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IIQ to EPUB Converter

Turn IIQ into EPUB online — instant conversion

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Platform Independent

Convert Phase One IIQ files on any device — Windows, macOS, Linux, or mobile. No professional software suite required.

Medium Format Fidelity

IIQ files capture extraordinary detail from Phase One sensors. The converter preserves this professional-grade quality in the output.

Confidential Processing

Your professional IIQ files are removed right after conversion. Output files are purged within 24 hours — client work stays private.

How to convert IIQ to EPUB

1

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

2

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

3

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

About formats

IIQ (Intelligent Image Quality) is the proprietary RAW format developed by Phase One, a Danish manufacturer of medium-format digital camera systems and backs, introduced in 2008 with the P65+ digital back. IIQ files capture the unprocessed readout from Phase One's large-area CCD and CMOS sensors — ranging from 40 to 151 megapixels in current systems — at 16 bits per channel, preserving the full dynamic range, color depth, and spatial resolution of the sensor. The format comes in two variants: IIQ Large (IIQ L), which uses lossless compression for zero-quality-loss archival, and IIQ Small (IIQ S), which applies visually lossless compression to reduce file sizes by approximately 40-60% with negligible quality impact. Phase One's sensor calibration data, including per-pixel defect maps, fixed-pattern noise profiles, and factory color calibration, is embedded in the IIQ file, enabling precise correction during RAW development. One advantage is sheer resolving power and tonal depth: IIQ files from Phase One's flagship systems deliver the highest pixel counts and widest dynamic range available in commercial photography, making them the standard format for museum digitization, fine art reproduction, aerial surveying, and commercial advertising where maximum detail is non-negotiable. Tight integration with Capture One is another key strength — Phase One develops both the camera hardware and the RAW processing software, ensuring that IIQ files receive optimized demosaicing, color rendering, and lens correction tuned to each specific camera-lens combination.
Developer: Phase One
Initial release: 2008
EPUB (Electronic Publication) is an open ebook standard originally developed by the International Digital Publishing Forum (IDPF) and now maintained by the W3C following the organizations' merger in 2017. The first version carrying the EPUB name was approved in October 2007 as a successor to the Open eBook Publication Structure (OEBPS). An EPUB file is essentially a ZIP archive containing XHTML or HTML5 content documents, CSS stylesheets, images, fonts, and metadata organized according to the Open Packaging Format and Open Container Format specifications. The current major version, EPUB 3, supports reflowable and fixed-layout content, embedded multimedia, JavaScript interactivity, MathML equations, and rich accessibility features including semantic markup and media overlays for synchronized text and audio. A defining advantage is universal device support — unlike proprietary formats, EPUB works natively on virtually every non-Kindle e-reader, tablet, and reading application, from Apple Books and Google Play Books to Kobo and dozens of third-party apps. The reflowable text model is another core strength, automatically adapting pagination, font size, and margins to match any screen dimension and user preference. EPUB's open specification and active W3C stewardship ensure long-term preservation and vendor independence, making it the de facto standard for digital publishing across libraries, academic institutions, and commercial retailers worldwide.
Initial release: October 2007

Frequently Asked Questions

Why convert IIQ to EPUB?

IIQ files are used in high-end commercial photography. Converting to EPUB creates deliverables your clients can open without Phase One Capture One software.

What opens EPUB?

Apple Books, Google Play Books, Kobo, Calibre, and most non-Kindle e-readers open EPUB files.

Can I combine multiple IIQ images into one EPUB?

Each IIQ converts to a separate EPUB. For multi-image ebooks, you would need to combine the results in ebook editing software.

Can I convert IIQ to EPUB on my phone?

Absolutely. The converter works in any mobile browser — iOS Safari, Android Chrome, or any other. No app installation necessary.

Does converting IIQ to EPUB cost anything?

Not for standard use — basic conversions are free. Premium tiers provide faster speeds and additional features for power users.