Passive voice isn’t always a problem, but too much of it can bury who did what. This flags likely passive constructions so you can decide, sentence by sentence, whether to revise.
Passive Voice Checker
This is a pattern-matching heuristic (looking for "to be" + a past participle), not a full grammar parser, so it will miss some cases and flag some false positives. Passive voice isn't always wrong, either; it's often the right choice when the actor is unknown or unimportant. Use this as a prompt to review flagged sentences, not a rule to eliminate every one.