EPUB to LRF
Converter
Convert EPUB to LRF online for free. Upload your EPUB file and download the LRF in seconds — private, browser-based, no signup, nothing to install.
Opens in the ReadLoudly reader. Free, no signup.
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Your file is ready for conversion
Review the settings below and click Convert to continue.
Congratulation
Successfully converted EPUB to LRF.
File will be automatically deleted after 8 hours
How To Convert?
Convert your files quickly and securely.
Upload Your File
Choose the EPUB file you want to convert, or drag it onto the page.
Adjust the Settings
Set your options, then click Convert EPUB to start.
Download the Result
Click Download LRF to get your new file.
About EPUB to LRF Conversion
What is the EPUB format?
EPUB stands for Electronic Publication — the open ebook standard maintained by the W3C. It is used by readers of Kobo, Apple Books, Google Play Books and most non-Kindle devices. Its strengths are text that reflows to any screen size, adjustable fonts, chapters and metadata; its drawback is that Kindle devices and many office tools cannot open it directly.
What is the LRF format?
LRF stands for Sony Portable Reader File (BroadBand eBook) — Sony's proprietary format for the PRS-500 and PRS-505 readers, dropped in 2009. It is used by owners of first-generation Sony Readers with libraries bought from the Sony Connect store. Its strengths are good rendering on the Sony hardware it was designed for; its drawback is that orphaned since Sony moved to EPUB, so nothing modern opens it without conversion.
What changes when you convert EPUB to LRF
EPUB and LRF are both reflowable ebook formats, so the conversion keeps chapters, the table of contents, cover art, metadata and inline images; what changes is which devices can open the file. Styling that LRF does not support is simplified rather than dropped, and DRM-protected EPUB files cannot be converted at all.
Leaving EPUB behind means leaving behind its main drawback: Kindle devices and many office tools cannot open it directly. What you get in return is what LRF does best — good rendering on the Sony hardware it was designed for — which is why owners of first-generation Sony Readers with libraries bought from the Sony Connect store rely on it. Tip: open the LRF in your reader app straight after converting to confirm the chapter list — if headings were missing in the EPUB, the table of contents will be too.
The conversion itself runs with Calibre and ImageMagick on encrypted servers. Files are deleted automatically once the LRF has been generated — nothing is stored or read — and no account is needed.
Why convert EPUB to LRF?
- Read the book on a device or app that does not support EPUB
- Keep bookmarks, progress and highlights in your usual ebook reader
- Fix a library where the same book exists in several formats
- Listen to it: open the LRF in the ReadLoudly reader and have it read aloud
EPUB to LRF — Frequently Asked Questions
Everything worth knowing before you convert a EPUB file to LRF.
Upload your EPUB above, adjust any EPUB-to-LRF options you need, and press Convert. The finished LRF is ready to download as soon as processing completes — no software to install and no account required.
Yes. EPUB to LRF conversion is free with no signup, and there is no watermark on the output. Signing in raises the file size limit and puts your jobs into the priority processing queue.
Guests can convert an EPUB of up to 50 MB into LRF. Signed-in users get higher ceilings — 200 MB on Core, 350 MB on Plus and 500 MB on Pro — which matters most when the source EPUB is image-heavy or book-length.
Your EPUB upload is encrypted in transit, converted, and then deleted automatically along with the LRF output. ReadLoudly does not read, retain long-term, train on, or share the contents of a EPUB file you convert here.
Most EPUB files finish in under 30 seconds. A large, image-heavy or multi-hundred-page EPUB can take a minute or two before the LRF is ready — the page updates on its own, so there is no need to refresh or resubmit.
Yes. Open the converted LRF in ReadLoudly's LRF reader and it can be narrated with 1200+ AI voices across 40+ languages. Going EPUB to LRF first is often the whole point — it puts the content into a format the reader handles natively.
No. ReadLoudly runs the EPUB to LRF conversion on its own servers with the same industry-standard tooling (Calibre and ImageMagick) you would otherwise install yourself, so it behaves identically on Windows, macOS, Linux, iOS and Android straight from the browser.
More on reading and listening to your documents
Guides and comparisons from the ReadLoudly blog on getting more out of listening to your documents.
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Best Quality
Converted files maintain excellent quality and fidelity using industry-standard tools like Calibre and ImageMagick.
High fidelity
Free & Secure
This tool is free and works on any web browser. Files are protected with 256-bit SSL encryption and deleted automatically after a few hours.
Private & safe
Works Anywhere
Our converter runs in the browser so it works on Windows, Mac, Linux and mobile — no installation required.
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