Writetone: AI Writing Assistant & Grammar Fix
Chrome extension and web app to rephrase, fix grammar, humanize, summarize, and generate replies with adjustable tones.


What it does
Permissions and access
Taken from the extension's own manifest file inside the package. The store listing does not spell this out, so it is worth reading before you install.
| Permission | What it allows |
|---|---|
activeTab | Access the current tab when you click the extension |
cookies | Read and change cookies for the sites it runs on |
scripting | Run its own code on pages |
storage | Store its own settings and data |
Requests 4 permissions — extensions doing the same job average 5.7.
Technical details
Description
Writetone is an AI-powered writing assistant that helps you rephrase text, fix grammar, humanize AI-generated content, summarize documents, draft original content, and generate replies. It is available as a Chrome extension and on the Writetone website (https://writetone.com). The tool is designed to help you write naturally by adjusting the tone, vocabulary, and style to suit any situation. It supports over 50 languages across all features, making it accessible to a global audience.
Key Features
- Inline Text Rephrasing: While browsing any webpage, you can select text and instantly rephrase it using the extension's inline toolbar. This is useful when you want to improve clarity, adjust tone, or avoid repetition without leaving the page.
- 10+ Writing Tones: Choose from tones like Simple, Normal, Formal, Informal, Casual, and more. This helps you match your writing style to the context, whether you're drafting a professional email, a friendly message, or a persuasive article.
- Grammar Fix: The inline toolbar also includes a grammar checker that identifies and corrects errors in your selected text. This is particularly helpful for non-native speakers or anyone who wants to ensure error-free writing quickly.
- 3 Humanize Modes: The HumanGPT feature offers three levels of humanization (Subtle, Human, CEO) to make AI-generated text sound naturally written. Subtle adds minor adjustments, Human provides a natural flow, and CEO makes the text sound authoritative. This is ideal for users who need to pass AI detection or want their content to feel more authentic.
- Reply Generator: When you select a message on social media, email, or forums, the extension can generate a contextual reply in 8 tones: Normal, Positive, Disagree, Question, Answer, Motivate, Thankful, and Funny. This saves time and helps you respond appropriately in various scenarios.
- AI Writer: You can provide a prompt and the AI will generate text in a natural human tone. This is useful for drafting blog posts, articles, or creative content from scratch.
- Summarizer: Paste or select long text, and the tool will create a concise summary. This is handy for quickly grasping the main points of articles, reports, or documents.
On the Writetone website, additional tools are available: over 30 specialized AI writing tools (e.g., for emails, essays, social media), an AI Tutor for learning any subject, a multi-language HumanGPT humanizer, text-to-speech and speech-to-text, a Co-Writer for collaborative drafting, and a Use Cases generator for tailored content. The Chrome extension integrates these capabilities directly into your browser, allowing you to improve your writing on any website without switching tabs. Whether you're a student, professional, or casual writer, Writetone provides practical features to enhance your writing efficiency and quality.
Extensions that do the same job
Matched by what these extensions actually do, not by store category, and sorted so the ones asking for the least access come first.
| Extension | Site access | Permissions | Users | Rating |
|---|---|---|---|---|
| Writetone: AI Writing Assistant & Grammar Fix — this page | Limited | 4 | 1K | 4.8★ |
| AI Chrome Extension powered by ChatGPT - Magictool AI | All sites | 3 | 9K | 4.8★ |
| ParagraphAI | All sites | 6 | 20K | 4.4★ |
| Fathom AI Note Taker for Google Meet | Limited | 4 | 500K | 4.9★ |
| NoteGPT: YouTube Summary, Chat with AI Assistant, ChatGPT DeepSeek Claude | Limited | 3 | 400K | 4.9★ |
| AI Code Finder, Alerts, Ask Questions about Papers: CatalyzeX | Limited | 3 | 50K | 4.8★ |
| Ghostwrite: ChatGPT Email Assistant | Limited | 3 | 20K | 4.0★ |
Store data last checked August 14, 2026.