TCR, Psion Series 3 eBook File (.tcr)

The TCR eBook file format

Files with the TCR extension are a by now deprecated e-book file format. Originally, the format has been developed by Psion Teklogix for their Psion Series 3 devices. The Psion Series 3 devices and the proprietary TCR format have been developed in the 1990s, but have since been abandoned in favor of more popular and more widely supported e-book formats. However, there are still some mobile and desktop readers that are able to handle, open and display TCR files.

Technical details of TCR files

TCR files, like any e-book files, can contain the text of the e-book, but only very basic and limited formatting. The TCR format provided, at the time of release, a better compression ratio than it's immediate competitors.

More information about the TCR file format

File extension	.tcr
File category	eBook
Example file	Download example.tcr file (2.29 KiB)
Associated programs	Calibre (Windows, Mac 6 Linux)
Useful links	Further information about the TCR format
File conversion	Convert a file to TCR
Developer	Psion Teklogix