Convert RAS to FLIF

The quick and simple way to change your RAS into FLIF files is to use a quality piece of software, such as reaConverter.

reaConverter is a standalone software designed for bulk RAS to FLIF conversion. reaConverter also includes features for resizing, cropping, and editing images, as well as batch processing capabilities that allow users to automate repetitive tasks.

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How to Convert Multiple RAS Files to FLIF?

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 RAS files

Start reaConverter and load all the .ras files you intend to convert into .flif. The software supports multiple RAS conversion and processes all files locally on your computer.

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

Load your RAS files into reaConverter

3. Select FLIF as output format

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

Select FLIF as output format

4. Start RAS to FLIF conversion

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

Start Conversion

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

RAS to FLIF Converter

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

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Do more with your files

Converting RAS 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.

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User Reviews

Average User Rating:
Last updated on August 01, 2025
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
Sarah Lane
Sarah Lane
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
Robert Williams
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"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"
Henry R.
Henry R.
Happy User
"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."
Paul Baker
Paul Baker
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RAS to FLIF Conversion: FAQ

What are RAS files?

The RAS file extension represents the CALS Raster File Format, a standard developed by the U.S. Department of Defense for the interchange of monochrome raster graphics. It is primarily used for storing high-resolution, black-and-white images such as engineering drawings, technical manuals, and scanned documents. CALS RAS files are typically used in military, aerospace, and government applications due to their consistency and archival suitability. The format supports compression and is optimized for printing and long-term storage.

What are FLIF files?

FLIF (Free Lossless Image Format) is a royalty-free format launched at the end of 2015 as "work in progress" with the aim of offering a better alternative for storing lossless images than the existing PNG, WebP, BPG, JPEG2000 and JPEG XR. FLIF provides similar image quality as the other extensions, but in a file size than can be up to 74% smaller. The new format uses a form of the Adam7 algorithm for compressing images, offering progressive interlacing that allows users to obtain a reasonable encoding of an image even from a partial download.

Can reaConverter convert RAS to FLIF?

Yes! reaConverter instantly converts .ras to .flif 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 RAS to FLIF online?

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

How can I turn RAS files into FLIF on my computer?

The best way to change RASs to FLIFs 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 RAS to FLIF.

How can I automate RAS to FLIF 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 RAS files to FLIF using the command prompt?

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

What else can I do with reaConverter?

Copy metadata (EXIF, IPTC)Change format settingsChange DPIConvert RAW photosConvert Gerber files

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