A cron expression is a string of characters that defines a schedule for a task to be executed automatically. It's a powerful and standard way to schedule jobs on Unix-like operating systems, but the syntax can be cryptic and hard to read.

This tool takes a standard cron expression and translates it into a plain, human-readable description. For example, the expression '*/5 * * * *' is translated to "At every 5th minute." This makes it much easier to understand and verify your scheduled tasks without having to manually decode the syntax.