A free, private French & English grammar checker for Chrome

Correcteur Libre checks spelling, grammar, conjugation, French typography and style everywhere you write in Chrome. No account, no character limit, and your text never leaves your computer.

Coming soon to the Chrome Web StorePrivacy policy

Everywhere you write

Live underlines in Gmail, Outlook, LinkedIn, WhatsApp Web, Slack, Teams, Notion, Jira, WordPress, ChatGPT and most text fields; Google Docs, Sheets and Slides from the side panel; Canva, Figma and any canvas app through selection (Alt+Shift+C) or clipboard (Alt+Shift+V).

Private by design

Proofreading runs locally with Grammalecte (French) and Harper (English). No server, no telemetry. Privacy policy.

FAQ

Is there a free grammar checker for Chrome that supports French?

Yes. Correcteur Libre is a free Chrome extension that checks spelling, grammar and style in French and English on every website, with no account and no character limit.

Does it send my text to a server?

No. The proofreading engines (Grammalecte for French, Harper for English) run inside the extension on your computer. With default settings it makes no network requests.

Does it work in Gmail, LinkedIn, Google Docs and Sheets?

Yes. It underlines mistakes live in Gmail, LinkedIn, WhatsApp Web, Slack, Notion and most text fields, and checks Google Docs, Sheets and Slides from its side panel.