About HumanizerAI

HumanizerAI is a free writing-tool site built around one job: making text read like a person wrote it. The AI humanizer strips the statistical tells of machine drafts; the rewriter fixes clarity in human drafts; the paraphrasing tool restates ideas in genuinely different structures; and the heuristic AI detector scores text entirely in your browser. The free tier is 5 passes a day at 300 words each — no account anywhere on the site.

What gets stored: nothing

Text you paste is sent to the rewrite engine, transformed, and returned. We keep no copy, build no corpus, train nothing on it, and there is no account to attach history to. The detector runs as plain math in your browser and never touches the network. Paid capacity lives in an anonymous browser token (30,000 words for $2.99, one-time) — no email, no profile.

Honest limits

Rewrites keep your facts, numbers and names — but every output is still a draft you should proofread. The detector is a heuristic reference, not an authorship test: wholly human writing can score as machine-like, and no detector on the market, paid or free, reliably tells them apart. We promise better-sounding text; we do not promise any specific detector score, and pages that compare tools say so plainly.

Trademarks and affiliation

Not affiliated with QuillBot, Learneo, ZeroGPT, GPTZero or any other product named in comparisons — those names are their owners' trademarks, used only to describe the tools people ask about (see the free-alternatives comparison). Free-tier numbers for other products come from third-party reviews, change without notice, and are flagged as such wherever they appear.

HumanizerAI is part of a small independent network of tool sites, including SAT score calculators, email subject line tools and painting cost calculators. Questions or corrections: contact page.