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PGX to SXW Converter

Free PGX to SXW document conversion tool

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Quick Turnaround

The converter processes PGX images rapidly. Most PGX to SXW conversions finish within moments of starting.

Batch Processing

Queue multiple PGX files and convert them all to SXW in a single session. Each file processes in parallel for maximum speed.

Secure Processing

All PGX uploads are encrypted in transit. Files are deleted immediately after conversion — your SXW results are available for 24 hours only.

How to convert PGX to SXW

1

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

2

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

3

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

About formats

PGX is a simple single-component raster image format defined as part of the JPEG 2000 standard (ISO/IEC 15444) for use in conformance testing and verification of JPEG 2000 codec implementations. Introduced around 2000 alongside the JPEG 2000 specification itself, PGX files store a single image component (one color channel or grayscale plane) with a text header followed by raw pixel data, providing an unambiguous reference representation against which encoder and decoder outputs can be compared sample by sample. The header is a single ASCII line specifying endianness (ML for big-endian, LM for little-endian), signedness (+ for unsigned, - for signed), bit depth (1 to 32 bits), width, and height. The pixel data follows as raw binary values, each occupying the minimum number of bytes needed for the specified bit depth, with one value per pixel. For multi-component images (like RGB), each component is stored in a separate PGX file. The format's deliberate simplicity — no compression, no metadata, no multi-channel support — ensures there are no ambiguities in interpretation that could mask codec bugs. One advantage is verification precision: PGX's uncompressed, exactly-specified representation allows bit-exact comparison of decoded JPEG 2000 output against reference images, essential for certifying that a codec implementation conforms to the standard. The format's role in the JPEG 2000 conformance testing framework means it is implemented by every serious JPEG 2000 codec (OpenJPEG, Kakadu, etc.) and used in the official ISO conformance test suite. PGX files can also be processed by ImageMagick and various JPEG 2000 development tools.
Initial release: 2000
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

Frequently Asked Questions

Why convert PGX to SXW?

SXW embeds the image in a structured document layout, making PGX content easy to distribute, annotate, and print anywhere.

What programs open SXW files?

View SXW files using the appropriate reader application — free options exist for every major operating system and mobile platform.

Where do PGX files come from?

PGX files originate from JPEG 2000 conformance test suites. They serve as reference images for validating standard-compliant decoders and encoders.

Which platforms are supported?

Every platform with a modern browser works — Windows, macOS, Linux, ChromeOS, iOS, and Android all run the PGX to SXW converter perfectly.

How many files can I convert at a time?

You can upload and convert multiple PGX files to SXW in a single session. Each conversion processes in parallel for faster results.