How to Check and Fix Grammar Online — Step-by-Step Guide

You don't need to study grammar rules — you need a tool that catches the mistakes you already make. Here's exactly how to check and fix your writing in seconds, with real examples of what gets caught.

Step 1: Copy Your Text

Grab the text you want to check from anywhere:

• Email draft (Gmail, Outlook, Apple Mail)
• Document (Google Docs, Word, Notion)
• Social media caption or post
• Cover letter, resume, or job application
• Essay, paper, or report
• Chat message you want to double-check before sending

Step 2: Paste Into Grammar Checker

Open Grammar Checker, paste your text, and click check. The AI scans for:

Category	What It Catches	Example Fix
Spelling	Misspelled words, typos	recieve → receive, definately → definitely
Punctuation	Missing/extra commas, apostrophes	its vs it's, their vs they're
Subject-verb	Singular/plural mismatch	The team are → The team is
Comma splice	Two sentences joined by comma only	I ran, I fell → I ran, and I fell
Run-on	Long sentences without proper breaks	Split into two clear sentences
Capitalization	Proper nouns, sentence starts	i went to new york → I went to New York
Phrasing	Awkward or wordy constructions	Due to the fact that → Because

Step 3: Review and Apply

Never blindly accept every suggestion. Grammar checkers are right ~95% of the time, but they make mistakes too:

• Proper nouns — the tool may not recognize specialized names or terminology in your field
• Intentional style — if you wrote a fragment on purpose for emphasis, keep it
• Context-dependent commas — the Oxford comma debate means the tool might add or remove commas you disagree with

Read through the suggestions, accept the clear fixes, skip anything that changes your intended meaning.

The 5 Most Common Mistakes (And How to Spot Them)

1. Its vs It's — "it's" = "it is." "Its" = possessive. If you can replace with "it is," use the apostrophe.
2. Their / They're / There — "they're" = "they are." "Their" = possessive. "There" = location.
3. Your / You're — "you're" = "you are." "Your" = possessive.
4. Comma splices — "I went to the store, I bought milk" needs a conjunction (and, but) or a period.
5. Affect vs Effect — "affect" is usually the verb, "effect" is usually the noun. "The rain affected the game." "The effect was significant."

Grammar Check Workflow by Use Case

Text Type	Check Grammar	Then Also...	Final Step
Email	Grammar checker	Read aloud once	Send
Essay/paper	Grammar checker	Readability check	Submit
Cover letter	Grammar checker	Tone check (professional)	Apply
Blog post	Grammar checker	Passive voice check + keyword density	Publish
Social caption	Grammar checker	Character count	Post