Click the "Select File" button above, and choose your RB file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.
Convert RB to another file type
The converter easily converts your RB file to various formats - free and online. No Ruby or or other Developer software needed.
RB to PDF
RB to TXT
RB to TCR
RB to PDB
RB to FB2
RB to LIT
RB to MOBI
RB to EPUB
RB to AZW3
RB to TXTZ
RB to DOCX
RB to HTMLZ
Convert a file to RB
The converter also works in reverse, so you can convert other "Scripting Language File" formats to RB without using software like Ruby or a similar tool.
PML to RB
RTF to RB
DOCX to RB
AZW3 to RB
HTMLZ to RB
TXTZ to RB
CB7 to RB
AZW to RB
LRF to RB
TXT to RB
HTML to RB
FBZ to RB
About RB files
The .RB extension primarily identifies source code scripts written in Ruby, an interpreted, high-level object-oriented programming language. These files are the backbone of modern web applications (via frameworks like Ruby on Rails) and game development scripts used in software like RPG Maker XP. While text-based, raw .RB files are difficult to share with non-developers; they require a specific runtime environment to execute and lack formatting when opened in standard word processors. Users often need to convert these scripts into PDF documents to create readable documentation, code snippets for teaching, or archiving project logic without requiring the recipient to install the Ruby interpreter. Additionally, the .RB extension historically refers to Rocket eBook files, a legacy digital book format from the late 1990s designed for the NuvoMedia Rocket eBook device. These obsolete files are generally incompatible with modern e-readers like Kindle or Apple Books, creating a significant barrier to accessing the content. To modernize these eBooks, conversion to EPUB or PDF is essential. Whether you are a developer finalizing code documentation or a reader trying to salvage an old digital library, converting .RB files resolves compatibility issues and ensures content accessibility.
Use Convert.Guru to open and convert your RB file.
If you want to convert RB file to RBZ, RM, MYR, RC, JS, TS, PY, JAVA, CPP, C, CS or PHP, you can use Ruby or similar software from the "Ruby Source Code" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to RB, try Ruby or another comparable tool in the "Ruby Source Code" category.
The RB Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our RB converter.