The DRL image format is included in the Gerber group, which consists of over 20 standardized extensions used in the production of printed circuit boards (PCB). Similar formats in the group — such as GTS, GBS or GTO — contain descriptions of solder masks, silkscreens and various other layer data. DRL files cover drilling data and they are vectors used as input files by photoplotters which fabricate PCBs.
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 DRL files as once.
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