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Convert PDF to LRF
Online & free tool to convert PDF files to LRF

1) Input file

Choose source file(s) to convert:

0 of 5 files added (up to 1000 MB combined)

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) File URL

Choose file URL to convert:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.

1) Cloud Service

Choose a cloud service provider:

2) Output format

Select a target format to convert to:

3) Convert

By clicking you agree to our terms

Fine-tune conversion output with format-specific controls.

No advanced controls available for this format.
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PDF

Portable Document Format File

The .pdf file format extension was developed by Adobe systems in 1993 as a means of presenting documents in a consistent manner across different platforms, hardware, operating systems, and applications. The format was not released as an open source document format until 2008, though minimal proprietary technologies still controlled by Adobe Systems exist in the format. Every .pdf document carries with it the necessary meta information required to properly reconstruct the text, fonts, and graphics used to produce the document. This ensures that documents will be viewed in exactly the same way the author intended regardless of the device used to open the document. From conception to date, Adobe Systems has continued to support the format adding features with every iteration of the standard including hardened algorithms for document encryption and privacy. Today, many freely available readers exist allowing you to open and view .pdf documents and create or convert other file formats such as .jpeg and .doc into .pdf documents.
LRF

Linker Response File

The LRF format is a proprietary format developed by Sony in collaboration with Canon, as a document and text encoding standard for the Broad Band eBook file format. The format specifically targeted Sony portable eBook readers and was capable of encoding both text, pagination, and images. Being unencrypted, LRF encoded files do not enforce DRM. This is in contrast to the LRX format which is also part of the BBeB eBook file format which does support encryption for DRM files. The Sony eBook store announced in July 2010 a discontinuation of support for the LRF format in favor of the public and open EPUB format.

Trusted conversion quality

FreeFileConvert uses tuned encoding for PDF to LRF conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.

Seamless workflow

Upload PDF files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized LRF results on any device you rely on.

Batch support for teams

Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent LRF audio with dependable progress tracking.

About PDF

How to open PDF files

Adobe Reader (only view .pdf documents)
Adobe Acrobat Professional (view, create, and convert to .pdf)
Foxit Reader 7

Technical details

The .pdf file format version 1.7 was standardized in 2008 in ISO 32000-1 and is currently recognized as an open format. The most recent release is 1.7 Adobe extension level 8 supporting Adobe's proprietary XML Forms Architecture 3.3 which introduced bulleted l…

The .pdf file format version 1.7 was standardized in 2008 in ISO 32000-1 and is currently recognized as an open format. The most recent release is 1.7 Adobe extension level 8 supporting Adobe's proprietary XML Forms Architecture 3.3 which introduced bulleted lists, XML Encryption, and Flash integration among other features.

About LRF

How to open LRF files

Calibre
Sony reader for PC
BBeB Binder

Technical details

The LRF format is an XML derivative. It represents the compiled and compressed binary format of the BBeB file. The structure of an .lrf file included a header, an object stream, and an object index. Though the LRF format is a proprietary asset, many freely ava…

The LRF format is an XML derivative. It represents the compiled and compressed binary format of the BBeB file. The structure of an .lrf file included a header, an object stream, and an object index. Though the LRF format is a proprietary asset, many freely available programs are able to convert and or open LRF files for viewing.

How to convert PDF to LRF

STEP 1

Upload your document file in the PDF format from your device, Dropbox, or Google Drive.

STEP 2

Select LRF as the output format and click Convert. Adjust optional settings if needed.

STEP 3

Download the converted ebook file. Each file stays available for up to 5 downloads.

More PDF and LRF options

Convert other files to LRF

Explore popular source formats that convert beautifully into LRF.

Convert PDF to other formats

Need a different output? These conversions transform PDF into other widely used formats.

Your data, our priority

  • 256-bit SSL encrypted uploads and downloads
  • Automatic file deletion shortly after conversion completes
  • Reliable global infrastructure for consistent performance