What is Punctuation Checker?
Punctuation mistakes are easy to miss but make writing look sloppy. Doubled periods, mixed Chinese/English punctuation, missing spaces after commas — these small errors hurt credibility. Our checker scans your text for 20+ common punctuation issues including: repeated marks, Chinese/English punctuation mixing, spacing errors, mismatched quotes and brackets. Fix them all with one click.
Use Cases
- ◆Academic paper punctuation proofing
- ◆Business document format checking
- ◆Publishing content review
- ◆Student homework punctuation check
- ◆Translation document punctuation consistency
How to Use
- 1Paste the text you want to check
- 2See highlighted punctuation errors
- 3Click "Fix All" to automatically correct issues
- 4Copy the cleaned-up text
Features
- ✓Detects 20+ punctuation errors
- ✓Highlights issues
- ✓One-click fix
- ✓Chinese/English mixed detection
- ✓Real-time scanning
- ✓Browser-local processing
- ✓Free to use
- ✓No signup needed
FAQ
Can it detect mixed Chinese/English punctuation?
Yes. The tool automatically identifies and suggests fixes for mixed Chinese and English punctuation.
Will fixing change the meaning?
No. Only punctuation formatting is corrected — no text content is modified.
What types of punctuation errors are detected?
Repeated marks, Chinese/English mixing, spacing issues, mismatched quotes/brackets, full-width/half-width mixing, and 20+ more types.
Is this tool free?
Yes — completely free. No accounts, no paywalls. Just open the page and go.
Does my data get sent to a server?
No. Everything runs in your browser. Your data never leaves your device.
Does it work on my phone?
Absolutely. Works great on phones, tablets, and desktops alike.