Free · Private · Fully local
Clean AI text properly.
Technically and stylistically.
One click removes technical copy/paste clutter and then analyzes writing style locally: sentence rhythm, burstiness, lexical variety, repetition, predictable transitions and passive phrasing. Optionally compare the result with your own writing style — without uploading any text.
⚡ One click🔒 100% local◈ Unicode inspector↔ Before/after diff✦ Writing style analysis◎ My writing style
INPUT
Paste your text
OUTPUT
Clean text
Everything runs locally in your browser. No upload, no API call and no storage of your text.
DIFF
What changed?
removed added
CHANGE LOG
Cleanup summary
LOCAL WRITING STYLE CHECK
See where your text feels repetitive, flat or unnatural.
KAI analyzes the cleaned text for sentence rhythm, variation, repetition, predictable transitions and passive phrasing. You get specific issues and safe suggestions. KAI never rewrites content without your choice.
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Text analysis
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The score looks at reading rhythm and style patterns. It does not claim who or what wrote the text.
Analyzed locally. No text sent anywhere.ANALYSIS
Concrete improvements
SUGGESTIONS
Conservative replacement suggestions
Conservative replacements only. Always verify that the meaning still fits.
MY WRITING STYLE
Compare AI-assisted text with the way you actually write.
Paste a text you wrote yourself. KAI builds a local style fingerprint, compares it with the text above and generates a personal writing prompt. Nothing is stored or sent anywhere.
100%browser-only
REFERENCE TEXT
A piece of writing in your own style
All calculations happen locally. The reference text disappears when you refresh the page.
STYLE PROFILE
Not analyzed yetYour local fingerprint
Add your own reference text to build a style profile.
Style similarity with current text—
PERSONAL WRITING PROMPT
Use your own style as a briefing
This prompt describes measurable characteristics of your own writing. It does not include private text from your sample.
Technically clean and better written.
Inspect hidden characters
Find zero-width Unicode, bidi markers, unusual spaces, and Cyrillic or Greek lookalikes before you publish.
Clean technical clutter
Remove copy/paste clutter, Markdown, HTML remnants, tracking parameters and unusual Unicode in one complete default run.
See exactly what changed
Character-level diff, change log and category counts show precisely what KAI changed.
Improve the writing style
Analyze rhythm, sentence variation, long sentences, repetition and generic phrasing locally. Conservative suggestions always remain reviewable.
Compare with your own style
Build a local fingerprint from your own writing, measure similarity and generate a personal writing prompt without uploading content.
What KAI does — and does not — do
KAI removes technical hidden markers and copy/paste artifacts and helps improve writing quality. It is not an AI detector and does not claim that statistical or token-based provenance watermarks can be reliably removed.
Privacy by design
Your text stays on your device.
KAI AI Text Cleaner uses JavaScript in your browser. Your input is not sent to our server, an analytics service or an AI model for processing.
Frequently asked questions
What are hidden characters in AI-generated text?
Hidden characters are Unicode code points that may not be visibly rendered, such as zero-width spaces, byte-order marks, soft hyphens and bidirectional formatting controls. They can appear after copying text between AI tools, websites, documents and editors.
Does this tool send my text to ChatGPT or another AI model?
No. Cleaning and inspection happen locally in your browser with JavaScript. The text itself does not need to leave your device.
Can I use this for WordPress, LinkedIn and e-mail?
Yes. KAI runs a full cleanup by default for WordPress, LinkedIn and e-mail. Use Advanced options only if you deliberately want to preserve a specific type of formatting.
Can this detect Cyrillic or Greek lookalike characters?
Yes. The inspector flags a set of common confusable characters that visually resemble Latin letters. KAI does not automatically replace them unless a cleanup rule explicitly changes the underlying Unicode through compatibility normalization.
Is KAI AI Text Cleaner free?
Yes. This version is free to use without registration or usage limits.
Can KAI also improve unnatural AI-style writing?
Yes. The local writing-style analysis looks at sentence variation, long sentences, repeated sentence openings, word repetition and formal or predictable phrasing. For simple patterns, KAI offers conservative replacement suggestions that you can review yourself.
Can KAI analyze my own writing style?
Yes. Paste something you wrote yourself under My writing style. KAI builds a local style fingerprint, compares it with the current text and generates a personal writing prompt. Your sample is not stored or sent anywhere.
Does KAI remove AI watermarks?
KAI removes technical artifacts such as hidden Unicode, zero-width characters, unusual spaces, HTML and Markdown remnants, and tracking parameters. A statistical or token-based watermark is embedded in word choice itself; KAI therefore does not present its writing-style analysis as a guaranteed watermark remover or detector.
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