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PEN Converter
Process entire photo libraries in minutes. reaConverter converts PEN files with control over exposure, colour, and quality.
How to Convert .pen Photos in Bulk
1. Install reaConverter
2. Select PEN Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless PEN file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.
Edit & Enhance
Do more with your images
Converting PEN images for use in a workflow? Touch up, transform, apply editing and effects to your images during conversion.
Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.
User reviews
From those who tried it
Average User Rating:Last updated on June 25, 2026
Questions & Answers
PEN images: Frequently Asked Questions
What are PEN files?
The PEN photo format from Pentax refers to an obsolete image file format that was used primarily in the company's earlier digital cameras. This format was designed to support digital photography but has since been rendered outdated due to advances in technology and the rise of more versatile and efficient formats, such as PEF and DNG. As a result, PEN files are rarely used today and are often incompatible with modern editing software and workflows. Collectors and enthusiasts of vintage photography may still encounter this format, but it lacks the widespread support and utility found in contemporary file types.
Can reaConverter open PEN files?
reaConverter fully supports the PEN image format – open, edit, and export PEN files to any other popular file format with ease.
How do I change PEN to another format?
reaConverter is a user-friendly tool for converting PEN files. Once installed on your computer, it allows you to convert all your .pen files at once with just a few clicks. You can even convert pen images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert PEN online?
If you only want to convert a few PEN images, you are welcome to try our free online PEN converter.
How can I turn PEN files on my computer to another format?
The best way to convert PEN images on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from PEN.
How can I automate PEN files conversion?
reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.
Can I convert PEN files using scripts or the command-line interface?
reaConverter provides full access to all its features from the Windows command-line shell, including the command-line pen converter.
What else can I do with reaConverter?
Convert RAW formatsConvert CAD formatsSet file dateConvert vector imagesSet new DPI
What formats can I convert a PEN file to?
Discover More
Beyond PEN conversion
Convert .pen files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.
