OXPS to FAX Converter

Convert OXPS to FAX — free fax image format output

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Fax-Ready Output

Get images optimized for fax transmission — monochrome and compressed for efficient telephony transfer.

Server-Side Work

No fax software needed on your device. Cloud servers handle the conversion remotely.

Quick Processing

FAX images are lightweight — conversion finishes almost instantly after uploading.

How to convert OXPS to FAX

1

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

2

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

3

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

About formats

OXPS (Open XPS) is a fixed-layout document format standardized as ECMA-388 in June 2009, representing an evolution of Microsoft's original XPS specification. The format packages fixed-layout pages, fonts, images, and metadata in a ZIP-based Open Packaging Conventions container — the same packaging framework used by DOCX, XLSX, and other Office Open XML formats. Each page is described using an XML markup language that specifies paths, glyphs, images, and canvas elements with precise coordinates, producing documents that render identically regardless of the viewing device or printer. OXPS incorporated several changes from the original XPS: the use of JPEG XR for high dynamic range images, support for the Open Packaging Conventions 2nd edition, and alignment with the Ecma standardization process. Windows 8 and later generate OXPS (rather than XPS) when printing to the Microsoft XPS Document Writer. One advantage is standards-based document fidelity — as an Ecma standard, OXPS provides a vendor-neutral, fully specified format for documents that must look identical everywhere they are rendered, essential for legal filings, regulatory submissions, and archival records. The fixed-layout model is another strength: unlike reflowable formats, OXPS documents preserve exact page composition including precise glyph positioning and vector graphics. Built-in support in Windows and the .NET framework provides native viewing and creation capabilities without third-party software.
Developer: Ecma International
Initial release: June 2009
FAX is a generic image file extension associated with facsimile transmission formats standardized by the ITU-T (formerly CCITT), with the underlying Group 3 compression standard ratified in 1980. FAX files typically contain monochrome (1-bit, black and white) image data compressed using the Modified Huffman (MH) encoding defined in ITU-T Recommendation T.4, which assigns variable-length codes to run lengths of consecutive white or black pixels along each scanline. The standard resolution for Group 3 fax is 204x98 dpi (normal mode) or 204x196 dpi (fine mode), reflecting the capabilities of thermal and laser fax machines of the era. FAX files encountered digitally are often raw Group 3 encoded bitstreams or TIFF wrappers with CCITT Group 3 compression (TIFF compression tag 3). The Group 3 encoding scheme is highly efficient for typical business documents — pages with mostly white space and black text — achieving compression ratios of 10:1 to 20:1 compared to uncompressed bitmaps. One advantage is universal fax system compatibility: Group 3 encoding is the mandatory baseline for all fax machines worldwide, meaning FAX files contain data in exactly the format transmitted over telephone lines, preserving the original fax data without transcoding losses. The format's role in business communications history provides another dimension — billions of fax transmissions using this encoding moved legal documents, medical records, and business correspondence for decades, and archived FAX files represent an important documentary record. FAX images can be viewed and converted using LibreOffice, ImageMagick, GIMP, and standard document management systems.
Developer: ITU-T
Initial release: 1980

Frequently Asked Questions

Why convert OXPS to FAX?

FAX format is specifically optimized for fax machine transmission — monochrome images with telephony-grade compression, ideal for sending OXPS document pages over fax lines.

What software handles FAX files?

Fax software like Windows Fax and Scan, document management systems, and image editors such as GIMP and IrfanView can open and process FAX format files.

Is FAX strictly a monochrome format?

Yes — FAX images are 1-bit black and white, specifically designed for text-heavy documents. The format prioritizes clarity of text over photographic detail.

How quickly does the conversion complete?

Cloud servers process OXPS to FAX in seconds. Monochrome output files are lightweight, so both conversion and download happen almost instantly.

Is OXPS to FAX conversion free?

Yes — Convertio provides free OXPS to FAX conversion for standard files. Premium plans unlock batch processing and higher throughput for office workflows.

Can I convert multiple OXPS files to FAX at once?

Yes — upload several OXPS documents and convert them all to FAX format in a single batch, saving time when preparing multiple pages for fax transmission.