I have luck with using the free “image to gerber” converter (free software). It took a while to figure out the scaling concern and after that, the converter worked really well. I did not experience any resolution issue with it. Rather, I was taken aback by the “outline not detected” error when I uploaded the gerbers’ zip file to a PCB fabrication website. After a few days of frustrating attempts to resolve the issue with the outline layer gerber, my efforts paid off and I successfully got the PCBs fabricated. They arrived in my mailbox safely, much to my delight.
Here’s a step-by-step video for anyone who is keen on going the same route.
