5.0 on the Chrome Web Store

Fix grammar
anywhere you type.

Select text in any text box, right-click, and the corrected version replaces it in place.

Add to Chrome View on GitHub

Works in Chrome, Edge and Brave · Open source

Works where you already write

  • Gmail
  • Outlook
  • Slack
  • LinkedIn
  • Facebook
  • Messenger
  • and any ordinary text box

How it works

How does MrGrammar work?

You never leave the page. Highlight what you wrote, click once, and the fix shows up right where you were typing.

  1. 1

    Select the text

    Highlight a sentence, a paragraph or the whole message in any text box.

  2. 2

    Right-click, or press the shortcut

    Choose Fix Grammar with AI, or press CtrlShiftE (⌘⇧E on Mac).

  3. 3

    Done, in about a second

    A small pill shows while it works, then the corrected text replaces your selection.

What gets fixed

What gets fixed,
and what stays yours?

Spelling, grammar and punctuation are fixed. Word choice, tone and style stay exactly as you wrote them.

Before

Their going to the meeting tommorow, i think we should of sent the agenda earlier so everyone have time to prepare. Can you share the deck when its ready?

After

They're going to the meeting tomorrow. I think we should have sent the agenda earlier so everyone has time to prepare. Can you share the deck when it's ready?

Why I made this

It kept rewriting me.

I built MrGrammar because every AI tool I tried kept rewriting me. I would paste a sentence into ChatGPT, Gemini or Claude to fix a typo, and get back something polished, formal and not mine. It just didn't sound like me anymore.

All I wanted was the typo fixed.

So I made a tool that does only that. MrGrammar corrects spelling, grammar and punctuation, and leaves your words, your tone and your sentence structure exactly as you wrote them. If it sounded like you before, it sounds like you after.

Saleep Shrestha Saleep ShresthaMaker of MrGrammar
You wrote

hey can u send me the file when u get a sec, no rush tho

A typical AI rewrite

Hello, could you please send me the file at your earliest convenience? There is no rush.

Polite. Formal. Not you.
MrGrammar

Hey, can you send me the file when you get a sec? No rush though.

Same message. Just fixed.

Features

Why MrGrammar?

Free to use

Install it and start fixing right away.

About a second

Corrections come back fast enough that you stay in flow. Select, fix, keep writing.

Private by design

Text leaves your browser only when you ask for a correction, and it is never stored. No accounts, no cookies, no analytics.

Read the privacy policy →

Any text box

Ready the moment Gmail, Outlook, Slack, LinkedIn, Facebook or Messenger loads. On every other site it only touches the page when you call it.

Keyboard first

One shortcut, no menu needed. Change it any time from the extension settings.

Open source

MIT licensed and on GitHub. Read the code, file a bug, or suggest what to build next.

Saleep24/MrGrammar →

Reviews

Loved by people who write all day.

Rated 5.0 out of 5 on the Chrome Web Store.

Wow! This extension helped me edit my emails and make my sentences smoother. It's pretty easy to install and set up a shortcut to make editing even faster in Gmail and Slack.
Brenda GarciaChrome Web Store
It's fast. It's clean. It's ridiculously smart. The suggestions are natural and non-intrusive, and it doesn't mess with your tone or overcorrect like some other tools do. If you write anything, emails, essays, social posts, install this.
AbiralChrome Web Store
Changed my life! I cannot even imagine my life without this tool now.
Mandip AdhikariChrome Web Store

Read all reviews on the Chrome Web Store →

FAQ

Frequently asked questions

Is it really free?

Yes. There is no plan to upgrade to and no key to bring. The free service allows 10 corrections a minute and 200 a day per person, which is plenty for a day of email and chat.

What does it change, and what does it leave alone?

It fixes spelling, grammar and punctuation. It does not rewrite your sentences, swap your words or change your tone.

Where does it work?

Gmail, Outlook on the web, Slack, LinkedIn messages and comments, Facebook and Messenger are supported out of the box, plus most websites with ordinary text boxes, comment fields or editors. It runs in Chrome, Edge, Brave and other Chromium browsers.

How is MrGrammar different from other grammar tools?

It only corrects. Most AI writing tools rewrite your sentence, change the tone or suggest a different word. MrGrammar fixes the spelling, grammar and punctuation and leaves everything else as you wrote it. It is also free, needs no account, and puts the fix straight into the text box you are typing in.

Is MrGrammar an AI grammar checker?

Yes. Corrections come from Google Gemini, with Groq as a backup, through a small server the project runs. The extension holds no keys and you do not need your own.

Does it work in Google Docs?

Not yet. Docs draws its text on a canvas rather than as regular page text, so there is nothing for the extension to read. You will see a short message if you try.

What happens to my text?

Nothing leaves your browser until you ask for a correction. At that moment the selected text goes over an encrypted connection to a small server, which asks Google Gemini for the correction, with Groq as a backup. Your text is never stored or logged. The server only keeps a request count per network address for up to 24 hours to enforce the free limit, and that count is never linked to any text. Full privacy policy.

Can I change the keyboard shortcut?

Yes. Open the extension popup and choose Change, or go to chrome://extensions/shortcuts and set any combination you like.

Something did not work. Where do I report it?

Open an issue on GitHub. Bug reports and feature ideas are both welcome.

Get MrGrammar

Write with confidence.
Everywhere.

Installs in seconds. Works in the next text box you open.

Add to Chrome, it's free