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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 .prc 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 PRC?
PRC is an eBook format originating from Palm OS devices and later adopted by Mobipocket. It was the standard format for early Kindle devices before Amazon transitioned to AZW and KF8.
Format Details
- Full Name
- Palm Resource Compiler / Mobipocket
- Extension
- .prc
Key Features
- Palm OS compatible
- Early Kindle support
- Mobipocket based
- Legacy eBook
TCR vs PRC
| Feature | TCR | PRC |
|---|---|---|
| Full Name | Psion eBook | Palm Resource Compiler / Mobipocket |
| Extension | .tcr | .prc |
| Best For | Psion PDA native | Palm OS compatible |