RW2 to FAX Converter

Convert RW2 images to FAX format online — fast and free

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Cloud Processing

The RW2 to FAX conversion runs entirely on cloud servers — your computer stays fast and responsive while the heavy processing happens remotely.

User-Friendly Tool

Converting RW2 to FAX is as simple as drag, pick, and click. The interface is designed for speed and clarity — even first-time users get results instantly.

Universal Access

The converter runs in any modern web browser. Use it on your desktop, laptop, tablet, or smartphone — no platform restrictions.

How to convert RW2 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

RW2 is the proprietary RAW image format used by Panasonic Lumix digital cameras, introduced in 2008 with the Lumix DMC-G1 — the world's first Micro Four Thirds mirrorless camera — and used across the entire Lumix lineup including the full-frame S-series. RW2 files capture the unprocessed 12-bit or 14-bit readout from the camera's CMOS sensor in its native Bayer mosaic pattern, stored in a TIFF-based container with lossy or lossless compression options depending on the camera model. The format records extensive metadata through Panasonic's proprietary MakerNote tags, including lens identification for both native and adapted optics, body and lens firmware versions, image stabilization data from Panasonic's Dual I.S. system, and Photo Style settings (Standard, Vivid, Natural, L.Monochrome, Cinelike D/V, and others). RW2 files from video-centric models like the GH series also store the settings context for their renowned video capabilities, though the RAW files themselves are still-image captures. Panasonic cameras introduced several innovations — contrast-detect AF, DFD (Depth from Defocus) focusing, and Dual Native ISO — and the RW2 format preserves the data needed to leverage these technologies during post-processing. One advantage is the format's connection to Panasonic's imaging innovation: RW2 files from cameras like the GH5 and S1H preserve the sensor output from bodies at the intersection of stills and cinema, valued by hybrid shooters. The format is supported by Adobe Lightroom, Capture One, DxO, Panasonic's SILKYPIX-based RAW converter, dcraw, and RawTherapee.
Developer: Panasonic
Initial release: 2008
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 RW2 to FAX?

RW2 files hold unprocessed Panasonic sensor data that standard viewers ignore — converting to FAX lets you view and share Lumix photos anywhere.

What software can open FAX?

Open FAX files using Windows Fax Viewer, IrfanView, XnView, and fax processing software.

Does converting RW2 to FAX affect quality?

Your RW2 image data is processed carefully during conversion. The resulting FAX retains the maximum quality the target format can support.

How fast is the RW2 to FAX conversion?

Speed depends on file size, but most RW2 to FAX conversions complete in under a minute. Server-side processing ensures quick turnaround.

Can I convert multiple RW2 files to FAX at once?

Yes — upload several RW2 images at the same time and they will all be converted to FAX in a single batch for convenient download.

Is my RW2 file safe during conversion?

Your files are handled securely. The RW2 upload is erased right after processing, and the resulting FAX is purged from servers within 24 hours.