escpos-corePure Epson ESC/POS encoder

ESC @ + GS v 0 + ESC N. Bitmap label printing on any spec-aligned ESC/POS printer. Anchored on Epson's published spec.

Pure Epson spec

Every byte sequence is documented in Epson's ESC/POS Application Programming Guide. No vendor extensions, no firmware-specific opcodes.

ESC @ initialise, GS v 0 raster, ESC N density, plus a realtime-status reply parser. The narrow surface label printers actually use.

Uint8Array in, Uint8Array out. Browser and Node, no platform split. Bring your own transport.