Free PNG to FITS Converter

Looking for a simple and reliable way to convert PNG files to FITS? Try reaConverter Lite — our free image converter designed for smooth, high-quality results.

reaConverter Lite supports batch processing, so you can convert dozens or even hundreds of PNGs to FITS in one go. Work fully offline, fine-tune resolution and quality settings, and even use right-click conversion directly from Windows Explorer for ultimate convenience.

Fast. Free. Fully offline.

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How to Convert Multiple PNG Images to FITS?

1. Download and Install reaConverter Lite

reaConverter Lite is quick to download, easy to install, and ready to launch in seconds. This lightweight, standalone software is highly efficient at handling a wide range of batch image conversions. Plus, it lets you apply essential image editing options — such as resizing, rotating, or adjusting quality — during the conversion process.

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Install reaConverter Lite

2. Load your PNG files

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

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

Load your PNG 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 PNG 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.

PNG to FITS — Free

Convert your PNG files to FITS in seconds using reaConverter Lite — the fast, free, and offline solution. All conversions are processed locally on your PC, ensuring maximum speed and privacy with no internet required.

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Do more with your images

Converting PNG 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.

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User Reviews

Average User Rating:
Last updated on April 23, 2025
"For professional-grade PNG to WebP conversions, avoid online tools with restrictive quotas. reaConverter delivers batch processing at local disk speeds – the only viable option for frequent use."
Matthew Hernandez
Satisfied Customer
"I design stickers but could never cleanly resize my PNG logos without pixelation. reaConverter’s PNG-to-SVG tool keeps everything sharp—even when scaling up. My Etsy shop looks way more professional now!"
Lisa Palmer
Digital Artist
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
Happy User
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Healthcare IT
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Satisfied Customer

PNG to FITS Conversion: FAQ

What are PNG files?

The PNG (Portable Network Graphics) file format was designed in the mid-1990s as an improved alternative to the previously existing JPG and GIF formats, and as an extension which would be particularly web-friendly. In time, PNG files have gained a wide popularity and are highly appreciated at the moment for their ability to provide a lossless compression of images, which translates in high-quality and detailed renderings.

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 PNG to FITS?

Yes! reaConverter instantly converts .png 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.

Is reaConverter free?

Yes — reaConverter Lite is completely free to use! It offers powerful batch image conversion, right-click integration, and support for popular formats, all without requiring an internet connection. For advanced features like automation, metadata editing, and support for rare formats, you can upgrade to the Pro edition anytime.

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 PNG to FITS online?

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

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

The best way to change PNGs 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 PNG to FITS.

How can I automate PNG 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 PNG 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 png to fits converter for batch processing.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceConvert DICOM filesResize photoChange file date

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Get a free, user-friendly tool for image conversion and editing — with fast results and full control. Use the right-click menu to convert files instantly, or process batches with essential editing options.
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