Proofreader AI Grammar Checker

Proofreader: Say What You Mean. Without The Mistakes.

Trusted by +1,000,000 people globally.

Write clearly and confidently with Proofreader, the AI-powered grammar checker and writing assistant. Designed to help you communicate better everywhere you type.

Fix grammar, improve clarity, rewrite awkward sentences, and detect AI-generated text in messages, emails, papers, and professional writing — without losing your voice.

Proofreader enhances your words instead of replacing them, so your writing still sounds like you, just clearer and more polished.

Write better in seconds
Check grammar, spelling, punctuation, sentence structure, and readability. Review corrections and clear explanations that help you improve your writing over time.

Check and improve writing in English, Spanish, French, German, Portuguese, and more.

Use the app interface in English, Spanish, French, German, or Hindi.

Sound natural & professional
Good writing is more than fixing mistakes. Proofreader helps your writing sound smoother, more natural, and easier to understand.

Proofreader helps you:
• Fix grammar mistakes
• Correct spelling errors
• Improve punctuation
• Make sentences clearer
• Refine tone and readability
• Choose better words
• Enhance writing flow and fluency
• Detect AI-generated text

Whether you want to sound more professional, academic, friendly, confident, or polished, Proofreader helps refine your writing while preserving your original tone and intent.

Rewrite without changing your voice
Proofreader's rewrite and paraphrasing tools help you reword text naturally while preserving your meaning. Refine the tone, improve clarity, or find another way to express your ideas.

Rewrite messages, emails, essays, captions, and documents in different styles and lengths:
• Polish
• Formal
• Casual
• Confident
• Engaging
• Academic
• Empathetic
• Creative
• Humorous
• Shorten
• Expand

Easy help for proper writing
Whether you're a native speaker or still learning, Proofreader helps you:
• Correct grammar instantly
• Improve sentence structure
• Learn proper punctuation
• Expand vocabulary
• Understand corrections with explanations
• Write more fluently and naturally

Choose from multiple English dialects:
• American English
• British English
• Australian English
• Canadian English
• New Zealand English
• South African English

Writing insights
Get a clear report on how your writing reads beyond individual corrections. See clarity, tone, readability, word and sentence counts, reading and speaking time, sentence length, and word variety.

Detect AI-generated text
Not sure if a piece of writing sounds too robotic? Proofreader's AI Detector analyzes your text and tells you how likely it is to be AI-generated, highlighting the passages that read as machine-written.

Use the AI Detector to:
• Check whether text reads as human or AI
• See a clear human / review / AI verdict
• Spot and highlight AI-sounding passages
• Edit flagged text to sound more natural and authentic

AI writing assistant
Features included:
• Grammar & Spell Checker
• AI Rewrite & Paraphrasing
• Vocabulary Enhancements
• Translator (100+ Languages)
• Dictionary & Definitions
• Text Reader
• Writing Explanations
• Style & Clarity Improvements

Privacy-first by design
Your writing stays private.

Proofreader does not store or share your writing or personal information. Everything is processed securely with privacy in mind.

Try Proofreader Pro
Get advanced writing tools, including:

• Unlimited rewriting
• Advanced writing styles
• Vocabulary enhancements
• Pro grammar corrections
• Professional writing tools
• AI Detection

Start your free trial today and experience faster, clearer, and more confident writing!