Convert STW to IFF

For a hassle-free and effective conversion of your STW files to IFF format, it is recommended to utilize a trusted software tool like reaConverter.

reaConverter is a fast offline STW to IFF converter. Whether you need to convert hundreds or thousands of STW files, reaConverter can handle it all.

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How to Convert Multiple STW Files to IFF?

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 STW files

Start reaConverter and load all the .stw files you intend to convert into .iff. The software supports multiple STW conversion and processes all files locally on your computer.

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

Load your STW files into reaConverter

3. Select IFF as output format

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

Select IFF as output format

4. Start STW to IFF conversion

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

Screenshot

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

STW to IFF Converter

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

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Do more with your files

Converting STW 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
Image editing

User Reviews

Average User Rating:
Last updated on June 10, 2025
"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
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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!"
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Henry R.
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"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
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"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
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"I use the online converter — it’s quick and hassle-free!"
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Jian Wong
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"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
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Helen Evans
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STW to IFF Conversion: FAQ

What are STW files?

STW images are associated with NeoPaint, an image editor developed by NeoSoft for use on Windows platforms. Some of the features included in NeoPaint are editing photos, making desktop publishing layouts and creating presentations. STW images are considered rare and difficult to open if you don't have NeoPaint installed.

What are IFF files?

IFF is an old image format associated with Amiga computers — a brand connected to Commodore, which used to be popular in the 1980s and 1990s. Commodore was one of the first types of personal computers to gain wide popularity among home users. An IFF file most likely contains an image that was created or edited using an image handling program on an Amiga computer. IFF files are currently considered obsolete and uncommon, so opening them with regular image viewers might be difficult.

Can reaConverter convert STW to IFF?

Yes! reaConverter instantly converts .stw to .iff 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 STW to IFF online?

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

How can I turn STW files into IFF on my computer?

The best way to change STWs to IFFs 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 STW to IFF.

How can I automate STW to IFF 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 STW files to IFF using the command prompt?

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

What else can I do with reaConverter?

Change format settingsChange DPIConvert DICOM filesChange photo sizeSet manual file date

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