Free Punctuation Checker

The Ultimate Punctuation Corrector & Checker

Punctuation is the traffic signal of language. It tells readers when to pause, stop, or emphasize a point. A single missing comma can completely change the meaning of a sentence. For example, "Let's eat grandma!" suggests cannibalism, while "Let's eat, grandma!" is an invitation to dinner. Our Free Punctuation Checker ensures your writing is structurally sound, clear, and communicates exactly what you intend.

Common Punctuation Mistakes We Fix

Our AI-powered tool detects a wide range of errors:

• Comma Splices: Joining two independent clauses with just a comma. (e.g., "It's raining, we should stay inside.")
• Run-on Sentences: Sentences that drag on without proper breaks.
• Missing Apostrophes: Confusing "its" with "it's" or forgetting possession marks (e.g., "dogs bone" vs "dog's bone").
• Capitalization Errors: Lowercase starting letters or improper nouns.
• Double Spacing: Accidentally hitting the spacebar twice between sentences.

Punctuation Rules Guide

Here is a quick refresher on the most important marks:

Mark	Symbol	Usage
Period	.	Ends a complete sentence.
Comma	,	Separates items in a list or pauses in a sentence.
Semicolon	;	Links closely related independent clauses.
Colon	:	Introduces a list, quote, or explanation.
Apostrophe	'	Shows possession (John's car) or contraction (don't).

Impact on SEO & Professionalism

Search engines like Google prioritize high-quality content. Poor grammar and punctuation signals low quality, which can hurt your rankings. In the professional world, an email full of typos can cost you a client or a job opportunity. Using a tool like this is a small step that yields big returns in credibility.

Manual vs. AI Checking

Why not just proofread yourself? The human brain uses "predictive reading," often filling in missing commas or correcting errors automatically in your head. An AI tool is objective and catches what you miss.

Frequently Asked Questions (FAQ)