How to open a code or text file online
Three steps, a few seconds, no software.
Open your .SDW file
Drop it on the box, choose it from your device, or paste the text straight in.
View it instantly
Your .SDW file opens neatly formatted with line numbers.
Search, copy or download
Search the text, jump to any line, then copy what you need or download a clean copy.
What is a .SDW file?
Plain text that programs, servers and people write every day.
An SDW file is a word-processing document from StarWriter, the writer component of StarOffice, a 1990s office suite that preceded OpenOffice.org and LibreOffice. Open it with LibreOffice Writer (free, all platforms) and immediately save it as ODT or DOCX, because LibreOffice can read SDW but cannot save back to the format. Apache OpenOffice 4.0 and later dropped SDW support entirely.
Programs that open .SDW files
| Full name | StarWriter Document |
|---|---|
| Developer | StarDivision GmbH (acquired by Sun Microsystems 1999; Oracle 2010) |
| First released | circa 1985 (StarWriter 1.0 for DOS); Windows version with .sdw: StarOffice 3.x, early 1990s |
| Category | Text & Code |
| MIME type | application/vnd.stardivision.writer |
| Signature | D0 CF 11 E0 A1 B1 1A E1 OLE2 Compound Document header (same as .doc, .xls, .ppt) |
Related viewers
Every viewer is free to use.
Frequently asked questions
Is my .SDW file uploaded anywhere?
No. The file is read and highlighted for you.
Why do some characters look wrong (é, ł)?
That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.
Can it handle huge log files?
Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.
How do the log level filters work?
We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.
Can I edit the file?
This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.
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