MARZPassive Voice Checker
Highlight likely passive-voice sentences in your writing.
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About this tool
Paste text to highlight sentences that are likely written in passive voice, using rule-based pattern matching for 'to be' plus a past participle — the same technique used by popular open-source prose linters.
How to use
- Paste your text into the box.
- Sentences flagged as likely passive voice are highlighted inline.
- Rewrite flagged sentences in active voice where it improves clarity.
FAQ
Is this powered by AI?
No — it's rule-based pattern matching (a form of 'to be' followed by a past participle), the same approach used by well-known open-source prose linters like write-good.
Can it have false positives?
Yes, some active constructions can superficially match the pattern. Use it as a prompt to review flagged sentences, not as an infallible rule.