Convert SMP to JXL

Stop converting SMP files one by one. reaConverter processes entire folders to JXL automatically — just drag, drop, and click Convert.

SMP to JXL conversion is faster with the right tool. reaConverter handles everything from a few files to thousands in one batch. Processes files consistently every time, with full control over quality and output settings.

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How to Convert Multiple SMP Files to JXL?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your SMP files

Launch reaConverter and drop in your SMP files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your SMP files into reaConverter

3. Select JXL as output format

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

Select JXL as output format

4. Start SMP to JXL conversion

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

Start Conversion

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

SMP to JXL Converter

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

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Do more with your files

Converting SMP 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 January 24, 2026
"Switching to JXL format with reaConverter was effortless. The compression is incredible - my images look perfect at half the file size of JPEGs. The batch conversion works flawlessly, saving me storage space without sacrificing quality. JXL is clearly the future, and reaConverter makes adoption painless!"
Mark T.
Mark T.
Satisfied Customer
"reaConverter’s Watch Folders feature has transformed my workflow! I set it to automatically convert my images to JXL, and now every new file I add gets optimized instantly. JXL keeps my photos crisp at half the file size of JPEGs. Super easy setup, flawless results – a must for batch processing!"
Alex R.
Alex R.
Photographer
"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
"An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness."
Elena Anderson
Elena Anderson
Happy User

SMP to JXL Conversion: FAQ

What are SMP files?

The SMP image format is associated with some software programs developed many years ago by Xionics Document Technologies. The American company was acquired in 2000 by another developer, so in case you found or were sent a SMP image it was probably created years ago. The file most likely contains a black-and-white image and is now considered rare.

What are JXL files?

JPEG XL JXL is a modern image compression format designed to replace older formats like JPEG, PNG, and even WebP. It aims to provide superior image quality at smaller file sizes while supporting advanced features for both web and professional use.

Can reaConverter convert SMP to JXL?

Yes! reaConverter instantly converts .smp to .jxl 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 SMP to JXL online?

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

How can I turn SMP files into JXL on my computer?

The best way to change SMPs to JXLs 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 SMP to JXL.

How can I automate SMP to JXL 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 SMP files to JXL using the command prompt?

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

What else can I do with reaConverter?

Copy EXIF dataConvert GIS filesConvert Gerber imagesCrop photosConvert CAD formats

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