Convert CBT files online for free
The converter easily converts your CBT file to various formats - free and online. No WinRAR or extra software needed.
The converter also works in reverse, so you can convert other E-Book formats to CBT with high quality output.
The .CBT file extension represents a Comic Book Tarball, which is essentially a standard TAR archive containing a sequence of image files (usually JPG or PNG) ordered for reading. Unlike its more popular siblings, CBZ (ZIP) and CBR (RAR), the .CBT format is uncompressed, relying purely on the TAR archiving method to bundle pages together.
While efficient for grouping files without processing overhead, .CBT files often create friction for users because they are less widely supported by modern e-readers and comic apps than CBZ or PDF. Users frequently discover that their default image viewer cannot open the archive, or their mobile reader app fails to recognize the TAR structure. Additionally, because TAR does not compress data, .CBT files can be unnecessarily large compared to other formats. To fix compatibility issues or reduce file size, it is highly recommended to convert .CBT to PDF for universal viewing on any device, or to CBZ for better support in specialized comic software like CDisplayEx or Calibre.
Convert.Guru analyzes your CBT file, detects the exact format, and lets you read the text inside.
Users also converted CTB, CBTQ, CBR, PPSX, RESPONSE SHEET, PDF, CBZ, TXT, STL, EXE, JPG and CB7 files.
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 CBT converter.