Fix any text you write on the web.
Sentence Checker is a Chrome extension that corrects grammar and spelling, explains every fix, rewrites in other styles and translates, right where you write. Grammar checks are free.
Your text
I has send the report yesterday, please check it when you has time.
Sentence Checker
I has send sent the report yesterday; please check it when you has have time.
“has send” → “sent”: the past tense of “send” is “sent”.
How it works
- Step 1
Select text on any page.
- Step 2
Right-click and choose “Check with Sentence Checker”, or press Alt+G.
- Step 3
Review the highlighted fixes and click “Replace on page”.
What you get
Fixes, with reasons
Grammar, spelling and punctuation in any language, every change highlighted and explained in one sentence.
Replace on page
Put the corrected text back into the e-mail, form or comment box you selected it from. Only your selection changes.
Eight styles
Rewrite in a formal, friendly, business, direct, legal, romantic or storytelling voice, or keep your own.
39 languages
Translate into 39 languages, in the style you pick, in one step. Write confidently outside your mother tongue.
Check while you type
Optional: a small button in the text field you are typing in shows the fixes next to it. One click applies them.
History and AI chat
Signed in, reopen recent checks and ask an AI assistant about wording, grammar or tone.
Free to start, fair to upgrade
Free: grammar checks up to 1,000 characters, 20 times a day, no account needed. Premium: all styles, translation, longer texts and unlimited checks. Cancel any time; 14-day money-back guarantee.
See pricingYour text stays yours
Text leaves your browser only when you ask for a check. It is not used to train models, and we keep it only as your own history when you are signed in. No ads, no selling data.
Privacy policyQuestions
Is Sentence Checker free?
Yes. Grammar, spelling and punctuation checks are free and need no account: up to 1,000 characters at a time, 20 checks a day. Premium adds rewriting in eight styles, translation into 39 languages, longer texts and unlimited checks.
How do I check text?
Select text on a page, right-click and choose "Check with Sentence Checker", or press Alt+G (Option+G on a Mac). The side panel shows every correction and why it was made. Click "Replace on page" to put the corrected text back where you selected it. You can also type or paste text into the panel.
Where does it work?
In ordinary text fields, comment boxes, forms and web mail such as Gmail. Google Docs draws its text itself, so a selection there does not reach the extension: copy the text, click "Paste and check" in the panel, then paste the result back.
Is my text stored?
Text is sent to our server only when you ask for a check, and is processed by OpenAI under terms that exclude training on it. We keep it only as your history when you are signed in, for up to 90 days, and you can delete that history at any time. The privacy policy has the details.