Summary: The text discusses the use of carbon dots (CDs) in various applications, highlighting their exceptional properties such as strong fluorescence, biocompatibility, and low toxicity. CDs have found applications in bioimaging, sensing, drug delivery, and environmental monitoring due to their high fluorescence quantum yield, small size, and surface functionalities that can be easily modified. The synthesis and important characteristics of CDs, including their photoluminescence and quantum confinement effects, are also emphasized. Despite their promising attributes, challenges such as maintaining stability and improving luminescence efficiency still need to be addressed to fully realize the potential of CDs in various technological and biomedical applications. The text underscores the importance of further research and development in this field to unlock the full potential of CDs and harness their unique properties for a wide range of practical uses.