CMX to LRF Converter

CMX to LRF online — Sony Reader eBook format free

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Sony Reader Support

CMX to LRF creates content for Sony e-readers. Your Corel designs become viewable on Sony Reader hardware.

No Software Needed

Convert CMX to LRF entirely in your web browser. No eBook authoring tools or Corel software required.

Secure Processing

Your CMX file is deleted after conversion. LRF output is removed within 24 hours — privacy guaranteed.

How to convert CMX to LRF

1

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

2

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

3

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

About formats

CMX (Corel Presentation Exchange) is a vector graphics exchange format developed by Corel Corporation, introduced with CorelDRAW 5 in September 1994. Designed as a cross-application interchange format within the Corel product suite, CMX stores vector objects, text, bitmaps, and rendering attributes in a structure accessible to CorelDRAW, Corel PHOTO-PAINT, Corel Presentations, and other Corel applications without requiring each program to understand the full CDR native format. The format uses a chunk-based architecture that encodes geometric primitives, fill patterns, outline properties, and color definitions in a standardized way, supporting both 16-bit and 32-bit variants. CMX gained significance beyond the Corel ecosystem through its adoption by third-party applications and its role in clipart distribution — many vector art collections from the mid-to-late 1990s shipped in CMX format. One advantage is interoperability within design workflows: CMX provided a practical bridge for moving vector content between different Corel applications while preserving visual fidelity, gradients, and transparency attributes. The format's inclusion of both vector and bitmap data within a single file is another strength, allowing complex mixed-media illustrations to be exchanged as self-contained units. Microsoft also added CMX import support to some Office applications, expanding the format's reach. While modern Corel applications primarily use CDR for native work and export to SVG, PDF, or EPS for interchange, CMX files from the CorelDRAW era remain widely encountered in legacy asset libraries.
Developer: Corel Corporation
Initial release: 1994
LRF is the file format associated with Sony's BBeB (Broadband eBook) specification, jointly developed by Sony and Canon and introduced in 2004 with the Sony Librie EBR-1000EP — the world's first commercial E Ink e-reader. The format supports both reflowable text and fixed-layout page rendering, embedding fonts, images, vector graphics, and metadata within a compact binary container. LRF files use a block-based internal structure with object trees describing page layouts, text streams, image resources, and table of contents navigation. Sony's Reader devices and the companion desktop software (Sony Reader Library) served as the primary ecosystem for LRF content throughout the mid-2000s. A key advantage was its early adoption of high-quality font embedding and text rendering optimized specifically for E Ink displays, delivering a reading experience noticeably superior to many competing formats of the era. The format also supported bookmark synchronization, dictionary lookups, and annotations within the Sony Reader ecosystem. However, Sony officially discontinued BBeB/LRF support in 2010, migrating its Reader platform to the industry-standard EPUB format. Today LRF files are primarily encountered in personal ebook collections from that period and can be converted to modern formats using tools like Calibre. The format remains a historically significant milestone as the native format of the device category that launched the modern e-reader revolution.
Developer: Sony
Initial release: 2004

Frequently Asked Questions

Why convert CMX to LRF?

LRF is the legacy Sony Reader eBook format. Converting CMX to LRF makes your Corel designs viewable on older Sony e-reader devices.

What reads LRF files?

Sony Reader devices and Calibre can open LRF files. Some third-party eBook apps also support the format.

Is LRF still used?

LRF is a legacy format. Sony now supports EPUB, but LRF remains relevant for owners of older Sony Reader hardware.

Is this converter free?

Basic CMX to LRF conversion is free on Convertio. Premium plans add capacity for larger workflows.

How fast is conversion?

LRF files are compact. Conversion from CMX finishes in seconds on Convertio servers.