BMP to TCR Converter

Seamless BMP to TCR conversion online — always free

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Modern Format

BMP is outdated for most purposes — converting to TCR gives you a practical format with better compression and wider modern support.

Works Everywhere

Convert BMP to TCR from any device — Windows, Mac, Linux, iOS, or Android. All you need is a browser and internet connection.

Dead Simple

Three clicks from BMP to TCR. Upload, convert, download — the streamlined workflow needs no manual reading or technical know-how.

How to convert BMP 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

BMP (Bitmap) is a raster image file format developed by Microsoft for the Windows operating system, introduced with Windows 3.0 in 1990. The format stores pixel data in a straightforward structure: a file header specifying dimensions, color depth, and compression method, followed by an optional color palette and then the raw pixel array. BMP supports color depths from 1-bit monochrome through 4-bit and 8-bit indexed color to 16-bit, 24-bit true color, and 32-bit with alpha channel. Most BMP files store pixels uncompressed (BI_RGB), though optional RLE compression is available for 4-bit and 8-bit modes. Pixels are arranged in bottom-up row order by default, with each row padded to a 4-byte boundary. One advantage is absolute simplicity — the format has no complex encoding, filtering, or compression layers, making BMP files trivial to read and write programmatically in any language. This simplicity also means BMP images render with zero decoding overhead, useful in scenarios where decompression latency matters. The format's deep Windows integration is another strength: BMP is the native bitmap format for Windows GDI, clipboard operations, and device-independent bitmap (DIB) handling, ensuring first-class support across the entire Windows ecosystem. While BMP's lack of compression produces large files unsuitable for web use or storage-constrained environments, it remains widely used as an intermediate format in image processing, as a clipboard exchange format, and in embedded systems where decoding simplicity outweighs file size.
Developer: Microsoft
Initial release: 1990
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 BMP to TCR?

TCR compresses your content for Psion devices — converting your image data to a lightweight format for legacy handheld eBook readers.

What programs open TCR files?

Calibre, Psion devices, CoolReader. Most modern operating systems also have built-in support or free viewer options available.

What happens to my uploaded files?

Your BMP files are automatically deleted right after conversion. The resulting TCR files remain available for download for 24 hours, then they are permanently removed.

How long does BMP to TCR conversion take?

Most conversions complete within seconds. Processing time depends on file size and server load, but the entire workflow typically finishes in under a minute.

Can I convert BMP to TCR for free?

Yes — Convertio offers free BMP to TCR conversion. For professional volumes and larger files, premium plans provide expanded limits and priority processing.

Does BMP to TCR lose quality?

Lossless formats like PNG preserve every pixel. Lossy formats like JPG trade minimal visual quality for dramatic size reduction — usually imperceptible.

BMP to TCR Quality Rating

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