AI Text Rewriter & Tone Adjuster
Rephrase paragraphs, adjust reading level, or polish email tones locally in your browser using Chrome Gemini Nano.
Chrome Built-in AI Required
This tool requires Chrome's experimental **built-in on-device Rewriter API** (Gemini Nano) to rewrite text 100% locally.
- Open **Google Chrome** (version 127 or newer, Dev/Canary channel recommended).
- Navigate to
chrome://flags/#optimization-guide-on-device-modeland set to Enabled BypassPrefRequirement. - Navigate to
chrome://flags/#prompt-api-for-gemini-nanoand set to Enabled. - Relaunch Chrome.
- Navigate to
chrome://components, find **"Optimization Guide On Device Model"**, click **Check for update**, and wait for the model to download.
How to use this tool
100% Client-Side Polish
This rewriter executes entirely in browser memory. Your documents, business emails, or private messages are never sent to external servers or logged.
How to Rewrite Text Locally
Polish your paragraphs and tweak communication tones offline.
Enter Text
Input the sentences or paragraphs you would like to edit or rephrase.
Configure Tone & Length
Select the tone (Formal, Casual, Professional, Concise) and length (Shorter, Longer, or Same).
Generate Rewrite
Press Rewrite to execute the local Gemini Nano model and retrieve your polished copy.
Frequently Asked Questions
Understanding on-device rephrasing.
How is local rewriting different from online tools?
Online rewriting platforms upload your text to their servers, where it may be saved, analyzed, or used for model training. This local rewriter uses Chrome’s built-in window.ai.rewriter API, meaning your private drafts never leave your device.
Can I adjust the rewriting intensity?
Yes, Chrome’s Rewriter API allows specifying context/tone parameters. You can choose to make your text shorter, longer, more formal, or casual, which modifies the prompt parameters passed directly to the local model.
Privacy & Safety Policy
All tools run completely in your browser via client-side JavaScript. We do not upload your files, interest parameters, or JSON payloads to any server. Your data remains yours.