A fire extinguisher is a crucial safety device designed to control or extinguish small fires in emergency situations. It is an active fire protection tool that can save lives, protect property, and prevent a small fire from turning into a major disaster. Fire extinguishers are essential for homes, offices, factories, schools, hospitals, commercial spaces, and vehicles. There are different types of fire extinguishers, each suitable for specific classes of fire. Common types include Water-based (for Class A fires involving paper, wood, cloth), Foam (for Class A and B fires involving flammable liquids), Dry Powder (for Class A, B, and C fires including electrical equipment), Carbon Dioxide (CO₂) (for electrical and flammable liquid fires), and Wet Chemical (for kitchen fires involving oils and fats). Selecting the right type ensures effective firefighting and safety. A typical fire extinguisher consists of a cylindrical pressure vessel containing the extinguishing agent, a nozzle or hose for directing the discharge, and a safety pin to prevent accidental use. In case of a fire, the user pulls the pin, aims at the fire’s base, squeezes the handle, and sweeps side to side—following the PASS method (Pull, Aim, Squeeze, Sweep). Regular inspection, maintenance, and refilling are vital to ensure that a fire extinguisher functions properly when needed. It is recommended to check pressure gauges, expiry dates, and physical condition periodically. Fire safety regulations in many regions mandate the availability of functional extinguishers in public and private spaces. In summary, fire extinguishers are a first line of defense against fire emergencies. Having the correct type, placed in accessible locations, and ensuring regular servicing can make a critical difference in protecting lives and property from fire hazards.