Grammarly for Firefox

Finish work faster. With the Grammarly for Firefox browser extension, you’ll get industry-leading AI writing assistance whenever and wherever you work online.
Install Grammarly on Firefox
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Improve your writing across the web, from email to social media and beyond.
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Instantly create drafts, replies, and rewrites with generative AI.
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Save time on proofreading and perfecting your words.
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Install and start getting writing assistance in seconds.

Works Where You Do

Grammarly's browser extension works in 500,000+ apps and programs to help improve
your writing without breaking focus or toggling tabs.
Google Docs

Great Writing Made Simple

From grammar and spelling to style and tone, Grammarly makes it easy to eliminate errors and find
the perfect words to express yourself.

Proofread with ease

Know your writing is at its best. Grammarly helps you correct commas, commonly confused words, and more in just a few clicks.
Grammarly corrects your spelling and grammar
Grammarly's tone detector makes sure you nail your tone every time.

Make the right impression

The right wording matters. Grammarly’s tone detector lets you know how your writing comes across so you can ensure it lands as intended.

Effortlessly express ideas

Get your points across clearly. Grammarly eliminates unnecessary words and cleans up complicated phrases so your message is easy to understand.
Grammarly offers rephrasing suggestions.
Grammarly Premium suggests changing the adjective in your text.

Find the perfect words

Got something on the tip of your tongue? Grammarly recommends vocabulary improvements to help you say precisely what you mean.

Grammarly allows me to get those communications out and feel confident that I’m putting my best foot forward. Grammarly is like a little superpower, especially when I need to be at 110%.

Jeanette Stock
Co-founder of Venture Out
New York TimesWSJUSA TodayTechCrunchForbes

Get More Done with Grammarly

Join the 30 million people and 70,000+ teams using Grammarly
to write more quickly and clearly every day.