Convert JNG to FITS

The quick and simple way to convert your JNG into FITS files is to use a quality piece of software, such as reaConverter.

reaConverter is offline conversion software that supports multiple file formats, including JNG to FITS conversion, along with image editing capabilities.

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How to Convert Multiple JNG Files to FITS?

1. Download and Install reaConverter

reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.

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Install reaConverter

2. Load your JNG files

Start reaConverter and load all the .jng files you intend to convert into .fits. The software supports multiple JNG conversion and processes all files locally on your computer.

Select JNGs from a folder or by drag-and-dropping them directly into the reaConverter window.

Load your JNG files into reaConverter

3. Select FITS as output format

Pick the FITS as output format and choose the destination folder where you want to save new .fits files.

Select FITS as output format

4. Start JNG to FITS conversion

Then simply press Convert button and your conversion will begin in no time!

Screenshot

Once the conversion is complete, you can find your FITS files in the destination folder you selected.

JNG to FITS Converter

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

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Do more with your files

Converting JNG files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
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User Reviews

Average User Rating:
Last updated on June 07, 2025
"Essential for our astroimaging pipeline! reaConverter perfectly handles FITS files from our research telescope, preserving all WCS coordinates and photometric data during batch conversion to TIFF. Now we process 100+ deep-sky exposures nightly without losing critical metadata for our exoplanet studies!"
⭐⭐⭐⭐⭐
Joseph Wilson
Satisfied Customer
"reaConverter makes FITS conversion incredibly easy. We batch convert astronomical images to standard formats for presentations and analysis, all automated through the command-line. It’s fast, reliable, and handles large datasets without issues."
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Laura N.
Astrophysics Research Assistant
"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."
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Roger Cook
Happy User
"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."
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Jamal Bailey
Satisfied Customer
"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"
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Jason P. Bailey
Non-Profit Coordinator
"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"
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Richard E. Miller
Satisfied Customer

JNG to FITS Conversion: FAQ

What are JNG files?

JNG (JPEG Network Graphics) is an offshoot of the PNG/MNG family that packages a JPEG-compressed RGB image together with a lossless PNG-style alpha channel, giving you full transparency at smaller file sizes than an equivalent PNG. It uses the same chunked structure as PNG, making it easy to embed metadata or animation cues when paired with MNG. Despite its clever hybrid design, mainstream browsers and tools never embraced JNG, so it remains a niche format overshadowed by PNG, WebP, and AVIF.

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

Can reaConverter convert JNG to FITS?

Yes! reaConverter instantly converts .jng 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.

Can I convert JNG to FITS online?

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

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

The best way to change JNGs 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 JNG to FITS.

How can I automate JNG 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 JNG 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 jng to fits converter for batch processing.

What else can I do with reaConverter?

Change file creation dateConvert Gerber filesCrop imagesConvert RAW filesConvert DICOM files

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