ODT to TCR Converter

Free online ODT to TCR conversion — Psion eBook format

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Psion Compatible

Your ODT content becomes a compact TCR file — ready for Psion devices and compatible reading software.

Cloud Processing

No desktop software needed. Conversion runs on Convertio servers entirely within your browser.

Multi-File Support

Upload a batch of ODT documents and convert them all to TCR at once — efficient for large collections.

How to convert ODT to TCR

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose tcr or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your tcr file right afterwards

About formats

ODT (OpenDocument Text) is the word processing format defined by the OpenDocument Format (ODF) standard, developed by the OASIS technical committee and first published as ODF 1.0 on May 1, 2005, later adopted as international standard ISO/IEC 26300. An ODT file is a ZIP archive containing XML documents that describe text content, formatting styles, metadata, and settings using a vendor-neutral, royalty-free specification. The document body resides in content.xml with styling rules in styles.xml, while embedded images, fonts, and other resources are stored alongside in the package. The format supports rich word processing features including paragraph and character styles, tables, footnotes, tracked changes, table of contents generation, bibliography management, mail merge fields, and embedded vector and raster graphics. ODT serves as the native format for LibreOffice Writer, Apache OpenOffice Writer, and Calligra Words, and can be imported by Microsoft Word, Google Docs, and other commercial tools. One advantage is vendor independence — ODT is governed by an open standard rather than a single company, ensuring long-term document accessibility free from proprietary lock-in. This makes ODT particularly important for government agencies, educational institutions, and organizations with archival mandates. The XML-based architecture provides another strength, enabling programmatic document generation and processing using standard tools in any programming language.
Developer: OASIS
Initial release: May 1, 2005
TCR (Text Compression for Reader) is a compressed plain-text ebook format developed by Barry Childress in the early 1990s for the Psion Series 3 family of palmtop computers. The format was created for Childress's Reader3 application, a text file viewer that needed to fit large books into the Psion's extremely limited storage — typically 128 KB to 2 MB of available memory. TCR uses a dictionary-based compression scheme derived from the earlier ZVR format by Ian Giddings, replacing repeated byte sequences with single-byte tokens that reference a header dictionary. This straightforward approach achieves compression ratios of roughly 40-60% on typical English prose while requiring minimal CPU resources for decompression. The Psion Series 3 ran on a 3.84 MHz NEC V30 processor with no floating-point unit, so TCR's low computational overhead was essential for smooth page-by-page reading. A key advantage is remarkable storage efficiency for its simplicity — users could carry dozens of novels on removable SSD cards that held only a few hundred kilobytes. The format found a dedicated user community among Psion enthusiasts who built libraries of compressed literature for portable reading years before smartphones existed. Though the Psion platform faded from the market in the early 2000s, TCR files can still be opened and converted by modern ebook tools, and the format stands as an early example of purpose-built mobile reading technology from the pre-smartphone era.
Developer: Barry Childress
Initial release: 1993

Frequently Asked Questions

Why convert ODT to TCR?

TCR is a compressed text format for Psion devices — useful for reading documents on those legacy handhelds.

What is TCR format?

TCR (Text Compression for Reader) is a simple compressed eBook format used primarily on Psion organizers.

What opens TCR files?

Psion devices read TCR natively. Calibre and some mobile reading apps can also handle the format.

Is this conversion free?

Yes — Convertio converts ODT to TCR at no charge. Premium plans support larger or more frequent conversions.

Is my document kept private?

Absolutely. Uploaded ODT files are deleted immediately and TCR outputs are purged within 24 hours.

Can I convert several files at once?

Yes — batch upload is available. Convert multiple ODT documents to TCR in one session.

ODT to TCR Quality Rating

3.8 (2 votes)
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