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.
| Conversions | Count |
|---|---|
| RB to LRF | 0 |
| RB to EPUB | 0 |
| RB to MOBI | 0 |
| RB to PDB | 0 |
| RB to SNB | 0 |
| RB to AZW3 | 0 |
| RB to TCR | 0 |
| RB to FB2 | 0 |
| RB to CSV | 0 |
| Conversions | Count |
|---|---|
| AZW3 to RB | 1 |
| EPUB to RB | 1 |
| MOBI to RB | 1 |
| PDB to RB | 1 |
| SNB to RB | 1 |
| FB2 to RB | 0 |
| LRF to RB | 0 |
| TCR to RB | 0 |