Grammar, Punctuation & Spelling Checker
Check English writing for common grammar, punctuation, spelling, capitalization, repetition, and readability issues without sending the text away.
LOCAL TOOL: Your writing stays in this browser. The checker is rule-based and is designed to catch common problems, not to replace a professional editor or claim perfect grammar detection.
A useful writing checker should explain the problem, not silently rewrite your work.
This tool looks for common spelling mistakes, repeated words, spacing and punctuation problems, capitalization issues, unmatched punctuation, several frequent grammar patterns, and sentences that may be difficult to read. Every listed issue includes a reason so you can decide whether a suggestion actually fits your sentence.
Two layers help with spelling while keeping the tool private.
WhateverTools detects a built-in list of frequent English misspellings and offers direct fixes. The text box also enables your browser's native spell checker, which can underline additional dictionary words and usually provides suggestions through the browser's context menu. No writing is sent to an AI or grammar API.