IIQ to FAX conversion is the process of transforming Pentax RAW image files (.IIQ), which contain unprocessed sensor data and metadata, into the FAX format used for transmitting scanned-like images over fax systems or archiving as fax-style bitmaps. This conversion involves demosaicing and rasterizing the RAW data into a monochrome or bilevel image with appropriate resolution and compression settings compatible with FAX standards.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
WebP has quietly become the default image format of the modern web, delivering 25-35% smaller files than JPG and PNG with universal browser support. This 2026 guide covers current adoption stats, browser compatibility, WordPress integration, conversion workflows, and when to choose WebP over AVIF for optimal Core Web Vitals performance.
Read guide →Not sure whether to save your image as PNG or JPG? This detailed comparison covers compression, transparency, file size, web performance, and real-world use cases so you can pick the right format every time — with conversion links when you need to switch.
Read guide →Learn how to convert HEIC to JPG for maximum compatibility. This guide explains what HEIC is, why iPhones use it, the key differences between HEIC and JPG, and walks through every conversion method including online tools, iPhone settings, Windows, and Mac.
Read guide →Drag your .IIQ file from your computer or use the browse function.
Confirm .fax as the selected destination format.
Click "Convert" and download your converted .FAX file once ready.
IIQ files typically have the MIME type 'image/x-iiq' and are used in digital photography for raw image storage. FAX files usually use the MIME type 'image/fax' and are encoded using compression codecs like Modified Huffman or Modified READ to optimize for transmission. The conversion process involves decoding raw sensor data from IIQ into a format suitable for fax transmission standards.
The FAX (.FAX) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like IIQ.
While specific technical details aren't available here, FAX files generally serve the purpose of storing image effectively within their domain.
Our Online IIQ to FAX Converter provides a simple and efficient solution to convert your IIQ files into FAX format. Designed for users who need fast and reliable conversion, this tool supports hassle-free processing without any downloads or technical expertise.
IIQ is a raw image format primarily used by professional cameras to store uncompressed data, offering high fidelity and flexibility in editing. In contrast, FAX is a format specifically designed for transmitting documents over telephone lines, optimized for monochrome images and lower resolution. While IIQ focuses on image quality, FAX prioritizes compatibility and transmission efficiency.
Keep individual IIQ files under 250MB for fastest processing; large RAW files can slow conversion and increase memory usage.
To preserve detail, demosaic using a high-quality RAW profile and then convert to grayscale before applying bilevel thresholding; avoid aggressive noise reduction prior to conversion.
For batch conversion, process files in groups of 10–50 to balance speed and resource usage; use MMR compression for smaller output sizes if recipients support it.
FAX is inherently bilevel or low-bit grayscale: expect loss of color and some tonal gradation when converting from IIQ; photographic detail may be reduced in strict bilevel outputs.
This converter saved me hours by simplifying IIQ to FAX conversion.
Emma R.
Photographer
Reliable and easy to use, perfect for our document workflow.
Mark L.
Office Manager
Fast results and great quality on converted files.
Sophia K.
Graphic Designer
Start your free IIQ to FAX conversion now.
Drag your file here to to upload.
Up to 250MB
If you need editable high-detail images, export a grayscale TIFF from the IIQ first rather than a directly compressed bilevel FAX file.