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TNL Converter
TNL converter that handles any volume. From a few files to thousands, the results stay consistent.
How to Convert .tnl Files in Bulk
1. Install reaConverter
2. Select TNL Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless TNL file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.
Extra Tools
Do more with your files
Converting TNL files for use in a larger project? 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.
User reviews
From those who tried it
Average User Rating:Last updated on July 26, 2026
Questions & Answers
TNL files: Frequently Asked Questions
What are TNL files?
TNL is an obsolete image format storing thumbnail images. It is considered rare and probably difficult to open using regular image viewers. Conversion to more popular formats might be the best way to access TNL files.
Can reaConverter open TNL files?
reaConverter fully supports the TNL file format – open, edit, and export TNL files to any other popular file format with ease.
How do I change TNL to another format?
reaConverter is a user-friendly tool for converting TNL files. Once installed on your computer, it allows you to convert all your .tnl files at once with just a few clicks. You can even convert TNL files directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert TNL online?
If you only want to convert a few TNL files, you are welcome to try our free online TNL converter.
How can I turn TNL files on my computer to another format?
The best way to convert TNL files on your PC is to get 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 TNL.
How can I automate TNL files conversion?
reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.
Can I convert TNL files using scripts or the command-line interface?
reaConverter provides full access to all its features from the Windows command-line shell, including the command-line tnl converter.
What else can I do with reaConverter?
Vectorize imagesChange bit depthChange format settingsCopy metadata (EXIF, IPTC)Convert CAD formats
What formats can I convert a TNL file to?
Discover More
Beyond TNL conversion
Convert .tnl files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
