Grammar & Style Checker
Paste your text and click Check. This tool highlights common style issues and explains each rule.
Educational Tool
This is a rule-based style checker, not an AI grammar engine. It flags common patterns and explains the writing principles behind each suggestion.
Grammar Rules Explained
Double Spaces
Using two spaces after a period is a habit from typewriter days. Modern style guides (APA, Chicago, MLA) recommend a single space after punctuation. Double spaces can cause formatting issues in digital documents.
Repeated Words
When the same word appears twice in a row (e.g., "the the"), it is almost always a typo. Your spell checker may not catch this because both instances are valid words individually.
Very Long Sentences (30+ words)
Sentences exceeding 30 words are often hard to follow. Try breaking them into shorter sentences. This improves readability scores and helps readers process your ideas one at a time.
Passive Voice Indicators
Passive voice uses forms of "to be" plus a past participle (e.g., "was written," "is being done"). Active voice is generally stronger and clearer: "She wrote the report" instead of "The report was written by her."
Their / There / They're
Their = belonging to them ("their car"). There = a place or introducing a sentence ("over there," "there is"). They're = they are ("they're going"). This checker flags all three for your review.
Your / You're
Your = belonging to you ("your book"). You're = you are ("you're right"). This is one of the most common mix-ups in English writing.