Now Writer can read the web for you. 

Free Online Punctuation Checker

Use Writer’s free online editor to correct errors in
punctuation, grammar, spelling, and more.

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A free punctuation check to help you write better

Use our leading punctuation checker to make sure your writing is the best it can be. Check punctuation, grammar, spelling, vocabulary, and other writing mistakes. Our advanced writing assistant, powered by artificial intelligence, thoroughly scans your text to make sure your content is well-written, error-free, and uses correct punctuation marks. Writer’s online punctuation checker is the top writing tool for students, teachers, professionals, companies, and writers.


The free punctuation checker
trusted by leading brands

  • Intuit
  • Braintree
  • Twitter
  • Marriott
  • CoverMyMeds
  • SimplePractice
  • Rogers
  • Zoom+
  • City and County of San Francisco
  • Discovery
  • UiPath
Go beyond standard grammar checks

Go beyond standard grammar checks

Be sure your copy is free of common and not-so-common English grammar errors.

Perfect spelling and punctuation

Em-dashes are not scary, but a missing comma is. Nail both with Writer.

Perfect spelling and punctuation
Tone, voice, and style

Tone, voice, and style

Writer was built for writing at work, where clear and concise writing is critical. Communicate crisply with Writer.

Word choice and terminology

Whether you are trying to connect with your audience or follow guidelines at work, always choose the right word with Writer.

Word choice and terminology

Frequently asked questions

  • How does the Writer punctuation checker work?

    Do you ever confuse the difference between em dashes, en dashes, and hyphens?

    Unsure whether to use a semicolon or a comma? If you answered yes to either question, Writer’s punctuation checker is the tool for you.

    Our punctuation tool makes sure that you’re using correct punctuation, such as periods, commas, colons, semicolons, quotation marks, apostrophes, and dashes. Writer’s proprietary AI ensures that your writing uses consistent punctuation and sentence structure.

  • Why use Writer’s punctuation checker?

    Clear, well-written content is more important than ever before. In today’s competitive world, quality writing is often the difference between getting the top grade, the best performance review, or the most-read website content.

    Writer’s punctuation checker helps you get ahead in work, school, and life by ensuring that you’re communicating effectively. Using incorrect punctuation could cause your reader to become confused or worse yet, frown upon your writing. With the Writer punctuation checker, you can be confident that your writing uses correct punctuation in addition to correct spelling and grammar.

  • How do I check for punctuation in Google Docs?

    With so many students, schools, and companies using Google Docs to create reports and documents, we developed Writer’s technology with Google Docs top of mind. Sign up for a free trial of Writer and install the Google Docs add-on, making it super easy to check for grammar and punctuation errors right in the Google Doc.

  • Who uses Writer’s punctuation checker?

    Everyone and their sister can use the Writer punctuation checker. Writer is the preferred tool among professionals, and leading brands like Twitter and Intuit. Writer’s punctuation checker is also used by students, universities, professors, and professional writers for proofreading their content.

  • Why is Writer the preferred Grammarly alternative for professional users?

    Professional users need an AI writing assistant that provides consistently excellent corrections and suggestions everywhere they write online. Writer achieves that for professional writers by providing the following features:

    • Grammar AI that understands some rules are meant to be broken: You have a style and we get that. Not all grammar rules are meant to be followed. Writer’s false-flag rate is lower than any other tool, because the underlying machine learning models are trained on data from people writing at work — not students or people just starting to learn English.
    • Brand voice guidelines: Customize Writer’s voice suggestions to suit you. Are you formal, but approachable? Or friendly and casual? Make sure everything you write is aligned with your brand voice preferences.
    • Customizable content styleguide: Your editorial guidelines should be your own. From date formats to punctuation use to capitalization preferences, select your own, and then share them with a team. Writer is the most customizable writing assistant available, and the choice of professional writers.

Punctuation checker


What does our free punctuation checker do?

Our free punctuation checker proofreads your text to make sure it's clear, consistent, and error-free. We automatically catch everything from typos to nuanced grammatical errors and vocabulary improvements. And punctuation mistakes, too, of course.


Is there a
checking app?

Yes! When you sign up for Writer, you’ll get access to a powerful and easy-to-use web app and extensions like a plagiarism checker, styleguide builder, tone detector, and more.

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Punctuation checking

Sentence structure


Does Writer
correct sentence

Yep. This isn’t just a spellchecker – it’s a writing tool powered by AI. We’ll catch more nuanced errors that improve the style of your writing. From punctuation to vocabulary, your content is improved with Writer.


Who is Writer for?

Writer is great for anyone who wants to get their point across in writing. Our tools are trusted by copywriters, UX writers, marketers, product teams, and more.

Drafting an important email? Run it through Writer to catch mistakes. Putting together a marketing page for a product? Let Writer analyze it for voice and tone to make sure it’s on brand and persuasive.

Punctuation checkers


Take Writer with you everywhere you write.

Get the Chrome extension

Take Writer with you everywhere you write