SDW Converter
Convert files to and from SDW online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is an SDW file?
SDW is the legacy word-processing format used by StarOffice Writer and early OpenOffice.org releases, the predecessor suites to LibreOffice Writer. It stores text, formatting, and embedded objects using StarOffice's original binary document model, later replaced by the OpenDocument Text (ODT) standard. SDW files are mostly encountered today when converting old StarOffice document archives to modern formats.
How to open an SDW file
LibreOffice Writer opens SDW files directly via its built-in legacy StarOffice format support, automatically converting the document into its modern editing environment. Apache OpenOffice Writer also retains compatibility with this older format.
SDW Technical Info
- Full Name
- StarOffice/StarWriter Document
- Developed By
- StarDivision / Sun Microsystems
- Initial Release
- 1996
- MIME Type
- application/vnd.stardivision.writer
Why RunConvert
The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
3,000+ conversions supported
Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
Free - no account needed
Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.