AI の文章を、人間の文章に。 書き換えはすべてあなたの端末の中で。
無料の AI ライティング＆リライトツール。下書きを貼り付ければ、機械っぽさを採点し、ブラウザの中でまるごと書き直し、変えた単語を一つずつ見せます。アップロードなし、登録不要。
より良い文章に。しかもあなたの文章のまま。
3 つのリライトエンジンはすべて端末内で動作します。下書きがサーバーに送られることはありません。
100% オンデバイス・プライベート
リライトは Chrome 内蔵 AI、ローカルのオンデバイスモデル、またはオフラインのルールエンジンでブラウザ内に実行されます。何もアップロードされません。
スコアが見える
文のリズム、予測しやすさ、語彙、能動態、文頭の多様性、AI 特有の言い回し——6 つの指標を 1 つのスコアにまとめ、変更前と変更後の両方で表示します。
単語単位の差分
すべての変更が原文と対比してハイライトされます。裏で書き換えられることはなく、残すかどうかはあなたが決められます。
4 つのモード、3 つのトーン
人間らしく、整える、詳しくする、短くする。アカデミック、ビジネス、カジュアルから選べます。元の文体をそのまま保つこともできます。
貼り付け、採点、リライト。
- 01
文章を貼り付ける
下書き、エッセイ、モデル出力の段落などを入れてください。ダウンロード不要で、その場でローカルに分析されます。
- 02
スコアを読む
どの指標が機械的で、どの言い回しがそれを露呈しているかをパネルが示します。
- 03
書き換えて比較する
モードと強度を選べば、スコアが下がり差分が埋まっていきます。コピー、ダウンロード、エディタへの戻しも可能です。
About the AI Humanizer
A free writing tool for anyone whose draft reads too much like a machine wrote it. Students polishing an essay, marketers editing generated copy, non-native speakers smoothing a translation, developers rewriting documentation — paste the text, see how machine-like it scores, and get a rewrite you can check word by word.
Everything happens on your own device. There is no server in the pipeline, no account, and no queue, so drafts that are confidential or unfinished stay on the machine you wrote them on.
How it works
Three engines sit behind the same interface. The offline rules engine is pure deterministic text processing — it rewrites AI-tell phrasing, breaks uniform sentence rhythm, varies openers, and shifts passive constructions to active, with no model and no download. Where the browser exposes Chrome's built-in AI (Gemini Nano), the Rewriter API produces a more natural rewrite, again with nothing to download. Finally, an optional local language model (Qwen2.5 1.5B or SmolLM2 1.7B, quantized to 4-bit) runs through Transformers.js on WebGPU for the highest-quality output — downloaded once, then cached for offline use.
Long documents are split into overlapping-by-sentence chunks so a ten-page draft is processed part by part with a live progress indicator, and the result streams in as it is produced.
Reading the AI score
The score panel combines six independent signals: sentence-length rhythm (burstiness), phrase predictability, vocabulary range, active-voice ratio, sentence-opener variety, and the presence of known AI-tell vocabulary. Each is shown as its own bar so you can see exactly which signal is dragging the score up, and the flagged-phrase list lets you swap a single term for a suggested alternative without rewriting the whole paragraph.
Treat this as a writing signal, not a verdict. Detectors disagree with each other and with themselves; a low score means the text carries fewer of the surface patterns they look for, not that any particular detector will clear it.
Modes, tones and intensity
Humanize strips the machine rhythm, Polish fixes flow while keeping your voice, Expand adds supporting detail without inventing facts, and Shorten cuts redundancy. Tone can be left as-is or pushed toward academic, professional, or casual. Intensity controls how far the rewrite is allowed to move from your original wording — light stays close, aggressive restructures freely.
Limits & requirements
Every engine is told to preserve facts, numbers, and names, but a language model can still drift; the word-level diff exists so you can verify each change before you accept it. The local model is roughly 1 GB and needs a reasonably modern device — if it fails to load, the tool falls back to the rules engine and tells you it did, rather than failing. The AI-score metrics are tuned for English and Chinese; other languages still get full text statistics, just without the phrasing analysis.
Privacy
Your text is analysed and rewritten inside your browser tab. Nothing is uploaded, stored, or logged, and there is no word limit or paywall. Once the optional model is cached, the tool keeps working with the network switched off.