EXP to TCR Converter

Export EXP embroidery patterns to Psion TCR eBook format

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Psion eBook Format

Transform EXP embroidery files into TCR eBooks for Psion-compatible readers. Legacy format support from Convertio.

No Setup Required

Access the converter from any web browser without downloading or installing anything on your device.

Secure Processing

Uploaded EXP files are deleted after conversion. TCR outputs are purged from servers within 24 hours automatically.

How to convert EXP 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

EXP (Melco) is a machine embroidery file format developed by Melco, a company founded in 1972 that pioneered the commercial embroidery industry. The format stores stitch data as a series of relative coordinate movements using a compact binary structure, with each record encoding the needle's horizontal and vertical displacement along with control flags for stitch type, color changes, and machine stops. EXP files use a straightforward sequential layout — stitch records follow one after another without complex headers or nested structures, making the format reliable and fast to process on embroidery machine controllers. Melco developed the format for their commercial multi-head embroidery machines, widely deployed in contract embroidery shops, uniform manufacturers, and promotional product companies. One advantage is efficiency for commercial production — the lean binary structure minimizes file size and loading time, important when operators run hundreds of designs daily on multi-head machines. The format's association with Melco's professional-grade equipment gives it credibility in the commercial embroidery sector, where reliability and speed are prioritized. Most professional digitizing software — including Wilcom, Pulse, and Hatch — supports EXP export, ensuring designs from any major platform can target Melco equipment. While EXP lacks embedded thread color metadata, its simplicity and industry acceptance have sustained its use across decades of commercial embroidery production.
Initial release: 1985
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 EXP to TCR?

TCR is a compressed eBook format for Psion devices. Converting EXP to TCR packages your embroidery design for this legacy reading platform.

What reads TCR files?

TCR files open in Psion e-reader applications and Calibre. Some mobile reading apps also support the TCR format.

Is TCR still relevant today?

TCR is a legacy format with limited current use. For modern eBook distribution, EPUB or AZW3 are preferred options.

How fast is the conversion?

Cloud servers process EXP to TCR in seconds. No special software or device needed — just a web browser.

Is this free?

Convertio offers free EXP to TCR conversion. Premium plans expand limits for professional needs.