Commas cause more trouble than most marks because spacing and usage interact.
Comma Checker focuses on comma spacing and common usage, with a usage check you can toggle.
How to use Comma Checker
- Paste your text to check its commas.
- Keep the comma spacing and usage checks on.
- Review the comma fixes and apply the ones you want.
Use cases
- Fixing spacing around commas.
- Adding a comma after an introductory word.
- Tidying comma usage before sharing.
Good to know
Comma Checker flags comma spacing problems, such as a space before a comma or a missing space after one, and common usage cases like a comma after an introductory word. Comma style varies between guides, so it does not enforce the serial comma and cannot catch every comma splice. Treat the usage flags as suggestions that follow a common convention.
Frequently asked questions
Does it enforce the serial (Oxford) comma?
No. Serial-comma use is a style choice, so it is left to you rather than flagged either way.
Can it catch every comma splice?
No. It catches common comma spacing and usage cases with rules, but subtle comma splices need a human read.
What usage cases does it check?
Mainly spacing around commas and adding a comma after common introductory words, which follow a widely used convention.
Will applying comma fixes change my style?
It applies common-convention fixes, so review them if you follow a specific style guide.