TCR to JPS Converter

Convert compressed text to stereo JPS image — free

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Stereoscopic Output

TCR to JPS conversion renders your PalmOS text as a side-by-side stereo image — viewable in 3D on compatible displays and VR headsets.

Server-Side Rendering

All text rendering and JPS encoding runs on Convertio cloud infrastructure, so no software or special hardware is needed locally.

Automatic Deletion

Uploaded TCR files are removed instantly after conversion. JPS output is cleaned from servers within 24 hours for privacy.

How to convert TCR to JPS

1

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

2

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

3

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

About formats

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
JPS (JPEG Stereo) is a stereoscopic 3D image format that stores a left-eye and right-eye view pair within a single JPEG-compressed file, developed by VRex, Inc. around 1997 for use with stereoscopic displays and viewers. A JPS file is technically a standard JPEG file containing a side-by-side stereo pair — the left and right perspective images are placed horizontally adjacent within a single frame, with the full image width being twice the individual view width. The file uses standard JPEG compression and can be opened by any JPEG-compatible viewer (which will show the side-by-side pair as a single wide image), but stereo-aware applications parse the image into its left and right components for proper 3D presentation. JPS files can be viewed with dedicated stereoscopic software, anaglyph viewers (generating red-cyan images for colored glasses), autostereoscopic displays, VR headsets, and hardware like NVIDIA 3D Vision or passive 3D monitors. The format gained renewed interest with the consumer 3D photography boom of the late 2000s and early 2010s, when cameras like the Fujifilm FinePix Real 3D W1/W3 captured stereo pairs natively. One advantage is backward compatibility: because JPS uses standard JPEG encoding, the files work with existing JPEG infrastructure — they can be transmitted, stored, thumbnailed, and even viewed (as flat side-by-side images) without any special software. The format's simplicity is another practical strength — no specialized container or codec is required, and any tool that can crop and display JPEG images can extract individual views. JPS files are supported by StereoPhoto Maker, ImageMagick, and various 3D photo viewers.
Developer: VRex, Inc.
Initial release: 1997

Frequently Asked Questions

Why convert TCR to JPS?

TCR holds only flat compressed text. JPS renders it as a stereo JPEG image pair, enabling 3D viewing on stereoscopic displays or VR viewers.

What opens JPS stereo images?

StereoPhoto Maker, JPS Viewer, NVIDIA 3D Vision Photo Viewer, and IrfanView with the stereo plugin all open JPS stereoscopic files.

How does JPS create a 3D effect?

JPS stores two side-by-side images — one for each eye. Stereoscopic viewers merge them to create a depth perception effect.

Is text meaningful in 3D format?

It creates an unusual visual effect — rendered text appears to float in 3D space. Primarily a novelty or creative presentation choice.

Is TCR to JPS conversion free?

Yes, Convertio provides TCR to JPS conversion at no cost. Premium accounts add batch processing and increased upload sizes.