How to Convert PEF to FITS — Quick & Free
Fast, instant PEF (PENTAX) to FITS conversion. No signup required. Just drop your .pef file and get .fits in seconds.
Batch Settings
About PEF (PENTAX) to FITS Conversion
Short answer: yes, you can convert PEF to FITS online for free, and quality is well preserved with the right settings. Just upload your .pef file to CocoConvert, pick FITS as the output, and click Convert. The whole process takes seconds.
Now for the details. PEF is Pentax's RAW format preserving maximum image data from Pentax SLR sensors. FITS is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your PEF file is decoded and re-encoded as FITS. Converting PEF to FITS maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert PEF (PENTAX) to FITS
- 1
1. Upload PEF
Drop your .pef file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select FITS
Choose .fits from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .fits file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert PEF (PENTAX) to FITS
Your PEF file is decoded and re-encoded as FITS.
Your PEF file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in FITS format
The converted file is ready for download
Format Comparison
PEF (Pentax)
.pef file
| Extension | .pef |
| MIME Type | image/x-pentax-pef |
| Category | Image |
FITS
.fits file
| Extension | .fits |
| MIME Type | image/fits |
| Category | Image |
Should You Convert PEF (PENTAX) to FITS?
When to Convert
- ✓When you need a FITS file
Frequently Asked Questions
Is PEF to FITS conversion free?
Yes. CocoConvert offers free PEF to FITS conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is PEF to FITS conversion?
Most files convert in 2–10 seconds depending on size. Large image files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded PEF file and the converted FITS file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting PEF to FITS lose quality?
Converting PEF to FITS maintains high quality with CocoConvert's optimised encoder settings.
Can I convert FITS back to PEF?
Yes, CocoConvert supports FITS to PEF conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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