Claude passive voice fixer
What the Claude passive voice fixer does
Paste in text Claude drafted and this tool finds the passive constructions bound up with its hedging and rewrites the ones actually weakening the sentence: the ones hiding who did something, or softening a claim into passive as another form of qualification. It leaves passive sentences alone where passive is the right call, because Claude gets that right sometimes too.
It runs on our AI server rather than in your browser, since judging which passive sentences need fixing takes real reading, not a mechanical find-and-replace. You get 5 free runs every rolling 24 hours, no account and no signup required to start.
The problem
Why Claude text leans on passive voice so heavily
Claude's caution shows up as more than hedging phrases. It also shows up as passive constructions that quietly soften a claim by removing the actor from it: "a decision was reached" reads as less committal than "we decided," and Claude reaches for that softer version even where nobody was actually trying to dodge anything.
There's a real distinction worth holding onto here, and while it's true that Claude's carefulness produces genuinely useful hedges in a lot of contexts, it also produces passive constructions on sentences that would read more clearly, and more confidently, stated with an actual subject doing the action.
How it works
How to fix passive voice in three steps
Paste, run, copy. Nothing to configure first.
- Step 1
- Paste the Claude draft into the box, whole document or a section at a time.
- Step 2
- Press Fix. The text goes to our AI server, which finds passive constructions and rewrites the ones hiding an agent or softening a claim unnecessarily.
- Step 3
- Read the result against your original. Sentences where passive voice is the right choice for the context are left as they were.
Why it matters
What Claude's default passive voice actually costs a document
Passive voice compounds Claude's tendency toward qualification: a sentence that's already hedged with "it could be argued that" reads as doubly uncertain when the claim inside it is also stated passively, and a reader has to work through two layers of softening to find the actual point.
The agentless version costs something sharper: it reads as evasive whether or not that was the intent, since a careful reader notices when a sentence could easily have named who did something and chose the passive instead.
The actual test
When passive voice is the right call, Claude included
Passive voice is correct, not just tolerable, in a specific set of situations, and the fixer is built to recognise them rather than flatten every passive sentence Claude wrote into active voice.
The test is whether the agent is unknown, irrelevant to the point, or being de-emphasised on purpose because the action or the result matters more than who did it. Scientific writing leans on passive constructions for exactly this reason: a methods section says the samples were incubated because the procedure matters, not the specific hand that did it, regardless of which model wrote the sentence.
The failure mode isn't passive voice itself, it's agentless passive dodging a responsible party, and passive voice used as one more layer of hedging where a direct claim would actually read better. The fixer targets those two cases specifically.
Straight answer
Does this make Claude text undetectable?
No, and fixing passive voice was never going to do that on its own. We don't test this tool against AI detectors and we don't tune it to beat one, so we have no basis to promise what a detector will conclude about text you've run through it.
What it reliably does is remove one specific, well documented tell: agentless and hedge-driven passive constructions Claude reaches for constantly. That's a real improvement in how the writing reads, independent of any claim about detection.
In practice
Who uses the Claude passive voice fixer, and when
Writers and editors cleaning up a Claude-assisted draft who want to catch the sentences quietly dodging responsibility or over-qualifying a claim, without stripping out the passive constructions doing legitimate work elsewhere in the same document.
Managers writing incident reports drafted with Claude's help reach for it specifically to catch the agentless passive that quietly avoids naming who was responsible. If you'd like, this tool can also flag the sentences worth reading twice for tone, though most people find the fix alone is enough.