Real-time grammar, spelling, and clarity suggestions across Gmail, Docs, Notion, and every other writing surface. Free and Premium tiers.
Editor's Verdict
Grammarly is the most widely used writing assistant extension, and for good reason. The free tier catches the vast majority of grammar and spelling errors across every website. Premium adds style suggestions, tone analysis, and plagiarism checking. For most writers and marketers, the free version is sufficient for day-to-day work.
Overall
4.6 / 5
Pricing
Freemium
Install Grammarly
Official extension — always install from the verified source
Yes. The free Grammarly extension checks grammar, spelling, and basic punctuation across all websites. Premium ($12/month) adds clarity, tone, and style suggestions, plus a plagiarism checker. Most users get significant value from the free version.
Yes, Grammarly has a dedicated Google Docs integration. Enable it in Grammarly's settings. It works within Docs similar to how it works on other platforms — underlines issues and shows suggestions in a sidebar.