Is a higher-wattage laptop charger safe to use?
Yes — a higher-wattage charger with the same connector is safe. Here's why your laptop only draws the power it needs, and when wattage actually matters.
Higher wattage is safe; lower wattage is not
Your laptop draws only the current it needs, so a 90W charger safely powers a 65W laptop. The reverse is risky: a 65W charger on a 130W laptop may charge slowly, only when off, or not at all under load.
Connector and voltage must still match
Higher wattage is only safe when the connector type, and (for barrel plugs) the tip size and voltage, all match. USB-C Power Delivery handles voltage automatically.