Converting a PNG image to ZPL (Zebra Programming Language) code involves several steps. ZPL is a language used for printing labels on Zebra label printers. Here’s a general outline of the process:
Convert PNG to Monochrome Bitmap:
ZPL doesn’t support color images, so you’ll need to convert your PNG to a monochrome (black and white) bitmap. You can use various software tools or libraries to perform this conversion. One common approach is to use Python with libraries like PIL (Python Imaging Library) or OpenCV.
Resize and Adjust:
Resize the image to fit the label size you’re targeting. Also, adjust the brightness and contrast if necessary to enhance the image quality.
Thresholding:
Convert the grayscale image to a binary image using a thresholding technique. This will make the image purely black and white, without any shades of gray. Common thresholding methods include simple thresholding, adaptive thresholding, or Otsu’s thresholding
Encode the Image:
Now that you have a binary image, you need to encode it into a format that can be represented in ZPL. One common method is to encode the image as a hexadecimal string representing the pixel data. Each pixel in the image corresponds to a bit in the hexadecimal string.
Generate ZPL Code:
^XA
^LL812
^PW1218
^FO12,12^GFA,13530,13530,82,,::::::::::lN01IFCX07FA,lM03KFCV0KF,kI0IF34X01MF8T03KFE,I0QFN01XFCI0QFhL01JFEX07NFS01MF8,I0QFEM01XF8I0RFT07QFCX01JFEW01OFCR07NF,I0RFCL01XFCI0RFCS07RFEW03JFEW07PFR0OFC,I0SFL01XFCI0SFS07SFCV03JFEW0QF8P01OFE,I0SFCK01XFCI0SFCR07TFV03KFV03QFEP07PF8,I0SFEK01XFCI0TFR07TF8U03KFV07RFP0QFC,I0TFK01XFCI0TF8Q07TFEU07KFV0SF8N01RF,I0TF8J01XFCI0TFCQ07UFU07KF8T01SFCN03RF8,I0TFCJ01XFCI0TFEQ07UF8T07KF8T03SFEN03RFC,I0TFEJ01XFCI0UFQ07UFCT0LF8T07TFN07RFE,I0UFJ01XFCI0UF8P07UFET0LF8T0UF8M0TF,I0UF8I01XFCI0UFCP07VFT0LFCS01UFCL01TF8,I0UFCI01XFCI0UFEP07VFT0LFCS03UFEL01TFC,I0UFEI01XFCI0UFEP07VF8R01LFCS07VFL03TFE,I0UFEI01XFCI0VFP07VFCR01LFES0WF8K03UF,I0VFI01XFCI0VFP07VFCR01LFES0WFCK07TFE,I0VFI01XFCI0VF8O07VFCR03LFER01WF8K07TFE,I0VF8001XFCI0VFCO07VFER03LFER03WF8K0UFC,I0VFC001XFCI0VFCO07VFER03MFR07WFL0UFC,I0VFC001XFCI0VFEO07WFR03MFR07VFEK01UF8,I0VFE001XFCI0VFEO07WFR07MFR0WFEK01UF8,I0VFE001XFCI0WFO07WFR07MF8Q0WFCK01UF8,I0VFE001XFCI0WFO07WFR07MF8P01WFCK03UF,I0WF001XFCI0WFO07WF8Q0NF8P03WF8K03UF,I0WF001XFCI0WF8N07WF8Q0NF8P03WF8K03LF001KFE,I0WF001XFCI0WF8N07WF8Q0NFCP07MFEI0LFL03KFCI07JFE,I0KFJ03MF801XF8I0KF8I03MF8N07WF8Q0NFCP07MFJ01KFL07KF8I01JFC,I0KFK07LF8N03JFCP0KF8J03LFCN07JFL01LF8P01NFCP0MFEK07IFEL07KFK07IFC,I0KFK01LF8N03JFCP0KF8K0LFCN07JFM07KF8P01NFEP0MF8K01IFCL07JFEK01IF8,I0KFL07KF8N03JFCP0KF8K07KFCN07JFM03KFCP01NFEP0MFM0IFCL07JFCL0IF8,I0KFL03KFCN03JFCP0KF8K03KFCN07JFM01KFCP03NFEO01LFEM07FF8L07JFCL03FF,I0KFL01KFCN03JFCP0KF8K01KFCN07JFN0KFCP03NFEO01LFCM01FF8L07JF8L01FF,I0KFL01KFCN03JFCP0KF8L0KFEN07JFN0KFCP03OFO03LF8N0FFM07JF8M0FE,I0KFM0KFCN03JFCP0KF8L07JFEN07JFN07JFCP03OFO03LFO07FM0KF8M03E,I0KFM07JFCN03JFCP0KF8L07JFEN07JFN07JFCP07OFO03KFEO03EM0KF8M01E,I0KFM07JFEN03JFCP0KF8L03JFEN07JFN07JFCP07OF8N07KFEO01CM0KF8N0C,I0KFM07JFEN03JFCP0KF8L03JFEN07JFN07JFCP07OF8N07KFCO01CM0KF8,I0KFM03JFEN03JFCP0KF8L03JFEN07JFN07JFCP0PF8N07KF8P08M0KF8,I0KFM03JFEN03JFCP0KF8L01JFEN07JFN07JFCP0PF8N0LF8X0KF8,I0KFM03JFEN03JFCP0KF8L01KFN07JFN07JFCP0PFCN0LFY0KF8,I0KFM03JFEN03JFCP0KF8L01KFN07JFN07JF8P0PFCN0LFY0KF8,I0KFM01JFEN03JFCP0KF8L01KFN07JFN07JF8O01PFCM01KFEY0KFC,I0KFM01JFEN03JFCP0KF8L01KFN07JFN07JF8O01PFEM01KFEY0KFC,I0KFM01JFEN03JFCP0KF8L01KFN07JFN07JF8O01PFEM01KFCY0KFE,I0KFM01JFEN03JFCP0KF8L01KFN07JFN07JF8O03PFEM01KFCY0LF,I0KFM01JFEN03JFCP0KF8L01KFN07JFN0KF8O03PFEM01KF8Y07KF8,I0KFM01JFEN03JFCP0KF8L01KFN07JFN0KFP03QFM03KF8Y07KFC,I0KFM01JFEN03JFCP0KF8L01KFN07JFN0KFP03QFM03KF8Y07LF,I0KFM01JFEN03JFCP0KF8L01KFN07JFM01KFP07JFC1KFM03KFg07LFC,I0KFM01JFEN03JFCP0KF8L01JFEN07JFM01JFEP07JF807JF8L03KFg07MF,I0KFM01JFEN03JFCP0KF8L01KFN07JFM03JFEP07IFE003JF8L03KFg07MFC,I0KFM03JFEN03JFCP0KF8L01KFN07JFM07JFEP0JFE001JF8L03KFg07NF8,I0KFM03JFEN03JFCP0KF8L01JFEN07JFL01KFCP0JFCI0JFCL07JFEg03NFE,I0KFM03JFEN03JFCP0KF8L01JFEN07JFL07KFCP0JF8I07IFCL07JFEg03OFC,I0KFM03JFEN03JFCP0KF8L03JFEN07VF8O01JF8I07IFCL07JFEg03PF,I0KFM07JFEN03JFCP0KF8L03JFEN07VF8O01JFJ03IFCL07JFEg01PFE,I0KFM07JFCN03JFCP0KF8L03JFEN07VFP01JFJ03IFEL07JFEg01QF,I0KFM0KFCN03JFCP0KF8L07JFEN07UFEP01IFEJ03IFEL07JFCL0PFJ01QFE,I0KFM0KFCN03JFCP0KF8L07JFEN07UFEP03IFEJ01IFEL07JFCL0PF8J0RF,I0KFL01KFCN03JFCP0KF8L0KFEN07UFCP03IFEJ01JFL07JFCL0PF8J0RFC,I0KFL01KFCN03JFCP0KF8K01KFCN07UF8P03IFEJ01JFL0KFCL0PF8J07QFE,I0KFL03KFCN03JFCP0KF8K03KFCN07UFQ07IFEJ01JFL0KFCL0PF8J07RF8,I0KFL07KF8N03JFCP0KF8K07KFCN07TFEQ07IFEJ01JFL0KFCL0PF8J03RFC,I0KFL0LF8N03JFCP0KF8K0LFCN07TFCQ07SF8K0KFCL0PF8J03RFE,I0KFK03LF8N03JFCP0KF8J01LF8N07UFQ07SF8K0KFCL0PF8J01SF,I0KFK0MFO03JFCP0KF8J0MF8N07UF8P0TF8K0KFCL0PF8K0SF8,I0WFO03JFCP0WF8N07UFCP0TFCK0KFCL0PF8K07RFC,I0WFO03JFCP0WFO07VFP0TFCK0KFCL0PF8K03RFE,I0VFEO03JFCP0WFO07VF8N01FFEN01FFCK0KFCL0PF8K01RFE,I0VFEO03JFCP0WFO07VFCN01FFEN01FFCK0KFCL0PF8L0SF,I0VFEO03JFCP0VFEO07VFEN01FFEN01FFEK0KFCL0PF8L07RF8,I0VFCO03JFCP0VFEO07WFN01FFEN01FFEK0KFCL0PF8L03RF8,I0VFCO03JFCP0VFCO07WFN03FFCN01FFEK0KFCL0PF8M0RFC,I0VF8O03JFCP0VFCO07WF8M03FFCN01IFK0KFCL0PF8M03QFC,I0VF8O03JFCP0VF8O07WFCM03FFCO0IFK07JFCL0PF8M01QFE,I0VFP03JFCP0VF8O07WFCM07FFCO0IFK07JFCL0PF8N07PFE,I0UFEP03JFCP0VFP07WFEM07FFCO0IFK07JFEL0PF8N01QF,I0UFEP03JFCP0UFEP07WFEM07FFCO0IF8J07JFEL0PF8O03PF,I0UFCP03JFCP0UFEP07XFM07FFCO0IF8J07JFEL0PF8P0PF,I0UF8P03JFCP0UFCP07XFM0IFCO0IF8J07JFEL0PF8P01OF,I0UF8P03JFCP0UF8P07JFM01LFM0IFCO0IFCJ07JFEL0PF8Q03NF8,I0UFQ03JFCP0UFQ07JFN07KF8L0IFCO0IFCJ07JFEL0PF8R0NF8,I0TFEQ03JFCP0TFEQ07JFN01KF8K01IFCO0IFCJ07KFL0PF8R03MF8,I0TFCQ03JFCP0TFCQ07JFO0KF8K01IFCO0IFCJ03KFL0PF8S0MF8,I0TFR03JFCP0TF8Q07JFO07JFCK01IF8O0IFEJ03KFQ0KF8S03LFC,I0SFER03JFCP0TFR07JFO07JFCK01IFCO0IFEJ03KFQ0KF8T0LFC,I0SFCR03JFCP0SFCR07JFO07JFCK03IF8O0IFEJ03KF8P0KF8T07KFC,I0SFS03JFCP0SF8R07JFO03JFCK03IFCO0JFJ03KF8P0KF8T03KFC,I0RFCS03JFCP0RFES07JFO03JFCK03IF8O0JFJ01KF8P0KF8T01KFC,I0RFT03JFCP0RF8S07JFO03JFCK07IF8O07IFJ01KFCP0KF8U0KFC,I0QFCT03JFCP0QFCT07JFO03JFEK07IF8O07IFJ01KFCP0KF8U0KFC,I0PFCU03JFCP0PFEU07JFO03JFEK07IF8O07IF8I01KFEP0KF8U07JFC,I0KFgG03JFCP0KF8g07JFO03JFEK07IF8O07IF8I01KFEP0KF8U07JFC,I0KFgG03JFCP0KF8g07JFO03JFEK0JF8O07IF8J0LFP0KF8U07JFC,I0KFgG03JFCP0KF8g07JFO03JFEK0JF8O07IFCJ0LFP0KF8K06O03JFC,I0KFgG03JFCP0KF8g07JFO03JFEK0JF8O07IFCJ0LF8O0KF8K0FO03JFC,I0KFgG03JFCP0KF8g07JFO03JFEJ01JF8O07IFCJ0LF8O0KF8K0F8N03JFC,I0KFgG03JFCP0KF8g07JFO03JFEJ01JF8O07IFCJ07KFCO0KF8J01FCN03JFC,I0KFgG03JFCP0KF8g07JFO03JFEJ01JF8O07IFEJ07KFEO0KF8J01FEN03JFC,I0KFgG03JFCP0KF8g07JFO03JFEJ01JF8O07IFEJ07KFEO0KF8J03FFN07JFC,I0KFgG03JFCP0KF8g07JFO07JFEJ03JF8O07IFEJ03LFO0KF8J07FF8M07JFC,I0KFgG03JFCP0KF8g07JFO07JFCJ03JF8O03JFJ03LF8M01KF8J07FFCM07JFC,I0KFgG03JFCP0KF8g07JFO0KFEJ03JF8O07JFJ01LFCM03KF8J0IFEM07JFC,I0KFgG03JFCP0KF8g07JFO0KFCJ07JFP03JFJ01LFEM07KF8J0JF8L0KFC,I0KFgG03JFCP0KF8g07JFN01KFCJ07JFP03JF8I01MFM0LF8I01JFCL0KF8,I0KFgG03JFCP0KF8g07JFN03KFCJ07JFP03JF8J0MFCK03LF8I01KFK01KF8,I0KFgG03JFCP0KF8g07JFN07KFCJ0KFP03JF8J0NFK0MF8I03KFCJ03KF8,I0KFgG03JFCP0KF8g07JFN0LFCJ0KFP03JF8J07MFCI03MF8I07LFJ07KF8,I0KFgG03JFCP0KF8g07JFM07LFCJ0KFP03JFCJ07NF801NF8I07LFE003LF8,I0KFgG03JFCP0KF8g07XF8J0KFP03JFCJ03YF8I0WF,I0KFgG03JFCP0KF8g07XF8I01KFP03JFCJ03YF8I0WF,I0KFgG03JFCP0KF8g07XF8I01KFP03JFCJ01YF8001WF,I0KFgG03JFCP0KF8g07XF8I01KFP03JFEJ01YF8001VFE,I0KFgG03JFCP0KF8g07XFJ03KFP03JFEK0YF8003VFE,I0KFgG03JFCP0KF8g07XFJ03KFP03JFEK07XFI03VFE,I0KFgG03JFCP0KF8g07XFJ03KFP03KFK07XFI01VFC,I0KFgG03JFCP0KF8g07WFEJ03KFP03KFK03WFEJ0VFC,I0KFgG03JFCP0KF8g07WFEJ07KFP03KFK01WFCJ0VFC,I0KFgG03JFCP0KF8g07WFCJ07JFEP03KF8J01WF8J07UF8,I0KFgG03JFCP0KF8g07WFCJ07JFEP03KF8K0WFK03UF,I0KFgG03JFCP0KF8g07WF8J0KFEP01KF8K07UFEK01UF,I0KFgG03JFCP0KF8g07WF8J0KFEP01KF8K03UFCL0TFE,I0KFgG03JFCP0KF8g07WFK0KFEP01KFCK01UF8L07SFE,I0KFgG03JFCP0KF8g07WFK0KFEP01KFCL0UFM03SFC,I0KFgG03JFCP0KF8g07VFEJ01KFEP01KFCL07SFEM01SF8,I0KFgG03JFCP0KF8g07VFCJ01KFEP01KFEL03SFCN07RF,I0KFgG03JFCP0KF8g07VF8J01KFEP01KFEL01SFO03QFE,I0KFgG03JFCP0KF8g07VFK03KFEP01KFEM0RFEO01QFC,I0KFgG03JFCP0KF8g07UFEK03KFEP01KFEM07QF8P07PF8,I0KFgG03JFCP0KF8g07UFCK03KFEP01LFM01QFQ03PF,I0KFgG03JFCP0KF8g07UFL03KFEP01LFN07OFCR0OFE,I0KFgG03JFCP07JFgG07TFEL07KFEP01LFN03OFS03NF8,iQ07TF8L07KFCP01LF8N0NFCT0MFE,iQ07SFEM07KFEP01LF8N01MFU01LF8,iQ07SFN0LFCP01LF8O07KF8V03JFC,iQ07QFEO0LFCQ0LF8P07IF8X01FFC,,::::::::::::::^FS
^FT160,250^BY3,2,140${barcode}^FS
^FT330,500^BY3,2,200^BCN,,N,N^FD>:${amazonfnsku}^FS
^FT30,680^A0N,80,80^FB550,2,0,L^FH\^FD${displayname}^FS
^FT30,760^A0N,80,80^FH^FD${itemid}^FS
^PQ${printqty}
^XZ
basic example, and the actual ZPL code you generate will depend on your specific requirements, such as label size, image resolution, and printer capabilities. You may need to adjust parameters and experiment to get the desired output.