Convert TCR to PDB Online — Free
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Upload your .tcr file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .pdb file when it's ready.
What is TCR?
TCR is a text compression format originally developed for Psion handheld PDAs in the 1990s. It uses a simple dictionary-based compression scheme to store plain text content in extremely compact files, making it popular for distributing eBooks on early mobile devices with limited storage.
Format Details
- Full Name
- Psion eBook
- Extension
- .tcr
Key Features
- Psion PDA native
- Text compression
- Extremely compact
- Legacy format
What is PDB?
PDB is the Palm OS database format used for eBooks on Palm Pilot and compatible PDAs. It was one of the earliest digital reading platforms, supporting eReader and Plucker content. Legacy format with large existing library.
Format Details
- Full Name
- Palm Database eBook
- Extension
- .pdb
Key Features
- Palm OS
- eReader format
- Legacy eBook
- Plucker support
TCR vs PDB
| Feature | TCR | PDB |
|---|---|---|
| Full Name | Psion eBook | Palm Database eBook |
| Extension | .tcr | .pdb |
| Best For | Psion PDA native | Palm OS |