Grammar Checker
Catch spelling, spacing, punctuation and common grammar slips.
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About the Grammar Checker
Catch the mechanical mistakes that slip past a quick read: repeated words, double spaces, space before punctuation, missing capitals, “a/an” misuse, “should of”, common misspellings and word confusions like its/it's. The Toolcenter Grammar Checker runs a rule engine locally and can apply the safe fixes in one click.
How to use it
- 1Paste your writing into the box.
- 2Review the list of detected issues by category.
- 3Read each suggestion and its before/after.
- 4Click “Fix all safe issues” or edit manually.
Key features
- Spelling, spacing, punctuation and capitalisation checks
- a/an, should-of and its/it's heuristics
- One-click safe auto-fix
- Issue count and category breakdown
- Private — text never leaves your browser
Frequently asked questions
Is this a full grammar engine?+
No. It checks mechanics and common slips with rules. It will not do deep syntactic analysis like a large cloud service, but it is instant and private.
Will auto-fix ever break my text?+
It only applies changes with a clear single correction (spacing, obvious typos, capitalisation). Ambiguous items are listed but not auto-changed.
Does it support languages other than English?+
The rules target English. Other languages will get spacing and punctuation checks only.
Is my writing uploaded?+
No. The checker runs entirely on your device.
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