Convert Base64 to SXW

Why Convert Base64 to SXW?

Converting Base64 encoded data to SXW format is necessary when legacy StarOffice or early OpenOffice.org documents have been encoded for archival storage, email transmission, or database preservation and need to be restored to their original document form. Organizations that adopted StarOffice or OpenOffice.org in the early 2000s may have archives of SXW documents encoded as Base64 strings in document management systems or backup databases.

SXW was the native file format for StarOffice Writer and OpenOffice.org Writer before the adoption of the OASIS Open Document Format (ODF) standard. The format uses a ZIP-compressed archive containing XML files for document content, styles, metadata, and settings. This architecture, which influenced the later ODF and OOXML standards, provides efficient storage with clear separation of content and presentation. When SXW files are Base64 encoded, the binary ZIP data is safely converted to text for storage in systems that cannot handle binary data directly.

Government agencies, educational institutions, and non-profit organizations that migrated to open-source office suites in the early 2000s often created extensive document libraries in SXW format. As these organizations modernize their document management infrastructure, Base64-encoded SXW files in legacy databases need to be decoded for migration to current formats like ODT or DOCX. The decoded SXW files can be opened in LibreOffice and saved in modern formats while preserving formatting and content.

While SXW is a legacy format that has been superseded by ODT, the ability to decode Base64-encoded SXW files remains important for digital preservation and archival access. LibreOffice and Apache OpenOffice continue to fully support opening and editing SXW documents, ensuring that content from the early open-source office suite era remains accessible. Converting Base64 to SXW is the first step in restoring and potentially modernizing these historical documents.

Key Benefits of Converting Base64 to SXW:

• Archive Recovery: Restore legacy StarOffice documents from encoded storage
• Document Migration: Decode SXW files as a step toward converting to modern formats
• Historical Access: Open documents from early OpenOffice.org installations
• Database Extraction: Convert Base64-stored documents back to editable SXW files
• LibreOffice Compatibility: Decoded files open directly in current LibreOffice versions
• Content Preservation: Maintain all formatting, styles, and metadata from originals
• Digital Preservation: Support long-term archival access to legacy office documents

Practical Examples

Example 1: Restoring an Archived Government Document

Input Base64 file (policy-doc.b64):

UEsDBBQAAAAIAHRhV1lYkR7cMgAAADMAAAAIABwAbWlt
ZXR5cGVVVAkAA1JhV1lSYV9ZdXgLAAEE6AMAAAToAwAA
C0ktTtZRCM8vyklRBABQSwMEFAAAAAgAdGFXWQAAAAAC
AAAAAAAACwAcAGNvbnRlbnQueG1sVVQJAANSYV9ZUg==

Output SXW file (policy-doc.sxw):

Restored SXW document containing:
- Original policy document text
- Formatted headings and paragraphs
- Tables with data
- Document metadata (author, date)
- Compatible with LibreOffice Writer
- Ready for conversion to ODT or DOCX
- All styles and formatting preserved

Example 2: Recovering Academic Papers

Input Base64 file (thesis.b64):

UEsDBBQAAAAIAIRhV1kA
AAAAAAAAAAAAAAAIABAA
bWltZXR5cGVVWAwAAQTo
AwAABOgDAABQSwMEFAAA
AAgAhGFXWQAAAAACAAAA
AAAADwAQAGNvbnRlbnQu
eG1sVVgMAA==

Output SXW file (thesis.sxw):

Restored academic document:
- Title page and abstract
- Formatted chapter headings
- Footnotes and bibliography
- Tables and figures
- Page numbering and headers
- Opens in LibreOffice Writer
- Can be saved as ODT or PDF

Example 3: Extracting Business Templates

Input Base64 file (invoice-template.b64):

UEsDBBQAAAAIAJRhV1kA
AAAAAAAAAAAAAAAIABAA
bWV0YS54bWxVWAwAAQTo
AwAABOgDAABQSwMEFAAA
AAgAlGFXWQAAAAACAAAA
AAAADQAQAHN0eWxlcy54
bWxVWAwA

Output SXW file (invoice-template.sxw):

Restored business template:
- Invoice layout with tables
- Company header formatting
- Placeholder fields for data
- Custom styles and fonts
- Editable in LibreOffice Writer
- Convertible to modern ODT format
- Print-ready page layout

Frequently Asked Questions (FAQ)

Q: What is the SXW format?

A: SXW is the native document format used by StarOffice Writer (versions 6.0-7) and early OpenOffice.org Writer (version 1.x). It is a ZIP-compressed archive containing XML files for document content, styles, metadata, and application settings. SXW was developed by Sun Microsystems and served as the foundation for the OASIS Open Document Format (ODF) standard that replaced it.

Q: Can modern software open SXW files?

A: Yes. LibreOffice Writer and Apache OpenOffice Writer fully support opening, editing, and saving SXW files. You can also convert SXW files to modern formats like ODT (Open Document) or DOCX (Microsoft Word) using the "Save As" function in these applications. Microsoft Word has limited import support for SXW files through compatibility filters.

Q: Why would SXW documents be stored as Base64?

A: SXW files are binary (ZIP-compressed), which means they cannot be stored directly in text-only systems like database text fields, XML documents, or email body text. Base64 encoding converts the binary ZIP data into a safe ASCII string that can be stored in any text-based system. This was common in early document management systems and email archival solutions.

Q: Should I convert SXW to a modern format after decoding?

A: Yes, it is recommended to convert SXW files to ODT (Open Document Text) or DOCX after decoding them from Base64. Modern formats offer better feature support, wider software compatibility, and active development. Open the decoded SXW file in LibreOffice Writer and use File, Save As to convert to ODT or DOCX while preserving your document content and formatting.

Q: What is the difference between SXW and ODT?

A: SXW is the older StarOffice/OpenOffice.org format, while ODT is the standardized OASIS Open Document Format. Both are ZIP-compressed archives containing XML, but ODT uses a standardized XML schema (ISO/IEC 26300), has broader software support, and includes more features. ODT replaced SXW as the default format when OpenOffice.org 2.0 was released in 2005.

Q: Will all document formatting be preserved?

A: Base64 encoding and decoding preserves every byte of the original SXW file. All formatting, styles, embedded images, tables, headers, footers, and metadata will be identical to the original document. The decoded file is a perfect copy of what was originally encoded, ensuring no data loss during the conversion process.

Q: How is SXW related to StarOffice?

A: SXW was the native Writer format for StarOffice, a commercial office suite developed by StarDivision and later acquired by Sun Microsystems in 1999. Sun open-sourced the code as OpenOffice.org, which continued using SXW until version 2.0 adopted the ODF standard. After Oracle acquired Sun, the community forked the project to create LibreOffice, which still supports SXW files.

Q: Can I batch convert multiple Base64-encoded SXW files?

A: Yes. You can upload multiple Base64 files for conversion to SXW format. For large-scale migration projects involving hundreds or thousands of encoded SXW documents, you can use our converter to decode each file individually. After decoding, LibreOffice command-line tools (soffice --convert-to) can batch convert the SXW files to modern ODT or DOCX format.