POTM to LRF Converter

Convert POTM to LRF for Sony Reader — free online

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Sony Reader Compatible

Produce LRF files directly from your POTM templates — ready to load onto Sony Reader devices for comfortable e-reading.

Cloud-Based Conversion

Processing takes place on Convertio servers. Upload from any device without installing e-book creation software.

Fast Turnaround

Even multi-slide POTM templates convert to LRF in seconds. Cloud servers handle the processing while your device stays free.

How to convert POTM 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

POTM (PowerPoint Template with Macros) is a macro-enabled template format for Microsoft PowerPoint, introduced with Office 2007 as part of the Office Open XML family. POTM combines the template functionality of POTX — providing reusable slide masters, layouts, themes, and design foundations — with the ability to embed VBA (Visual Basic for Applications) macro code that executes in presentations created from the template. The format is a ZIP archive containing the standard XML parts for slide masters, layouts, and themes, plus a vbaProject.bin stream housing the VBA project. This combination enables organizations to distribute not just visual consistency but also functional automation: every presentation created from a POTM template inherits both the design system and the programmatic capabilities built into it. Common use cases include templates that automatically populate slides with data from corporate systems, enforce content approval workflows, insert standardized disclaimer slides, or provide custom ribbon tabs with organization-specific tools. One advantage is embedded workflow automation — a POTM template can include initialization macros that configure the presentation environment, add custom menu options, and connect to external data sources the moment a new presentation is created from it. The distinct .potm extension serves a security purpose as well, enabling administrators to apply differentiated trust policies for macro-containing templates versus standard POTX files. POTM is supported exclusively in Microsoft PowerPoint desktop editions where VBA execution is available.
Developer: Microsoft
Initial release: January 30, 2007
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 POTM to LRF?

LRF is the format designed for Sony Reader devices — converting lets you view presentation content on these dedicated e-readers.

What devices read LRF files?

Sony Reader devices support LRF natively. On computers, Calibre can open and manage LRF e-books.

Does LRF support images?

LRF supports embedded images and text formatting. Visual elements from your POTM slides are included in the output.

Is LRF still relevant?

While Sony has discontinued its Reader line, many owners still use the devices. Calibre keeps LRF accessible on modern computers as well.

Is this conversion free?

Yes, Convertio provides free POTM to LRF conversion. Premium plans offer enhanced processing and larger file limits.

Can I convert LRF to other formats?

Convertio supports converting LRF to EPUB, MOBI, PDF, and more — so you can migrate content to other e-book ecosystems easily.