I've design a circuit where Atmega328-PU chip along with i2C Serial interface is used. The circuit is fine and all the components are placed but there is a slight problem. When i take the export to PDF or SVG to create PCB (keep in mind that i am going to create PCB at Home) the size of component is different, it seems they are smaller in size. I've also try to search if this problem is faced by any other user but unable to find the same over the internet. Please guide me so that i can finish what i've started; Moreover, i've also try to export the file in DXF and convert it with online tool to PDF but DXF file only contains space for holes not complete PCB and even after converting components are shown quiet big. One more thing i need to mentioned that i'm exporting PCB in PDF using 1:1 size and measuring it before taking the printout so as per my assumption, it doesn't matter which printer is connected to system just to create export, even i've also tried to create export on the system where printer is not attached but still the size is same (i.e. smaller) Kindly guide me for that, in case you need any snapshot from my side do let me know i'll share the same