SNA is an old image format used on ZX Spectrum computers for storing Mirage Microdrive snapshots. ZX Spectrum was an incipient brand of home computers released in the early 1980s and discontinued a decade later. Some of its rival brands on the European market included the Commodore 64 and Amstrad CPC. SNA images are very rare at the moment, so conversion is probably necessary in case you intend to access such a file.
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 SNA files as once.
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