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PEF to FB2 Converter

Free PEF to FB2 conversion — images to eBook format

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Data Protection

Security is built into every conversion. Uploaded PEF images are deleted instantly after processing, and FB2 results are cleaned up within 24 hours.

Effortless Process

No technical knowledge required. The converter guides you through PEF to FB2 conversion in a few clicks — upload, select format, download.

Quick Conversion

No long waits. The converter processes PEF images quickly, delivering FB2 results in seconds — even during peak usage periods.

How to convert PEF to FB2

1

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

2

Choose fb2 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your fb2 file right afterwards

About formats

PEF (Pentax Electronic Format) is the proprietary RAW image format used by Pentax digital SLR and mirrorless cameras, introduced in 2003 with the *ist D — Pentax's first digital SLR — and continuing through the current K-mount and medium-format 645 lineup. PEF files capture the unprocessed 12-bit or 14-bit readout from the camera's CMOS sensor in its native Bayer mosaic pattern, stored in a TIFF-based container with Huffman-coded lossless compression. The format includes embedded JPEG previews at multiple sizes, comprehensive EXIF metadata, and Pentax-specific MakerNote tags that record Custom Image mode settings, Shake Reduction (SR) gyroscope data, lens identification from the K-mount electronic interface, and the camera's Auto Level correction parameters. Pentax cameras are notable for their weather-sealed construction and compatibility with the vast legacy of K-mount lenses dating back to 1975, and PEF files from these bodies can include manual lens metadata entered through the camera's menu system. One advantage is the preservation of Pentax's distinctive color rendering — the brand's Custom Image modes (Bright, Natural, Reversal Film, Bleach Bypass, etc.) are stored as metadata rather than applied to the raw data, allowing photographers to explore different rendering interpretations during post-processing while the original sensor capture remains untouched. The format's longevity is another strength: PEF files from every Pentax DSLR are supported by Adobe Lightroom, Capture One, dcraw, RawTherapee, Pentax's own Digital Camera Utility, and other modern RAW processors.
Developer: Pentax
Initial release: 2003
FB2 (FictionBook) is an XML-based ebook format created by Dmitry Gribov in 2004, designed to provide a clean semantic description of a book's content independent of its visual presentation. Unlike page-layout formats, FB2 encodes structure — title, authors, chapters, annotations, genres, epigraphs, poems, footnotes, and binary attachments (typically cover images) — within a single well-formed XML document. This structural approach means reading applications have full control over rendering, allowing the same file to adapt perfectly to a small phone screen or a large e-ink reader. FB2 became enormously popular in Russia and Eastern Europe, serving as the dominant format on major Russian digital libraries and ebook distribution platforms. One significant advantage is metadata richness: the format's schema mandates detailed bibliographic information including author, translator, series position, publication date, and genre classification, making library management and discovery straightforward. The plain-text XML foundation is another strength — FB2 files are human-readable, easy to validate, and simple to transform using standard XML tools like XSLT. The format specification is freely available on GitHub, and a wide ecosystem of readers, editors, and converters supports it across all major platforms, from desktop applications like Calibre to dedicated e-readers with native FB2 rendering.
Developer: Dmitry Gribov
Initial release: 2004

Frequently Asked Questions

Why should I convert PEF to FB2?

FB2 eBook format allows you to compile PEF images into a digital publication — ideal for photography portfolios or visual catalogs on e-reading devices.

What applications work with FB2?

Open FB2 files using FBReader, Calibre, CoolReader, Moon+ Reader, and KOReader.

Is my PEF file safe during conversion?

Your files are handled securely. The PEF upload is erased right after processing, and the resulting FB2 is purged from servers within 24 hours.

Does converting PEF to FB2 affect quality?

Your PEF image data is processed carefully during conversion. The resulting FB2 retains the maximum quality the target format can support.

Is PEF to FB2 conversion free?

Converting PEF to FB2 is free at Convertio. For heavier workloads or extra features, paid plans provide additional capacity.

Does the converter work on all devices?

Yes — the PEF to FB2 converter runs entirely in your browser. It works on Windows, macOS, Linux, tablets, and smartphones with no software installs.