PPTX to TCR Converter

Convert PPTX to TCR e-book format — free online

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Slides to Compressed Text

Extract text from PPTX presentations and pack it into TCR compressed e-book format — efficient storage for reading on Psion and compatible devices.

Ultra-Compact Output

TCR compression shrinks text content to a fraction of its original size. Your presentation notes become lightweight, portable reading material.

Server-Side Conversion

Convertio handles the processing on its servers — no Psion tools or e-book software needed on your device. Upload, convert, and download.

How to convert PPTX 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

PPTX is the default file format for Microsoft PowerPoint presentations since Office 2007, based on the Office Open XML (OOXML) standard published as ECMA-376 and later adopted as ISO/IEC 29500. A PPTX file is a ZIP archive containing XML documents that describe slide content, layouts, themes, relationships, and metadata in a structured, human-inspectable hierarchy. Each slide, slide layout, and slide master is stored as a separate XML part, with media assets (images, audio, video) and embedded objects kept in dedicated directories within the package. The XML foundation enables programmatic creation and manipulation of presentations using standard XML tools and libraries — developers can generate, modify, or extract content from PPTX files without requiring PowerPoint itself. One significant advantage is openness and interoperability: the fully documented OOXML specification allows any software to read and write PPTX files, and the format is supported by LibreOffice Impress, Google Slides, Apple Keynote, and numerous other tools. Built-in ZIP compression is another practical strength — PPTX files are typically 50-75% smaller than equivalent PPT files, reducing storage and transfer costs. The format supports all modern PowerPoint features including SmartArt, 3D models, morph transitions, embedded fonts, accessibility metadata, and co-authoring capabilities. PPTX has become the standard interchange format for presentation content worldwide.
Developer: Microsoft
Initial release: January 30, 2007
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 PPTX to TCR?

TCR compresses text into an extremely small format — useful for moving lecture notes or slide content onto Psion handhelds and legacy e-reading devices.

How do I open TCR files?

Calibre reads and converts TCR files on desktop. Psion Series 5 and similar PDAs with built-in reader software handle TCR natively.

Does TCR keep images from PPTX?

TCR is a text-only format with built-in compression. Images, charts, and graphical elements from your slides are not included in the output.

How effective is TCR compression?

TCR typically achieves strong compression on text data, producing files significantly smaller than plain text — well suited for devices with limited storage.

Is PPTX to TCR free on Convertio?

Yes, this conversion is completely free. Paid plans provide additional benefits like batch processing and larger upload allowances.

Can I convert TCR to other formats later?

Calibre can transform TCR into EPUB, MOBI, PDF, and many other e-book formats, so you are not locked into the TCR ecosystem after converting.

PPTX to TCR Quality Rating

4.4 (17 votes)
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