About Grammar Checker
Run a grammar check on your writing before it goes out: a job application, an email to a client, a thesis chapter or a post for your company blog. It corrects grammar, spelling and punctuation, and it tells you why each change was made, so you learn the rule instead of just accepting a fix. Text on paper or in a screenshot can be copied out first with Image to Text (OCR).
English spelling differs across the Atlantic, so under More options you can set English variant to American or British, or leave it on Auto. Paste your text, run the check and go through the explained changes. The AI can still misjudge technical terms, names or a deliberate style choice, so accept only the changes that make sense to you.
How to use Grammar Checker
- 1Paste your text
Type or paste the English text you want to check.
- 2Set the English variant
Optional. Under More options, choose American or British, or leave it on Auto.
- 3Run the grammar checker
Start the check. Corrections come back with a short reason for each.
- 4Review each change
Read the explanations and keep the fixes you agree with.
Why use Cubfile for this
- Grammar, spelling and punctuation
One pass looks at verb forms, agreement, typos, commas and more.
- A reason for every change
Each correction is explained, so you see what was wrong and why.
- American or British English
Choose which spelling to follow, like color or colour.
- Private checking
Your text is checked in an isolated task and removed automatically one hour later.