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Thumbnail image format
File type: Bitmap image file
A tnl file extension is related to the Thumbnail picture image file format.
File type category:
Bitmap image file
Date updated: June 23, 2025
Record marked as obsolete and not updated for a long time.
The tnl file extension is associated with the some kind of thumbnail image file format. The tnl file stores picture image.
The TNL thumbnail image format seems to be obsolete without support from developer.
Use XnView to view content of *.tnl files.
XnView is able to convert *.tnl files to other picture image file formats.
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