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Document Conversion

Convert DOCX to SDW Online — Free

Fast, free DOCX to SDW converter. No registration required.

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How to Convert

1

Upload your .docx file by dragging it into the upload area or clicking to browse.

2

Choose your output settings. The default settings work great for most files.

3

Click Convert and download your .sdw file when it's ready.

What is DOCX?

DOCX is the modern Microsoft Word format introduced in Office 2007. It's the standard format for editable documents in business and education.

Format Details

Full Name
Microsoft Word Document
Extension
.docx

Key Features

  • Editable
  • Microsoft Office
  • Rich formatting
  • Track changes

What is SDW?

SDW is the legacy document format from StarOffice/StarWriter, the predecessor to OpenOffice and LibreOffice. While no longer actively used, many archived documents exist in this format from the late 1990s and early 2000s.

Format Details

Full Name
StarOffice Writer Document
Extension
.sdw

Key Features

  • StarOffice legacy
  • LibreOffice compatible
  • Pre-ODF format
  • Archival

DOCX vs SDW

FeatureDOCXSDW
Full NameMicrosoft Word DocumentStarOffice Writer Document
Extension.docx.sdw
Best ForEditableStarOffice legacy

Frequently Asked Questions

We use advanced conversion technology to preserve fonts, formatting, tables, and page layout. Complex documents with unusual fonts or embedded objects may have minor differences, but content accuracy is always maintained.
Yes. Our OCR (Optical Character Recognition) technology extracts searchable text from scanned PDFs. Pro users get access to enhanced OCR for better accuracy on complex documents.
For PDF output, fonts are embedded to ensure your document looks the same everywhere. For other formats, we use the closest available system fonts to match the original styling.
All uploads use 256-bit SSL encryption. Files are automatically deleted within 2 hours. We never access, store, or share your document contents. GDPR compliant.
Password-protected files must be unlocked before conversion. Remove the password first, then upload for conversion. We cannot bypass document encryption.

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