The termsafe can have several meanings depending on the context. It may refer to:

Safe (HTTP Methods)

An HTTP method issafe if it doesn't alter the state of the server. In other words, a method is safe if it leads to a read-only operation. Several common HTTP methods are safe:GET,HEAD, orOPTIONS. All safe methods are also idempotent, but not all idempotent methods are safe. For example,PUT andDELETE are both idempotent but unsafe.