LRF to ICO Converter

Free LRF to ICO conversion — Windows icon format

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Ebook to Icon

Transform a visual from your old LRF ebook into a crisp ICO icon — usable as a desktop shortcut, favicon, or thumbnail.

Fast Processing

The LRF to ICO conversion completes in seconds. Cloud servers handle the workload so your device stays responsive.

Private Processing

Your LRF upload is deleted immediately after conversion. ICO output files are removed from servers within 24 hours.

How to convert LRF to ICO

1

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

2

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

3

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

About formats

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
ICO is the icon file format for Microsoft Windows), introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.
Developer: Microsoft
Initial release: 1985

Frequently Asked Questions

Why convert LRF to ICO?

ICO creates small icon images from ebook pages — useful for custom desktop icons, favicons, or thumbnails of LRF content.

Which apps can open ICO files?

Windows displays ICO natively. GIMP, IrfanView, Greenfish Icon Editor, and most image editors also support the format.

What sizes does ICO support?

ICO can hold multiple sizes in one file — commonly 16x16, 32x32, 48x48, and 256x256 pixels for different display needs.

Can I use ICO as a website favicon?

Yes, ICO is the classic favicon format. Convert an LRF page to ICO and use it as a website icon in any browser.

Is LRF to ICO conversion free?

Yes, Convertio offers free LRF to ICO conversion. Premium plans unlock higher limits and priority processing.