FAX to SIXEL Converter

Online tool — convert FAX to SIXEL format free

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Cloud Conversion

The FAX to SIXEL conversion runs on cloud servers — no strain on your device, no downloads needed.

Document Recovery

Extract visual content from FAX files and save as SIXEL — ideal for archiving important fax correspondence.

Safe Conversion

Your FAX file is removed right after processing. The SIXEL download is auto-deleted within 24 hours.

How to convert FAX to SIXEL

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

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

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

About formats

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

SIXEL (Six Pixel) is a bitmap graphics encoding format created by Digital Equipment Corporation (DEC) in 1983 for rendering images on character-cell printers and video terminals. The name derives from the encoding's fundamental unit: a column of six pixels represented by a single ASCII character. Each printable character in the sixel data stream (ASCII 63-126) encodes a 6-pixel vertical column, with the character's binary value determining which pixels are on or off. Color is specified through register-based palette control: a Select Color Sequence assigns an HLS or RGB color value to a numbered register, and subsequent sixel characters use that color until another register is selected. The encoding supports raster attributes for specifying pixel aspect ratio and image dimensions, repeat sequences (! followed by a count and character) for run-length compression of identical columns, and $ (carriage return) and - (new line) for navigating the sixel grid. DEC implemented SIXEL support in their VT240, VT241, VT330, and VT340 terminals, as well as multiple printer models. One advantage of the SIXEL encoding is its ASCII-clean nature: the data stream consists entirely of printable characters and standard control sequences, meaning SIXEL graphics can be transmitted through any text-based communication channel — serial terminals, SSH sessions, telnet connections — without requiring binary-safe transport or protocol modifications. The format's modern renaissance provides another remarkable dimension: after decades of obscurity, SIXEL support has been implemented in numerous contemporary terminal emulators, enabling inline image display in command-line workflows. SIXEL output can be generated by ImageMagick, libsixel, chafa, and various plotting libraries.

Developer: Digital Equipment Corporation

Initial release: 1983

Frequently Asked Questions

Why convert FAX to SIXEL?

Digitizing fax files to SIXEL format enables easy viewing, sharing, and embedding across modern platforms.

What reads SIXEL format?

View SIXEL files with terminal emulators with Sixel support like xterm or mlterm — all handle this format natively.

Does the converter preserve full FAX resolution?

All original clarity from FAX files is maintained. The SIXEL output is pixel-accurate for monochrome content.

Are there fees for FAX to SIXEL conversion?

No fees for standard use. Premium plans provide enhanced speed, higher limits, and priority queue access.

Is simultaneous FAX file conversion possible?

Yes — drop several FAX files at once. Each is processed and delivered as a separate SIXEL download.

How long does FAX to SIXEL take?

Conversion usually completes in seconds. Cloud-based processing keeps everything fast regardless of your device.

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FAX to TIFF

FAX to JPEG

FAX to PNG

FAX to BMP

FAX to JP2

FAX to JIF

FAX to DXF

FAX to DOT

FAX to XPM

FAX to WBMP

FAX to GIF

FAX to TGA

FAX to SVG

FAX to PCX

FAX to ICO

FAX to CUR

FAX to PBM

FAX to PGM

FAX to PPM

FAX to WEBP

FAX to EXR

FAX to FTS

FAX to G3

FAX to HDR

FAX to HRZ

FAX to IPL

FAX to MAP

FAX to MNG

FAX to MTV

FAX to OTB

FAX to PAL

FAX to PALM

FAX to PAM

FAX to PCD

FAX to PCT

FAX to PDB

FAX to PFM

FAX to PICON

FAX to PICT

FAX to PNM

FAX to PSD

FAX to RAS

FAX to RGB

FAX to RGBA

FAX to RGBO

FAX to SGI

FAX to SUN

FAX to UYVY

FAX to VIFF

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FAX to YUV

FAX to JBG

FAX to JBIG

FAX to HEIC

FAX to HEIF

FAX to G4

Specific converters

CSV to SIXEL

XLSX to SIXEL

PDF to SIXEL

JPG to SIXEL

XLS to SIXEL

PNG to SIXEL

DOCX to SIXEL

JPEG to SIXEL

DOC to SIXEL

TXT to SIXEL

GIF to SIXEL

BMP to SIXEL

PPTX to SIXEL

SVG to SIXEL

ODT to SIXEL

JFIF to SIXEL

HTML to SIXEL

XPS to SIXEL

WEBP to SIXEL

ABW to SIXEL

EXR to SIXEL

EMF to SIXEL

DCM to SIXEL

DBK to SIXEL

KWD to SIXEL

SXW to SIXEL

AW to SIXEL

3FR to SIXEL

ARW to SIXEL

AVIF to SIXEL