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Grammar Checker Online

Rule based text check: doubled words, missing spaces after commas or periods, duplicate punctuation, lowercase sentence starts, unbalanced brackets, long sentences and common typos — DE and EN.

Characters / words0 / 0
Sentences0
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Errors / warnings / style0 / 0 / 0
Different rules triggered0

Findings (text position in order)

Rules triggered

This is a basic rule check, not an AI grammar checker. It finds mechanical errors that can be detected with rules: doubled words, wrong spacing, duplicated punctuation, lowercase sentence starts, unbalanced brackets, over-long sentences and a built-in list of common typos. It cannot judge context: confusion pairs such as das/dass, seit/seid or their/there are deliberately not flagged, because a rule cannot decide them reliably. For a deeper check use a full grammar service such as LanguageTool.

What This Grammar Checker Does — and What It Does Not

This grammar checker works with rules, not with a language model. It scans your text for mechanical mistakes that can be detected reliably: a word repeated twice in a row, two spaces instead of one, a missing space after a comma or a period, duplicated punctuation such as !! or ,, (while ?! and ... are left alone), a space before a punctuation mark, a lowercase sentence start, unbalanced brackets or quotation marks, sentences longer than the limit you set, and a built-in list of common typos for English and German. Every finding shows line and column, a short explanation and, if the fix is unambiguous, a suggestion. Confusion pairs such as das/dass or their/there are deliberately not reported: a rule cannot decide them without understanding the sentence. For a full grammar check, use a service such as LanguageTool.

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