digital libraries, academic archives, and historical document preservation. Supports multiple pages, OCR text layers for searchability, and annotations. Perfect for digitizing large book collections, archiving historical documents, and distributing high-quality scanned materials efficiently. Common in digital humanities, library science, and document preservation projects.

XML Paper Specification - Microsoft's alternative to PDF developed as a fixed-layout document format that preserves exact visual appearance across different systems. Introduced with Windows Vista as a built-in Windows document format. Uses Open XML and ZIP container technology. Supports fonts, images, vector graphics, metadata, digital signatures, and print-ready layouts. Native format for Microsoft's printing system. While technically capable, XPS never achieved widespread adoption outside the Windows ecosystem due to PDF's dominance. Mainly encountered in Windows environments, some government systems, and legacy workflows. Modern usage is limited as PDF remains the preferred universal fixed-layout format. Useful primarily for Windows-specific workflows or legacy document compatibility.

Open XML Paper Specification - evolved version of XPS standardized by Ecma International (ECMA-388) to create an open, vendor-neutral fixed-layout document format. Addressed some limitations of original XPS and attempted to provide a more open alternative to PDF. Supports high-quality printing, digital signatures, fonts embedding, and precise layout preservation. Despite standardization efforts, OXPS faces the same adoption challenges as XPS—PDF remains dominant for fixed-layout documents. Mainly relevant in specific enterprise environments, some government agencies preferring open standards, or when working with modern Windows printing systems. Limited support outside Windows ecosystem. Consider converting to PDF for better compatibility and wider software support.

Markdown - lightweight markup language using plain text formatting syntax for creating formatted documents. Simple symbols (* for italics, ** for bold, # for headings) convert to HTML. Human-readable in plain text. Perfect for README files, documentation, blogs, note-taking, and technical writing. Popular among developers, technical writers, and content creators. Supports headers, lists, links, images, code blocks, and basic formatting. Extremely portable and future-proof. Foundation of many static site generators and documentation systems.

HyperText Markup Language - standard markup language for web pages containing text, images, links, and multimedia. Readable in any web browser without special software. Supports styling (CSS), interactivity (JavaScript), and rich media embedding. Universal web standard since 1991. Perfect for web publishing, online documentation, email newsletters, and accessible content. Extremely portable with guaranteed long-term support. Can be converted from documents for web distribution or archived for offline viewing.

Electronic Publication - open standard e-book format based on HTML, CSS, and XML. Reflowable text adapts to any screen size. Supports fonts, images, metadata, table of contents, and CSS styling. Industry standard for e-books compatible with most e-readers (Kindle via conversion, Kobo, Nook, Apple Books, Google Play Books). Perfect for digital publishing, self-publishing, and distributing long-form content. EPUB 3 adds multimedia and interactivity. Essential format for authors, publishers, and digital libraries.