PPSX to FAX Converter

Convert PPSX slides to FAX format — free online

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Slides to Fax-Ready Output

Transform PPSX presentation slides into Group 3 FAX images that integrate directly with fax software, fax servers, and legacy transmission systems.

Rapid Conversion

FAX images are compact monochrome files. The conversion from PPSX completes quickly, even for presentations with many slides.

No Local Software Needed

Convertio runs the entire PPSX to FAX conversion in the cloud. No fax utilities or image processing tools needed on your device.

How to convert PPSX 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

PPSX (PowerPoint Slideshow XML) is the Open XML counterpart to the legacy PPS format, introduced by Microsoft with Office 2007. Like PPTX, a PPSX file is a ZIP archive containing XML parts that describe slides, layouts, themes, and media assets according to the Office Open XML specification. The distinguishing characteristic is behavioral: opening a PPSX file launches the presentation directly in full-screen slideshow mode, bypassing the editing environment. This makes PPSX the preferred format for distributing finalized presentations where the audience should experience the content as a seamless visual narrative without exposure to the editing interface, slide sorter, or speaker notes panel. PPSX files support every visual feature available in PPTX including transitions, animations, embedded video and audio, hyperlinks, SmartArt, charts, and custom slide timings. One advantage is streamlined delivery — a PPSX file attached to an email or shared via a link opens as a polished presentation with a single click, requiring no instruction to the recipient. The XML-based foundation provides another benefit: PPSX files are typically much smaller than equivalent PPS files due to built-in ZIP compression, and their contents can be inspected or modified programmatically using standard XML tools. The format is supported for playback in PowerPoint, LibreOffice Impress, Google Slides (after upload), and various mobile presentation apps, ensuring broad cross-platform reach for distributed slide decks.
Developer: Microsoft
Initial release: January 30, 2007
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 PPSX to FAX?

FAX format produces monochrome images encoded for fax transmission — useful when you need to send slide visuals through traditional fax infrastructure.

How do I open FAX images?

Windows Fax Viewer, IrfanView, XnView, and most fax server software read Group 3 FAX images. ImageMagick can also process and display them.

Is FAX format always black and white?

Yes — fax uses monochrome encoding (CCITT Group 3 compression). All slide colors are converted to a high-contrast black-and-white representation.

When would I need FAX format?

FAX format is relevant for fax servers, legal document transmission, medical record archival, and any workflow that interfaces with fax machines.

Will text-heavy slides convert well?

Text converts clearly to FAX format, especially when using large, bold fonts. Fine details and small text may lose legibility at standard fax resolution.

Is PPSX to FAX conversion free?

Yes — Convertio handles this conversion at no cost. Premium tiers offer additional capacity for bulk or frequent conversions.