Regex Editor & Tester

Matches a sequence of one or more alphanumeric characters (letters or digits, case-insensitive) immediately followed by two equals signs. This pattern is often used as a simplistic check for base64-encoded data with padding, though it is not fully accurate because it ignores the '+' and '/' characters valid in base64. It can be useful for quickly identifying strings that resemble base64 in logs or user input.