SXW to PGM Converter

SXW to PGM — portable grayscale images from documents

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Grayscale Simplicity

PGM provides clean grayscale output — perfect for document page images that feed into analysis and processing tools.

Fast Processing

Simple PGM files render quickly. Cloud servers deliver the result from SXW in seconds without any local overhead.

Remote Rendering

All processing happens on Convertio servers. Your device stays idle while the SXW pages are rendered to PGM.

How to convert SXW to PGM

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose pgm or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your pgm file right afterwards

About formats

SXW is the word processing document format used by StarOffice 6.0 and OpenOffice.org 1.0, developed by Sun Microsystems and released in 2002. The format was one of the first mainstream office document formats to adopt an XML-based architecture, packaging document content, styles, metadata, and embedded media in a ZIP archive — a structural approach that directly influenced the later OpenDocument Format (ODF). The content.xml file describes the document body using XML elements for paragraphs, headings, lists, tables, footnotes, and inline formatting, while styles.xml defines the styling rules and meta.xml carries document properties. SXW represented a significant milestone in open-source office software, demonstrating that a non-proprietary XML format could handle the full range of word processing features including change tracking, indexes, cross-references, and complex page layouts. One advantage was transparency and openness — the XML structure made document content inspectable, transformable, and processable using standard tools, a sharp contrast to the opaque binary formats dominant at the time. The format's role as a technological precursor to the ODF standard is another historical significance: the OASIS OpenDocument Technical Committee used the OpenOffice.org XML format (including SXW) as the starting point for developing ODF 1.0. While SXW was superseded by ODT with OpenOffice.org 2.0 in 2005, existing SXW documents can be opened by LibreOffice, Apache OpenOffice, and document conversion tools.
Developer: Sun Microsystems
Initial release: 2002
PGM (Portable Graymap) is the grayscale member of the Netpbm image format family, created by Jef Poskanzer in 1988 as part of the Pbmplus toolkit for Unix systems. PGM stores single-channel intensity images where each pixel holds a gray value from 0 (black) to a user-specified maximum (typically 255 for 8-bit or 65535 for 16-bit). The format exists in ASCII (magic number P2), where pixel values are written as decimal text numbers separated by whitespace, and binary (magic number P5), where values are stored as raw bytes. Both variants begin with a header specifying the magic number, width, height, and maximum gray value. PGM was designed as the grayscale intermediate in Netpbm's convert-process-convert pipeline philosophy: source images from any format are converted to PGM, processed using Netpbm's extensive command-line tool library, then converted to the target format. One advantage is format transparency — the ASCII variant makes image data directly readable by humans and trivially processable by text tools like awk and grep, invaluable for debugging and education. The scientific and computer vision community's adoption is another strength: PGM's straightforward single-channel representation makes it a natural format for image analysis algorithms, and many academic papers and course materials use PGM examples. The format is supported by ImageMagick, GIMP, and countless image processing libraries, and remains standard input for many research tools and benchmarks.
Developer: Jef Poskanzer
Initial release: 1988

Frequently Asked Questions

Why convert SXW to PGM?

PGM is a simple grayscale format used in image processing. It is ideal for feeding document page images into analysis tools.

What opens PGM files?

Netpbm tools, GIMP, IrfanView, XnView, and ImageMagick all handle PGM files natively on any operating system.

Is PGM grayscale only?

Yes — PGM stores grayscale images. Your SXW pages are rendered in shades of gray, which suits text-heavy documents well.

Is this free?

Standard SXW to PGM conversions are free. Premium accounts on Convertio unlock extended limits and priority processing.

Does it work on Linux?

Yes — the web converter runs in any browser. PGM is especially popular in Unix/Linux environments and imaging pipelines.

How fast is it?

PGM files are simple and process quickly. Most conversions from SXW complete in just a few seconds on cloud servers.