The TN3 format is part of a group of extensions known as Tiny bitmap images, which also includes TN1, TN2 and TNY. TN3s contain high-resolution images created on Atari ST computers. All Tiny formats are currently considered obsolete and rare.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple TN3 files as once.
JPEG JPG PNG GIF TIFF TIF BMP ICO EMF WMF AI PDF EPS PS EPI WEBP WEBPLL JP2 PCX TGA DWG DWF DXF DGN WMZ CGM DRW SHP GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FAX FITS PSD PGM JXR BPG APNG DDS SVGZ CG4 FLIF AVIF
Advanced users can convert TN3 files via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.