G4 to RB Converter

Convert your g4 files to rb online & free

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Group 4 FAX

G4 is a method to compress black and white images without losing quality. It is used for fax machines and as a one of the compression types for the TIFF format. G4 treats a picture as black dots and lines on a white page (less file size will be achieved if there are less black dots and lines).

RB Converter

Rocket eBook

Was developed for the first mass-produced e-book reader – Rocket eBook. The format is written in Ruby. RB files are containers holding the entire content for a Rocket eBook device. It has DRM protection capability which is not used in the books published at present due to the format’s lack of popularity.

How to convert G4 to RB

Step 1

Upload g4-file(s)

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

Step 2

Choose "to rb"

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

Step 3

Download your rb

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