Grammar Checker

The Grammar Checker finds grammar, spelling, punctuation and clarity mistakes in your text and underlines each one in colour – blue for grammar, green for spelling and orange for clarity. Click a phrase to see why it is wrong and accept the fix in one click.

Grammar Checker

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Grammar Checker – free online grammar checker by PDF SEO Tools

Write Clear, Error-Free Text in Seconds

Check grammar, spelling, punctuation and clarity free in 30+ languages. Click coloured phrases for fixes, accept or correct all errors in one click. The Grammar Checker finds grammar, spelling, punctuation and clarity mistakes in your text and underlines each one in colour – blue for grammar, green for spelling and orange for clarity. Click a phrase to see why it is wrong and accept the fix in one click.

People rely on the Grammar Checker for grammar, spelling, punctuation and clarity checks, colour-coded phrases with clear explanations, accept, dismiss or choose between several suggestions and correct All errors in one click. Everything happens in your browser, so there is nothing to download, nothing to set up and no account to create – you get a clean result in seconds and can get back to your work.

How the Grammar Checker Works

Step 1: Type, paste or upload your text.
Step 2: Choose the language and press Check Grammar.
Step 3: Click the coloured phrases and review each suggestion.
Step 4: Accept the fixes or press Correct All, then copy the text.

Grammar Checker – Step 1: Type, paste or upload your text — Animation – Step 1: Type, paste or upload your text

Grammar Checker – Step 2: Choose the language and press Check Grammar — Animation – Step 2: Choose the language and press Check Grammar

Why People Choose Our Grammar Checker

No account required Open the page and start immediately – no registration, no email address and no trial period.
Encrypted HTTPS connection Everything you send travels over a secure, encrypted connection.
Nothing is published or shared The data you enter is used only to show your result. It is never published, sold or shared.
Works on every device The layout adapts to phones, tablets and desktops, and runs in Chrome, Safari, Firefox and Edge.
Free with no hidden limits Use it as often as you need for everyday tasks – no watermark and no surprise charges.
AI with automatic fallback Several AI providers keep the Grammar Checker fast and reliable.
Upload documents Fill the text box from TXT, PDF or Word files.

Grammar Checker – Step 3: Click the coloured phrases and review each suggestion — Animation – Step 3: Click the coloured phrases and review each suggestion

Grammar Checker – Step 4: Accept the fixes or press Correct All, then copy the text — Animation – Step 4: Accept the fixes or press Correct All, then copy the text

Key Features of the Grammar Checker

Grammar, spelling, punctuation and clarity checks Grammar, spelling, punctuation and clarity checks – free and works on phone and computer.
Colour-coded phrases with clear explanations Colour-coded phrases with clear explanations – free and works on phone and computer.
Accept, dismiss or choose between several suggestions Accept, dismiss or choose between several suggestions – free and works on phone and computer.
Correct All errors in one click Correct All errors in one click – free and works on phone and computer.
30+ languages including English US/UK 30+ languages including English US/UK – free and works on phone and computer.
Deep Grammar Check with AI proofreading Deep Grammar Check with AI proofreading – free and works on phone and computer.

Grammar Checker: Frequently Asked Questions

Is the Grammar Checker free?

Yes – check up to 5,000 words at a time with no sign-up.

Which languages are supported?

More than 30, including English (US/UK), Spanish, French, German, Portuguese, Russian, Dutch, Polish and Ukrainian.

What is the Deep Grammar Check?

It applies stricter style and clarity rules and adds an AI proofread for mistakes simple checkers miss.

Is the Grammar Checker safe and private?

Yes. Everything travels over a secure HTTPS connection, and the data you enter is used only to show your result – it is never published or sold. You do not need an account, and the tool works the same way on phones, tablets and computers.