AI humanizer: humanize AI text so it reads naturally

What the rewrite changes, and what it keeps

It works like a careful editor that makes AI text sound natural: it takes out the stiff, padded habits common in AI-assisted drafts and leaves the substance alone.

It keeps your hedges too: if your draft says a plan may work, the rewrite does not say it will. It adds no facts, examples or opinions of its own.

Four modes, one example

Every mode keeps the meaning; only the voice changes. Here is one stiff sentence of our own, "We are pleased to inform you that your request has been successfully processed.", in each mode:

Check your draft on your device first

Three checks run in your browser, and your text stays on your device. They are free, with no daily limit:

• The stock phrase check marks words and phrases that make writing sound stiff, such as "delve into", grouped by kind, with a plain swap for each. It counts matches and gives no score.
• The long dash fixer swaps em and en dashes for commas, "to" in number ranges, or hyphens, and Undo puts them back.
• Sentence rhythm shows your sentence count, average length and how much the length varies. Text where every sentence runs the same length reads flat.

This is a writing check, not an AI detector: people use these phrases too, so a match says nothing about who wrote a text. The list is our own, built from research on words that became far more common after AI chat tools spread (sources below). It covers English for now.

Our guide to the signs of AI writing goes through every group the check marks, with a plain swap for each word and before and after examples.

What is sent, and what we keep

Your text stays on your device while you type, paste or run the checks. When you press Rewrite, your draft and the mode go through uncrop.si's server to the AI service we use, which sends the rewrite back. We keep neither, and the AI service is not allowed to train AI models on them.

For each rewrite we log counts only (the mode, words in and out, language, cost and time) with a pseudonymous code that changes every day, and delete that log after 30 days. Google Analytics counts which buttons are used, with ranges such as how many phrases a check found, never your text. The details are on our privacy and terms page.

Use it honestly

Do not use it to hand in work as your own where AI is not allowed, to write fake reviews or posts, or to mislead anyone about who wrote something. The AI tools on uncrop.si are meant for adults (18 and over).

Works in your language

The rewrite comes back in the language you paste, with your regional spelling (US or UK English, Brazilian or European Portuguese), and never translates; a draft that mixes languages keeps each part as it is. It handles Spanish, French, German, Turkish, Indonesian, Hindi, Japanese and many more.

Languages written without spaces between words are measured in characters instead: about 4,400 to 4,900 per rewrite in Chinese, 4,800 to 5,400 in Japanese and 5,400 to 5,500 in Thai, depending on the text. Hindi, Persian and Urdu get the full 1,000 words, and Arabic, Marathi and Nepali about 830 to 1,000. Where words are long in their own script, fewer fit in one rewrite: about 500 words in Malayalam, 530 to 640 in Kannada or Telugu, 630 to 760 in Odia, Tamil or Bengali, and 750 to 950 in Gujarati, Punjabi or Sinhala, depending on the text. The counter shows how many fit in your language, and the page tells you before anything is sent, so you can split the draft.

AI humanizer or paraphrasing tool?

A paraphrasing tool rewords text, often sentence by sentence, and can drift from what you meant. This edits for natural reading and keeps your meaning, structure and facts.

Starting from a picture? Image to text and screenshot to text copy the words into a box you can paste here, and translate an image handles other languages. The AI image checker reads the AI labels and Content Credentials a picture carries.