The advancement of electronic technology is increasingly directed towards flexibility, miniaturisation, and sustainability, reflecting the growing demand for next generation electronic devices. Traditional rigid printed circuit boards (PCBs) and complex subtractive manufacturing processes limit their suitability for wearable, flexible, and stretchable systems. In this context, conductive inks have emerged as a transformative solution, enabling conductive pathways to be deposited directly onto diverse substrates such as plastics, glass, ceramics, and textiles through additive printing techniques including screen printing, inkjet printing, and gravure. This approach reduces material waste, simplifies processing, and allows seamless integration into flexible and stretchable platforms, facilitating applications in printed electronics, radio-frequency identification (RFID) tags, biosensors, flexible displays, and energy storage systems.