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LRF Converter

Convert files to and from LRF online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.

  • Free to use
  • No file stored beyond 1 hour
  • Encrypted over TLS 1.2/1.3
  • No watermarks

Drag and drop your files here or click to upload.

Maximum file size is 1GB

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

  1. 01

    Upload your file

    Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

  2. 02

    Choose an output format

    Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

  3. 03

    Convert & download

    Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an LRF file?

Sony Portable Reader Format

Developed By
Sony
Initial Release
2006
MIME Type
application/x-sony-bbeb

The LRF (Broad Band eBook) format is a deprecated proprietary eBook format developed by Sony for its PRS-500 and PRS-505 e-reader series. It is a binary format that utilizes a specific XML-based markup internally for layout rendering, supporting hard-coded pagination, vector images, and zlib compression. Unlike reflowable formats, LRF defines static page layouts, which can lead to scaling issues on displays with resolutions differing from the original Sony hardware specifications.

How to open an LRF file

Sony has abandoned LRF in favor of the EPUB standard, meaning modern devices do not support it natively. The most reliable method for opening LRF files on desktop systems is using Calibre or the Summoner application. For viewing on modern e-readers or tablets, conversion to EPUB or PDF via Calibre is the standard technical workflow.

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

  • 3,000+ conversions supported

    Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.

  • Fast, cloud-powered

    No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

  • Secure & private

    Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

  • Free - no account needed

    Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Guides

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