However, take care while creating color gradient QR code. Contrast between light and dark areas must be strong enough; otherwise, it will not be readable. Moreover, overlaying a logo might make the QR code unreadable. So, check it yourself and make changes still it works using your own reader. NB: Some readers cannot decode inverted (white on black) QR codes. Unitag is a free service; however, the premium service offers advance features like SVG export, creation history, batch generation, analytics, etc. Try Unitag for free.
