Convert PEF to FITS

PEF to FITS conversion that preserves quality. reaConverter gives you control over color space, resolution, and compression.

Online converters too slow for your PEF files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. Photographers use it to batch process entire shoots in minutes.

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately. You can also resize, crop, and adjust images during conversion.

Install reaConverter

2. Load your PEF files

Open reaConverter and import your .pef files. No file limits, no slowdowns. Add as many as you need.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

3. Select FITS as output format

Pick FITS as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

4. Start PEF to FITS conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

When finished, your new .fits files will be waiting in the destination folder.

PEF to FITS Converter

reaConverter offers the fastest, simplest solution for converting your PEF files into FITS in seconds - all photos processed on your PC for maximum privacy and speed.

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Do more with your images

Converting PEF images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

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.

Image editing tools

User Reviews

Average User Rating:
Last updated on January 25, 2026

"If you've ever shot with Pentax cameras, you know the struggle of working with PEF files. Converting them to standard JPEG is a real challenge—unless you have reaConverter. Skip the online services; just install it and say goodbye to conversion headaches!"

Alan Foster

Satisfied Customer

"We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works."

David R.

IT Solutions Architect

"So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!"

Kenneth D. Carter

Satisfied Customer

"I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!"

Mark T.

Satisfied Customer

"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"

Robert Williams

Happy User

"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"

Henry R.

Happy User

PEF to FITS Conversion: FAQ

Can reaConverter convert PEF to FITS?

Yes! reaConverter instantly converts .pef to .fits with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert PEF to FITS online?

If you only need to convert a few PEF files to FITS format, feel free to try our free online free online PEF to FITS converter — perfect for small batches with no installation needed!

How can I turn PEF files into FITS on my computer?

The best way to change PEFs to FITSs on your PC is to install 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 PEF to FITS.

How can I automate PEF to FITS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert PEF files to FITS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line pef to fits converter for batch processing.

What else can I do with reaConverter?

Convert RAW photos Change format settings Change DPI Copy metadata (EXIF, IPTC)Set manual file date